Connect with us

Technology

Laptop buying guide: what to look for in 2024

Published

on

Laptop buying guide: what to look for in 2024

Whether you’re loyal to Windows, a Mac fan, or willing to try something new, you should know what to look for in a laptop before making an investment. There’s more to consider than just the operating system. Does it have the screen you want? Are there ports that support your peripherals? Can it play games at 1080p or higher? These are among the many considerations of which you need to be aware.

In this guide, we explain what you should look for in 2024, and what you need to avoid. Many options are available in terms of both Windows 11 and Chrome OS, whereas Apple limits its MacBooks to a lower number of configurations. Continue reading to find out which laptop is right for you and which are the overall best laptops, and be sure to check out our list of best laptop brands before you get started.

Mac, Windows, or something else?

The operating system should be your first major consideration. While that debate was once dominated by Apple’s macOS and Microsoft’s Windows, Google’s Chrome OS is now a very popular alternative typically offered on much more affordable laptops.

While there are certainly comparable hardware and features offered with these platforms, there are some stark differences between them that are important to consider.

Advertisement

Windows

Dell XPS 16 front angled view showing display and keyboard.
Dell XPS 16 Mark Coppock / Digital Trends

Windows-based PCs are an incredibly diverse category. Dozens of manufacturers make them, and the quality and pricing can vary greatly depending on which model and brand you choose. The fastest models will surpass Macs in terms of performance, and many companies tailor their Windows PCs to a specific purpose, such as gaming or business.

Windows PCs come in a variety of shapes and sizes. A standard laptop with a clamshell design and a keyboard-mouse interface is easy to find, such as the lightweight Surface Laptop line. Windows touchscreen laptops can be found even in the lower price brackets, which is not something you’ll see on any Apple MacBook — unless you count a brief fling with the Touch Bar.

More elaborate designs include fold-back screens or even detachable tablet-keyboard combos, such as Microsoft’s Surface range. Meanwhile, Apple reserves the 2-in-1 design for its iPad Pro family combined with a Magic Keyboard, as you won’t see a convertible or detachable MacBook.

On the software side, Windows is far more open-ended than macOS. It’s the standard for game development and many business-related programs, empowering a larger software library. Windows enjoys major updates with new features more frequently, too: Biannually versus annually as with Apple’s macOS. Note that Chrome OS has a less rigid update schedule and is more likely to get smaller updates more often.

Unlike Apple’s more limited hardware lineup, there is plenty of choice in the Windows laptop space. Whether you opt for a major manufacturer like Lenovo, Dell, or one of Microsoft’s own devices, you have a ton of options.

Advertisement

MacOS

The 14-inch MacBook Pro on a window sill.

Apple has always been protective of its brand, releasing products in very deliberate iterations. Any Apple product will follow its standards, whereas any manufacturer can make a Windows or Chrome OS-based PC with unique specs. As a result, Macs are very user-friendly and stable. And because they come from the same ecosystem, Apple’s resourceful support network can easily help with any problems that arise.

Quality design is one of the hallmarks of a Mac. They are built to look great, feel elegant, and have incredible displays, which translates to a much higher price tag than many of their Windows and Chrome OS counterparts, especially when configured with lots of storage. Apple computers aren’t known for being cheap.

Macs use fast hardware but rarely sport the most powerful graphics chips as seen in Windows-based PCs — and unlike many PCs, it is impossible to upgrade components, so you are stuck with the specs that you purchase on day one. Still, those who want a solid computer but do not know a lot about hardware can rest easy knowing their Mac will perform well during everyday use. Apple’s hardware also advanced significantly since late 2020, when the company switched processors to their own in-house chips. The M3 series is an incredibly fast chipset that significantly improved GPU performance, and the M4 is right around the corner. ThePro and Max versions are powerful tools for creators, with machines like the MacBook Pro with the M3 Max offering blistering performance and surprisingly awesome efficiency. Today, the MacBook Pro offers the best combination of high speed and battery life you can buy.

Apple’s strict design standards extend to the operating system, macOS, which is straightforward and intuitive. Unlike Windows, the platform includes a suite of proprietary office and media-editing software, and each application is well-suited for its targeted task. It’s no surprise Apple is often the choice of designers and photographers (although models like Microsoft’s Studio Laptop Studio 2 are putting up serious competition thanks to innovative designs and digital pen support).

Finally, while there are no touchscreens on Macs, you can use Apple’s Sidecar mode to add an iPad as a second wireless screen with touch support.

Advertisement

Chrome OS

Mark Coppock / Digital Trends

Google’s Chrome OS is different from Windows and macOS. Based on the Chrome browser, this platform initially focused on web-based apps and affordability. While the latter still holds true, Chrome OS has evolved over the years to support more traditional desktop software and mobile apps, similar to its rivals.

Chrome OS powers Chromebooks. These devices are typically more affordable than Windows-based PCs and MacBooks due to their lower hardware requirements. In the past, they were mostly ideal for schools and other institutions, but today, users can do more than just browse social media and make online purchases. Chromebooks can now be used for a lot more, and they’re being increasingly used by businesses seeking a secure and easy to manage platform.

