Scientists Are Mapping the Boundaries of What Is Knowable and Unknowable

Moore designed his pinball machine to complete the analogy to the Turing machine. The starting position of the pinball represents the data on the tape being fed into the Turing machine. Crucially (and unrealistically), the player must be able to adjust the ball’s starting location with infinite precision, meaning thatContinue Reading

Torpedo Bats and the Physics of the Sweet Spot

If the ball hits the stick and bounces back, what will happen to the stick? If you said the stick will recoil to the right, you’re correct. We can think of this as a collision. When two objects collide, they exert forces on each other. And per Newton, the forcesContinue Reading

Hikaru Utada Would Rather Play CERN Than Coachella

Utada: What are you most focused on pursuing at the moment? Kojima: There is a theory in particle physics called the Standard Model, but it can only explain about 5 percent of the mass and energy in the universe. In fact, it is thought that about 26 percent of theContinue Reading

Inside arXiv—the Most Transformative Platform in All of Science

On the library’s side, some people thought Ginsparg was too hands-on. Others said he wasn’t patient enough. A “good lower-level manager,” according to someone long involved with arXiv, “but his sense of management didn’t scale.” For most of the 2000s, arXiv couldn’t hold on to more than a few developers.Continue Reading

Quantum Computing Is Dead. Long Live Quantum Computing!

This is the year of quantum science and technology. Literally: The United Nations said so. But no amount of pomp and hype can make something true. The fact is, it’s been the year of quantum nearly every year for many, many years now. It’s always the next big thing. It’sContinue Reading

Hot New Thermodynamic Chips Could Trump Classical Computers

Guillaume Verdon stands before me with a new kind of computer chip in his hand—a piece of hardware he believes is so important to the future of humanity that he’s asked me not to reveal our exact location, for fear that his headquarters could become the target of industrial espionage.Continue Reading

The Weight of the Internet Will Shock You

The internet is massive. But does it have … actual mass? Big server farms and miles of fiber-optic cables do, of course, but we don’t mean the infrastructure of the internet. We mean the internet itself. The information. The data. The cybernetics. And because storing and moving stuff through cyberspaceContinue Reading

Evidence Grows That Dark Energy Changes Over Time

That’s what DESI was designed to do: take precise measurements of the apparent size of these bubbles (both near and far) by determining the distances to galaxies and quasars over 11 billion years. That data can then be sliced into chunks to determine how fast the universe was expanding atContinue Reading