Hardware choices are also much more varied than in the past, with powerful offerings, like the HP Dragonfly Pro Chromebook, that perform and look very much like premium Windows and macOS laptops. There are even 2-in-1 options like the HP Chromebook x360 14 and the affordable detachable tablet Lenovo Duet 5 Chromebook with an OLED display. The Acer Chromebook Plus 516 uses Nvidia’s GeForce Now cloud gaming platform to offer a viable gaming laptop for under $600.

Overall, Chrome OS is quicker and more versatile today than ever. Its foundation is still web-centric, but the platform now supports Google Play and Android apps, making it the ideal notebook companion if you have an Android phone. It even mimics Apple’s iMessage, allowing Chromebook owners to text from their laptops without picking up the phone.

Moreover, Chrome OS supports Linux, opening up the platform to traditional desktop software, like GIMP and Steam. The drawback is that the library isn’t as diverse as Windows or even macOS, and Linux support is still in beta. Still, the maturity of Chrome OS has proven to be a strong contender in a market dominated mainly by Windows.

Advertisement

Overall, if Chrome OS fits the bill for what you need in a laptop, you can save a lot of money by going with a Chromebook.

The types of laptops

There are several laptop categories, manufactured with a certain use or audience in mind. When shopping for a laptop, decide what you primarily intend to use the laptop for and seek out a category that aligns with those interests. Here are some broad categories and a couple of our favorites for each.

Entry-level ($500 or less)

Lenovo Chromebook Flex 5 front view showing keyboard and display.
Image used with permission by copyright holder

Laptops can be expensive, but manufacturers know that not everyone can afford a $2,000 machine. Buyers who need a laptop for the most basic purposes and want to save money can find great laptops that cost $500 or less.

In general, budget laptops are ideal for people who may not know a lot about computers and simply want a device that can carry out basic tasks. They’re built to last despite the low price, with competent construction and ergonomically sensible keyboards and touchpads. One great example is the Lenovo Chromebook Duet 3 detachable tablet, which manages to be quite usable with a surprisingly good display for only $300.

These laptops are typically light on hardware, meaning you won’t find loads of RAM or high-performance graphics, making them less ideal for AAA games or keeping hundreds of browser tabs open. They’re not incapable of decent performance, just limited as to what you can do compared to higher-priced models.

Advertisement

This is a category where Chromebooks excel, as they ditch some of the fancier features of Windows and macOS laptops, but there are options from Windows as well. You won’t find a macOS laptop for under $500 unless you buy an older used machine.

Midrange ($500-$1,500)

Asus Zenbook 14 Q425 front view showing display and keyboard.
Asus Zenbook 14 OLED Q425 Mark Coppock / Digital Trends

This price range is arguably the best in terms of bang for your buck. These laptops are often truly excellent. You get much better internal hardware than the entry-level offerings, but at the cost of premium features, high-powered graphics chips, and fancy materials . However, well-built, all-metal laptops are easily attainable.

The fact that this range is such a sweet spot for the industry means that you have plenty to choose from. There are laptops with great displays (including OLED panels), laptops with powerful processors, beautiful laptops, and ones that are light and portable with great battery life. You may not find a system that ticks every one of those boxes, but the best laptops under $1,000 are some of our favorites. This is also where you’ll find your least expensive macOS machine, the entry-level MacBook Air M2, but you can also squeeze in the newer MacBook Air M3. Several Microsoft Copilot+ PC laptops running Qualcomm’s Snapdragon X platform fit into this category, including excellent laptops like the Lenovo Yoga Slim 7x.

Premium ($1,500+)

Lenovo Yoga Pro 9i 16 top down view showing display and keyboard.
Lenovo Yoga Pro 9i 16 Mark Coppock / Digital Trends

This bracket contains some of the best laptops you can buy today. For a little extra money, you gain longer battery life (in some cases), improved performance from more powerful internal hardware, and larger and higher-resolution displays with more exotic technologies like mini-LED, and overall better build quality. If you’re a bit more of a power user and can afford it, this is the class of laptop you should consider the most.

Despite the higher cost of the premium laptop category, there are still plenty of choices. You can pick up stellar laptops in the 13-inch form with plenty of general computing power and connectivity options. If you’re interested in gaming on the side or content creation, you’ll want to jump up to a 16-inch laptop with higher-power chipsets and a dedicated graphics card.

This category even contains a more modern version of our favorite laptop of the past few years, the Dell XPS 13. If you want something a little heftier and more capable of content creation, the Dell XPS 16 is worth considering too. For gamers, the Asus ROG Zephyrus G14 is one of the best laptops we’ve come across for highly portable performance, while the Lenovo Yoga Pro 9i 16 offers real power in a supremely rugged and upgradeable chassis.

Advertisement

If you’re an Apple fan, we’d recommend the MacBook Pro. It’s costly, but it offers the best combination of performance and battery life.

2-in-1

The Surface Pro 11 on a white table in front of a window.
Luke Larsen / Digital Trends

The 2-in-1 laptop combines the convenience and ease of a tablet with the utility of a keyboard. This category includes two most common designs: 360-degree convertible and detachable. The convertible can serve as a tablet by flipping the keyboard under the screen. The detachable is essentially a tablet with a removable keyboard but it looks and feels like an ultra-thin laptop when combined. There are other types of 2-in-1s, such as the pull-forward design epitomized by the Microsoft Surface Studio Laptop 2.

Two-in-ones can provide a lot of versatility but are not the most powerful and expandable devices available. The uniqueness of their design can come with some low-power processors, integrated graphics only, and complexity. These 2-in-1 laptops are sometimes more expensive than clamshell laptops with comparable hardware.

When it comes to buying a 2-in-1, some are better laptops than they are tablets, and some are better tablets than they are laptops. Think hard about which “mode” you’ll likely use more before buying, and do so accordingly.

Our favorite 2-in-1 laptops for 2024 include the Microsoft Surface Pro 11 and the HP Spectre X360 14, always a reliable line for professionals.

Advertisement

Ultrabooks

Lenovo Slim 7i Gen 9 front view showing display and keyboard.
Lenovo Slim 7i Gen 9 Mark Coppock / Digital Trends

The term “ultrabook” is technically a specification that Intel used for extra-light, portable laptops designed to be easy to carry while still providing great battery life. They use SSDs, power-efficient Intel Core Ultra processors, and carefully designed clamshell bodies. This became a very popular type of computer, and many people began applying the name “ultrabook” to any compact, lightweight laptop designed for easy transport.

Today, any lightweight laptop may be called an ultrabook, although that isn’t entirely accurate (some are now referred to as ultraportables instead). You can find some good examples in our list of the best 13-inch and 14-inch laptops.

Business laptops

Lenovo ThinkPad X1 Carbon Gen 12 front view showing display and keyboard.
Lenovo ThinkPad X1 Carbon Gen 12 Mark Coppock / Digital Trends

Business laptops offer some intriguing features for the average buyer despite targeting professionals. Sure, they might not always offer the looks of more mainstream systems, but they tend to pack exceptional battery life and have more rugged and tough shells.

The biggest downside to business laptops is that they’re usually expensive. Laptops aimed at video editors and photographers are usually fast with larger displays offering excellent color accuracy. They are also much more likely to offer better protective systems like biometric validation and professionally oriented software packages due to their greater emphasis on security and privacy.

One of the most iconic laptop lines in the business category is the Lenovo ThinkPad, and the latest ThinkPad X1 Carbon Gen 12 is a fantastic entry in that range. For more options, check out our list of the best business laptop.

Gaming laptops

The Asus ROG Zephyrus G14 with an HDR demo playing on it.
Asus ROG Zephyrus G14 Jacob Roach / Digital Trends

Gaming laptops must be built to keep up with the unceasing march of progress. The best tout high-end processors and graphics chips, as well as enough RAM to run modern games. Anything less can render the hottest titles unplayable.

High-tier gaming laptops tend to be bulky, typically to accommodate better desktop-like hardware and larger screens. Their power-gulping components mean that battery life isn’t great — especially on systems with 4K  HDR displays. But this isn’t always the case, as our favorite gaming laptops tend to offer a good middle ground or offer more stealth gaming ability.

Advertisement

The category has also received a number of important upgrades in display technology that make the gaming experience even more enjoyable. OLED has made its way to gaming laptops, offering the usual excellent colors and inky blacks, and mini-LED made its debut in 2023 such as on the Asus Zephyrus M16. Gaming laptop displays have also reached new heights in terms of refresh rates, with 240Hz panels increasingly common and even 480Hz displays being available. Faster refresh rates mean that the displays can now keep up with the superfast components and offer high-speed gaming without tearing and ghosting.

What you need to know about hardware

As with any computer, hardware determines what a laptop can do. Better components will naturally be more expensive, so it is essential to consider the laptop’s primary role and choose hardware suitable for that purpose. A laptop purchased to browse the internet or write documents, for example, doesn’t need a high-end processor or video card.

CPU/Processor

As with any computer, the CPU is the brains of the notebook and does most of the general work. When the computer needs to access or change data, the CPU executes that task. Better CPUs will be able to process more data at quicker speeds. However, keep in mind that a CPU’s pure clock speed doesn’t necessarily paint the whole picture. If you’re unsure about your options, copy its model number (such as “Core Ultra 7 258V”) into a web search to compare your choices.

The current offerings from Intel are its Core Ultra Series 2 including the Core Ultra 5, 7, and 9 series in Lunar Lake models. Unlike earlier generations, the generation number is no longer included in the name, so you’ll have to learn the nomenclature to keep up. Meanwhile, AMD’s current notebook chips are its sixth-generation mobile Ryzen 8000 Series and Ryzen AI 9 CPUs, though they are a bit more difficult to find in laptop offerings. And Qualcomm has made a splash with its ARM-based Snapdragon X chipsets that combine better efficiency with strong performance.

Advertisement

The Intel chipsets are hybrid designs, similar to Apple’s M3, although not based on the ARM architecture as are Apple’s. There are more cores than in previous Intel CPUs, with a mix of Performance, Efficient, and Low Power Efficient cores meant to provide both faster and more efficient performance. Some 14th-gen parts are still being used as Intel updates to faster Arrow Lake chipsets, such as the highest-end 24-core Core i9-14900HX to rival Apple’s M3 Max in CPU performance. Most laptops, especially midrange and premium machines, should make the transition to Intel’s latest architectures throughout 2024. Intel’s Lunar Lake also includes faster neural processing units (NPUs) to speed up on-device AI tasks — something that is still very limited early in 2024. AMD and Qualcomm also offer faster NPUs, all to support Microsoft’s Copilot+ PC AI initiative.

The Ryzen 8000 uses an updated version of the current architecture and so is significantly faster than AMD’s previous offerings. Just as important are the updates to the integrated Radeon graphics, with the implementation of the RDNA3 architecture that’s used in AMD’s discrete GPUs and should bring increased performance in modern games.

When it comes to picking a laptop based on its CPU, newer is almost always better. Try to avoid buying a laptop with a CPU that’s a few generations old. Unless you’re doing something intensive like video editing, don’t worry about buying a chip outside of the midrange. The eight cores available in the Core Ultra 5 226V, for example, offer enough performance for almost anyone, although they compare more with the older Meteor Lake U-series chipsets.

Graphics

A Graphics Processing Unit, or GPU, is a chip that generates all images you see on the screen. Most lower-end laptops ship with integrated graphics, which means the component is mounted inside the main processor. For instance, nearly all Intel laptop chips include integrated graphics, namely the Intel Arc engine. AMD produces Accelerated Processing Units, or APU s, that combine CPU and GPU cores on the same chip (die) similarly.

Advertisement

Other laptops have an additional graphics chip/module soldered into the motherboard. These chips are called “discrete GPUs,” and they typically can’t be removed by the typical laptop owner. Nvidia and AMD are the primary vendors of these chips.

Nvidia’s latest laptop GPU family is the GeForce RTX 4000 Series, including the RTX 4050, 4050 Ti, 4060, 4070, 4080, and 4090.  These will be in the most expensive, most powerful gaming and business-class laptops, though some recent models may use older chips like the RTX 3050 that still perform well. Laptops based on the RTX 4000 Series are increasingly common and provide excellent gaming and creative application performance.

AMD discrete laptop graphics like the RX 7000M and 7000S offer vastly improved performance over integrated solutions, though they are far less common than Nvidia’s solutions.

Audio

Although some laptops offer good sound right out of the box, such as the MacBook Pro with its excellent six-speaker configuration, most laptops don’t have the room to fit decent speakers inside the casing. Most laptops provide ports to connect headphones or external speakers if you want a more immersive listening experience, although there’s a movement among some vendors to do away with the audio jack. The Dell XPS 13 is one example.

Advertisement

Memory

RAM, often referred to as system memory, refers to dedicated hardware for temporarily storing and accessing information for immediate use. All current tasks store data in RAM, like the web browser currently displaying this guide.

Essentially, the more RAM, the more information a computer can call up at any given time, and thus the more things it can do. However, unlike storage (see below), RAM does not store data indefinitely. Once RAM loses power, all held data is lost.

How much RAM do you need? 16GB is the new sweet spot for most. You’ll want to jump up to 32GB or more, though, if you’re running intensive applications or doing any kind of content creation. On MacBooks, 16GB is the least you should consider.

Storage

The amount of storage space on a laptop’s internal drive(s) is how much data it can hold indefinitely. All data, from installed programs to downloaded music, reside on an internal storage device. Today, most devices are based on NAND Flash technology, commonly solid-state drives (SSD). Spinning hard disk drives (HDD) are becoming hard to find. Chromebooks tend to provide less storage space thanks to the lesser requirements of Chrome OS and the tendency to store more data in the cloud.

Advertisement

In contrast to RAM, data in storage does not necessarily need to be in use. An installed program that is currently inactive takes up storage space but not memory. As mentioned above, most modern laptops now use solid-state drives (SSDs), which are faster and more reliable than traditional hard drives. There was once a major price difference between laptops with SSDs and HDDs, but given the scarcity of the latter that price advantage no longer applies.

An SSD uses NAND Flash to store data, which doesn’t have moving parts. It offers a dramatic performance boost over a conventional hard drive – which does have moving parts — and can provide the most dramatic improvement in laptop usage when buying a new system.

Make sure your next purchase has an SSD as the primary drive, although that’s almost guaranteed. If you need more space, grab a big external drive too.

Ports

Ports can quickly become confusing on a laptop due to a complex labyrinth of terminology. Make sure to focus on the USB ports that you need.

Advertisement

Some laptops continue to offer USB-A ports to support legacy devices, like peripherals and external drives. They’re rectangular ports with squared corners and only work with a one-side-up connector. This interface supports USB 2.0 (480Mbps), USB 3.2 Gen 1 (5Gbps), or USB 3.2 Gen 2 (10 Gbps), depending on the laptop manufacturer.

Most laptops today don’t offer USB-A ports due to their size. Instead, you’ll see one or more of the newer USB-C ports. This interface is smaller, narrower, and more rounded than USB-A. It’s generally used with several technologies, including Thunderbolt 4 (40Gbps) on Intel-based laptops (AMD doesn’t support Thunderbolt 4), USB4, USB 3.2 Gen 1, USB 3.2 Gen 2, and DisplayPort, depending on the laptop manufacturer. USB-C requires a different, thinner either-side-up connecter.

If you plan to connect a second external monitor for more large-screen work, make sure that the laptop has the right connections for that monitor, such as USB-C, DisplayPort, or HDMI. You may find VGA on old models, and video output is possible through USB-A using DisplayLink drivers and the appropriate adapter.

Displays

It used to be that you had a choice between IPS LED displays of various quality and resolution, mainly Full HD (1920 x 1080), WQHD (2560 x 1440), or 4K UHD (3840 x 2160). Most laptop displays were in the 16:9 widescreen aspect ratio except for Apple’s MacBook displays which were taller at 16:10 and Microsoft’s Surface line standardized on the even taller 3:2. Both provide better productivity thanks to displaying more vertical information.

Advertisement

Flash forward to 2024, and laptop displays have taken some serious leaps. Buying a laptop today involves a decision between a bunch of different display options, and they’re all for the better.

First, we have technologies like organic light-emitting displays (OLED), Samsung’s quantum light-emitting diode (QLED), and Mini-LED (mainly used by Apple) that all provide incredibly deep contrast, tons of brightness, and dynamic and accurate colors. Even IPS displays have gotten better, with improved contrast, brightness, and colors that make them great options for creative professionals.

Next, the industry is almost fully transitioned to taller displays, 16:10 and the even taller 3:2. You can still buy 16:9 laptops, especially in gaming machines, but most new laptops have taller displays. As mentioned earlier, that’s a boon for productivity, providing more vertical space for documents and web pages. You get some letterboxing when watching video, but that’s a small price to pay for a more productive environment.

Finally, display resolutions are all over the map. For example, Dell used 3.5K (3456 x 2160) displays in its now-defunct XPS 15 OLED machines, and other manufacturers have their own resolutions as well. This is a mixed bag — if you want a true 4K display in an XPS, then you’ll need to choose the XPS 16’s OLED option. There are tradeoffs, but that also means there are more power-efficient options with higher resolution than Full HD but not quite as power-hungry as full 4K.

Advertisement

Touchscreen support

Touchscreens were once exclusive to high-end laptops mainly because the hardware was expensive and touch-based screens didn’t seem practical. What helped merge the two technologies was the tablet craze and the PC market’s need to regain its footing. Enter the touch-centric 2-in-1 PCs and the overall reduction in manufacturing costs. Touchscreens are now more common — even on some budget designs — unless you own a MacBook.

Bill Roberson/Digital Trends

Windows 11 has gone a long way toward making these touchscreen and combination designs more viable. The interface and software are designed with touch in mind, including conventional programs like Office and the Edge browser. Third-party software, like Google’s popular Chrome browser, also offers great touch support.

While touch may seem to be an interesting feature given that you smudge up a smartphone every day, consider if it’s important on a laptop. Touch makes sense on a 2-in-1 device, and even on laptops that can lean back in Stand Mode. If you don’t think a touch screen on a clamshell design will be practical, however, don’t dump extra bucks into a feature you’ll never use.

Best time to buy your laptop

Image used with permission by copyright holder

One of the most common questions about buying a new laptop is when to shop to get the best deals. There’s no strict rule for securing a cheap but good laptop. But there are a few different ways you can time your purchase window to find a good deal. Consider these timelines if you’re in the market for a new laptop.

Black Friday and Cyber Monday: These two dates in November are probably the most obvious ones for finding amazing deals. However, act fast, as laptop supplies tend to run out quickly. If you wait for the post-Thanksgiving rush, it may be hard to get the laptop you want, so you may not want to wait too long.

You can get ahead by heading online beforehand to see where the best deals — and shortest lines — will be. Doing your research in advance is a smart strategy.

Advertisement

Back-to-school season: Many retailers offer lower prices to help accommodate students who need new laptops for school. The fall is a great time to shop if you want a more affordable device with a steep discount, even if you aren’t a student heading back to class.

A couple of months after a big release: When a company prepares to release a new model, they typically lower the price of older generations of laptops. Both manufacturers and retailers do this to deplete stock, so there is both physical space to display new releases and customer demand for it.

In reality, there are sometimes minimal differences between laptop generations. This makes it a good idea to watch tech news so you can get a laptop at a great price in the months before a newer model is released. One caveat is the switch from Intel 13th-gen to Intel 14th-gen machines, where the differences will be much more substantial.

Another tip is to search manufacturer websites to stay up-to-date on what’s in the queue and when these new devices will be released to the public. Signing up for their newsletter could be beneficial, ensuring that you never miss a deal. Once you snag the best deal, you can simply unsubscribe from the newsletter, so you don’t get the emails anymore.

Advertisement






Source link

Advertisement
Continue Reading
Advertisement
Click to comment

You must be logged in to post a comment Login

Leave a Reply

Technology

Why mission TRISHNA has an edge over other similar missions?- The Week

Published

on

Why mission TRISHNA has an edge over other similar missions?- The Week

At a time when climate change and managing water resources are major global concerns, the importance of advanced technology for monitoring and data collection is greater than ever. One notable effort in this field is the partnership between the Indian Space Research Organisation (ISRO) and the French space agency, Centre National d’Études Spatiales (CNES). Together, they have developed an innovative thermal imaging satellite called TRISHNA. The satellite, weighing approximately 770 kg, is expected to orbit at an altitude of 761 km in a sun-synchronous orbit, with a local crossing time (descending node) of 1 p.m., ensuring consistent lighting conditions for its observations. The mission is set to last for five years, with a launch date targeted for 2025. 

This joint  mission aims to deliver high-quality thermal images to help us better understand and tackle environmental issues, especially those connected to climate change and water management. TRISHNA, short for Thermal infra Red Imaging Satellite for High-resolution Natural resource Assessment, is built to provide exceptional details about the Earth’s land and water temperatures. These measurements are crucial for various uses, such as farming strategies, tracking urban heat, and managing disasters. 

“The satellite’s advanced technology also addresses food security challenges by focusing on the impacts of human-induced climate change and improving water resource management through evapotranspiration monitoring. TRISHNA aims to enhance our understanding significantly and offer more accurate data for scientists, policymakers, and environmentalists around the world,” explained space expert Girish Linganna. 

Evapotranspiration is the process by which water is transferred from the land to the atmosphere through two main mechanisms: evaporation from soil and water surfaces, and transpiration from plants. It’s a crucial part of the water cycle and helps in understanding water use and availability, especially in agriculture and climate studies. 

Advertisement

The TRISHNA satellite comes with two main payloads—Thermal Infra-Red (TIR) Payload provided by CNES which features a four-channel long-wave infrared imaging sensor capable of high-resolution surface temperature and emissivity mapping. Then the second payload Visible – Near Infra-Red – Short Wave Infra-Red (VNIR-SWIR) Payload developed by ISRO which includes seven spectral bands designed for detailed mapping of surface reflectance in VSWIR bands (Visible, Short-Wave Infrared) and will help generate important biophysical and radiation budget variables. 

The satellite will orbit the Earth in a sun-synchronous path at an altitude of 761 km, crossing the equator at 12:30 PM local time. This orbit allows the satellite to capture images with a spatial resolution of 57 meters for land and coastal areas, and 1 km for ocean and polar regions. The mission is planned to last for 5 years. 

“Thermal imaging satellites are essential for monitoring Earth’s climate, water resources, and environmental changes. They use thermal sensors to detect heat variations on the Earth’s surface, aiding studies on urban heat islands, agricultural health, and forest fire detection,” added Linganna. 

There have been other similar programs such as the USA’s Landsat, Europe’s Sentinel-3, and China’s Gaofen series. The Landsat program, overseen by NASA and USGS, has been providing continuous Earth observation data since 1972. This program is essential for monitoring environmental changes, land use, and natural resources with high-quality satellite images. The latest data from the Landsat program, featuring Landsat 9, is freely accessible to the public. Launched on September 27, 2021, Lands at 9 continues the work of previous satellites by offering detailed images of Earth. This data is vital for tracking land resources and understanding environmental changes. One can find this data on platforms like EarthExplorer, LandsatLook, and GloVis. 

Advertisement

On the other hand Sentinel-3(Europe) is a key part of the Copernicus Programme, which helps monitor our oceans and land. There are two satellites, Sentinel-3A and Sentinel-3B, that provide detailed images and measurements. These satellites are useful for studying the oceans, water bodies, and land, and they play an important role in climate change research and protecting the environment. Recently, there have been some issues with the quality of  Sea and Land Surface Temperature Radiometer (SLSTR)products due to satellite maneuvers, and the security system has been upgraded. 

On the other hand China’s Gaofen series is part of the China High-resolution Earth Observation System (CHEOS). The most recent satellite, Gaofen 12 (03), was launched in 2022. It orbits close to the poles and uses microwave remote sensing technology. This satellite helps improve land surveys, urban planning, and disaster relief efforts. Each of these programs contributes unique capabilities and data sets, advancing scientific understanding and practical applications in agriculture, water management, and disaster response. 

The TRISHNA satellite, a collaboration between ISRO and CNES, represents a significant advancement in thermal imaging for climate and water monitoring. Compared to other prominent satellites, Trishna’s cutting-edge technology captures high-resolution thermal data with exceptional precision. Landsat’s historical data is invaluable, but TRISHNA offers higher resolution and sensitivity. Sentinel-3 excels in marine and coastal monitoring, while TRISHNA is tailored for terrestrial applications. Gaofen-5 provides detailed data on air pollution and water quality, yet TRISHNA’s focus on climate and water monitoring offers more targeted thermal data. TRISHNA’s frequent revisits and high temporal resolution enable near real-time monitoring of climatic and hydrological phenomena, enhancing our ability to track local and global climate patterns,” explained Linganna. 

The ISRO-CNES collaboration on TRISHNA highlights the potential of international cooperation in addressing global challenges like climate change and water resource management. TRISHNA, with its advanced thermal imaging technology, complements existing systems by providing higher resolution data and more frequent revisit times, enhancing global environmental monitoring. Its high spatial resolution and superior thermal sensitivity place it at the forefront of thermal imaging satellites. TRISHNA’s data will support applications such as agricultural planning, urban heat island analysis, and climate change studies, playing a critical role in informing policy decisions and fostering sustainable development. 

Advertisement

“TRISHNA’s technical prowess lies in its advanced payloads. The Thermal Infra-Red (TIR) payload, provided by CNES, features a four-channel long-wave infrared imaging sensor capable of high-resolution surface temperature and emissivity mapping. The Visible – Near Infra-Red – Short Wave Infra-Red (VNIR-SWIR) payload, developed by ISRO, includes seven spectral bands designed for detailed mapping of surface reflectance of VSWIR bands to generate important biophysical and radiation budget variables,” said Srimathy Kesan, founder and CEO of Space Kidz India, which is into design, fabrication and launch of small satellites, spacecraft and ground systems. 

This expert further says that when compared to other thermal imaging satellites globally, TRISHNA stands out for its high spatial and temporal resolution. “If one compares it with the British company SatVu’s HOTSAT-1 satellite, which also focuses on high-resolution thermal imaging, captures thermal images from space revealing the planet’s surface temperature in great detail. However, HOTSAT-1’s resolution is down to 33 feet, which, while impressive, does not match TRISHNA’s ambition to achieve a resolution better than 100 meters with frequent revisits several times a week,” added Kesan. 

Source link

Advertisement
Continue Reading

Technology

Star Wars’ Daisy Ridley reveals why she finds her Rey return scary

Published

on

Star Wars’ Daisy Ridley reveals why she finds her Rey return scary

Last year, Lucasfilm announced a handful of promising new film projects set within the Star Wars universe, including one that will follow Rey (Daisy Ridley) as she attempts to rebuild the Jedi Order following the events of 2019’s Star Wars: Episode IX — The Rise of Skywalker. Lucasfilm President Kathleen Kennedy subsequently confirmed in an interview with IGN that the film will take place 15 years after the conclusion of Star Wars’ Sequel Trilogy and will find the Jedi “in disarray” and Rey trying to rebuild the Order “based on the books, based on what she promised Luke (Mark Hamill).”

Since then, progress on the project has been slow. Its original writers, Damon Lindelof and Justin Britt-Gibson, departed the project in March 2023, and their replacement, Peaky Blinders creator Steven Knight, reportedly parted ways with the film recently as well. For her part, Daisy Ridley has remained fairly tight-lipped about the project and its status. In a recent interview with The Hollywood Reporter, though, she did open up about actually preparing to reprise her life-changing Star Wars role.

“I feel like the new one/new ones will be so interesting. Time has passed and a lot has changed for me, personally,” Ridley told the outlet. “It’ll be interesting to come back to someone who I know so well, but in such a different moment. For me to inhabit Rey again after all the time that we haven’t seen her, it’s actually scary, but it’s also exciting.”

Rey holds a yellow lightsaber in Star Wars: Episode IX - The Rise of Skywalker.
Lucasfilm

Given how much time has passed since Ridley worked on The Rise of Skywalker, it’s easy to see why it might seem both daunting and a bit strange to return to her role in that film. Ridley, who became a household name because of her breakout turn as Rey in 2015’s Star Wars: Episode VII — The Force Awakens, has also grown a lot as an actress in the years since she made her Star Wars debut. To watch her return to a role that she played when she was less seasoned as a big-screen performer should be an interesting experience for Star Wars fans everywhere.

It is, unfortunately, unclear when fans will actually get to see Ridley back as Rey. Sharmeen Obaid-Chinoy is still attached to direct the film in question, but its behind-the-scenes screenwriter exits have cast doubt on when it will actually begin shooting — let alone when it will hit theaters. There is a lot of pressure on the film to get Star Wars’ post-Sequel Trilogy era off to a strong start, which may be why Lucasfilm seems to be taking so much time developing it.

Advertisement

In the meantime, while fans wait for an official update on the project and Ridley continues preparing to step back into her Jedi robes, Lucasfilm still has a few other film and TV titles in the pipeline right now. These projects include The Mandalorian & Grogu, which is currently set to hit theaters on May 22, 2026.






Source link

Advertisement
Continue Reading

Technology

EU slaps LinkedIn with $334 million fine for targeted advertising

Published

on

EU slaps LinkedIn with $334 million fine for targeted advertising

The EU has slapped a $334 million fine on LinkedIn over its targeted advertising practices. The Microsoft-owned social media platform may not challenge the fine. Instead, it would change its ad practices to comply with the GDPR.

LinkedIn fined $334 million by lead European Union privacy regulator

The EU has confirmed LinkedIn is liable to pay a 310 million euro (approx. $334 million) fine. The regulator has fined the Microsoft-owned professional networking platform for its targeted advertising practices.

The Irish Data Protection Commission (DPC) has determined that LinkedIn had improperly conducted behavioral analyses of the EU members’ personal data for targeted advertising. The regulator is relying on the General Data Protection Regulation (GDPR) that’s currently in effect in the EU.

Speaking about the fine on LinkedIn, DPC Deputy Commissioner Graham Doyle stated, “The lawfulness of processing is a fundamental aspect of data protection law and the processing of personal data without an appropriate legal basis is a clear and serious violation of a data subjects’ fundamental right to data protection.”

Advertisement

Simply put, the EU watchdog has argued that LinkedIn violated the GDPR by not obtaining proper consent. Moreover, it has accused the networking platform of failing to demonstrate legitimate interest or showing a contractual necessity to process the data it and third parties collected.

Did Microsoft expect to pay a fine for its data collection policies?

Microsoft was reportedly aware it could face some heat from the EU over its data collection practices. According to Reuters, back in 2023, the tech giant said it expected to take a charge of about $425 million for a potential fine from the Irish regulator for its LinkedIn unit.

LinkedIn hasn’t categorically refuted the allegations. The company issued a statement that said, “While we believe we have complied with the General Data Protection Regulation (GDPR), we are working to ensure our ad practices meet this decision by the IDPC’s deadline.”

It appears LinkedIn might not contest the fine. Instead, the company has indicated it would alter its data collection practices or policies to ensure the company complies with the GDPR.

Advertisement

Source link

Continue Reading

Technology

Mosseri confirms Instagram reduces video quality for posts that aren’t raking in views

Published

on

Mosseri confirms Instagram reduces video quality for posts that aren’t raking in views

In an AMA this weekend, Instagram head Adam Mosseri shared some insight into why some videos on the platform appear reduced in quality well after they’re posted, and it all boils down to performance. Responding to a question about old stories looking “blurry” in highlights, Mosseri said, “In general, we want to show the highest-quality video we can. But if something isn’t watched for a long time — because the vast majority of views are in the beginning — we will move to a lower quality video.” If the video later spikes in popularity again, “then we will re-render the higher quality video,” he said in the response, which was reposted by a Threads user (spotted by The Verge).

Further elaborating in a follow-up reply, though, Mosseri added, “We bias to higher quality (more CPU intensive encoding and more expensive storage for bigger files) for creators who drive more views.” The comment has sparked concern from small creators in the replies who say it puts them at a disadvantage competing with others who have larger platforms. Meta has previously said it uses “different encoding configurations to process videos based on their popularity” as part of how it manages its computing resources.

The performance system “works at an aggregate level,” Mosseri said, “not an individual viewer level… It’s not a binary theshhold [sic], but rather a sliding scale.” In response to one user who questioned its fairness for smaller creators, Mosseri said the quality shift “doesn’t seem to matter much” in practice as it “isn’t huge” and viewers appear to care more about video content over quality. “Quality seems to be much more important to the original creator, who is more likely to delete the video if it looks poor, than to their viewers,” he said. Understandably, not everyone seems convinced.

Source link

Advertisement
Continue Reading

Technology

Hospitals use a transcription tool powered by a hallucination-prone OpenAI model

Published

on

Hospitals use a transcription tool powered by a hallucination-prone OpenAI model

A few months ago, my doctor showed off an AI transcription tool he used to record and summarize his patient meetings. In my case, the summary was fine, but researchers cited by ABC News have found that’s not always the case with OpenAI’s Whisper, which powers a tool many hospitals use — sometimes it just makes things up entirely.

Whisper is used by a company called Nabla for a medical transcription tool that it estimates has transcribed 7 million medical conversations, according to ABC News. More than 30,000 clinicians and 40 health systems use it, the outlet writes. Nabla is reportedly aware that Whisper can hallucinate, and is “addressing the problem.”

A group of researchers from Cornell University, the University of Washington, and others found in a study that Whisper hallucinated in about 1 percent of transcriptions, making up entire sentences with sometimes violent sentiments or nonsensical phrases during silences in recordings. The researchers, who gathered audio samples from TalkBank’s AphasiaBank as part of the study, note silence is particularly common when someone with a language disorder called aphasia is speaking.

One of the researchers, Allison Koenecke of Cornel University, posted examples like the one below in a thread about the study.

Advertisement

The researchers found that hallucinations also included invented medical conditions or phrases you might expect from a YouTube video, such as “Thank you for watching!” (OpenAI reportedly used to transcribe over a million hours of YouTube videos to train GPT-4.)

The study was presented in June at the Association for Computing Machinery FAccT conference in Brazil. It’s not clear if it has been peer-reviewed.

OpenAI spokesperson Taya Christianson emailed a statement to The Verge:

We take this issue seriously and are continually working to improve, including reducing hallucinations. For Whisper use on our API platform, our usage policies prohibit use in certain high-stakes decision-making contexts, and our model card for open-source use includes recommendations against use in high-risk domains. We thank researchers for sharing their findings.

Source link

Advertisement
Continue Reading

Technology

NYT Strands today — hints, answers and spangram for Monday, October 28 (game #239)

Published

on

NYT Strands homescreen on a mobile phone screen, on a light blue background

Strands is the NYT’s latest word game after the likes of Wordle, Spelling Bee and Connections – and it’s great fun. It can be difficult, though, so read on for my Strands hints.

Want more word-based fun? Then check out my Wordle today, NYT Connections today and Quordle today pages for hints and answers for those games.

Source link

Advertisement
Continue Reading

Trending

Copyright © 2024 WordupNews.com