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Illuminating math and science. Supported by @SimonsFdn. 2022 Pulitzer Prize in Explanatory Reporting.

Shorts

In 2001, detectors in the Super-Kamiokande neutrino observatory experienced a catastrophic chain-reaction implosion. It was later repaired and in 2006, refilled with ultra-pure water, seen here.

In 2001, detectors in the Super-Kamiokande neutrino observatory experienced a catastrophic chain-reaction implosion. It was later repaired and in 2006, refilled with ultra-pure water, seen here.

163,515 Aufrufe

If you sandwich a ball between two parallel planes, it will roll perfectly. But surprisingly, smaller, pointier shapes can do this too.

If you sandwich a ball between two parallel planes, it will roll perfectly. But surprisingly, smaller, pointier shapes can do this too.

70,235 Aufrufe

In computer simulations, as an object slides along the surface of ice, a structureless, "amorphous" layer forms. Materials scientists at Saarland University in Germany argue that this process may be the cause of ice’s slipperiness.

In computer simulations, as an object slides along the surface of ice, a structureless, "amorphous" layer forms. Materials scientists at Saarland University in Germany argue that this process may be the cause of ice’s slipperiness.

333,920 Aufrufe

Every time you shuffle a deck of cards, you produce a configuration that has almost certainly never existed before, and never will again. But how do you know when you’ve shuffled enough times to mix up the deck?

Every time you shuffle a deck of cards, you produce a configuration that has almost certainly never existed before, and never will again. But how do you know when you’ve shuffled enough times to mix up the deck?

36,505 Aufrufe

Meet the ultimate gatekeeper of the nucleus. This molecular machine determines what compounds are welcome inside and which shall not pass. The mechanism behind its selectivity remains a mystery.

Meet the ultimate gatekeeper of the nucleus. This molecular machine determines what compounds are welcome inside and which shall not pass. The mechanism behind its selectivity remains a mystery.

31,407 Aufrufe

🧊Scientists generally agree that a thin watery layer on the surface of ice is responsible for ice’s slipperiness. But why does this layer form? Is it due to pressure, friction, pre-melting, or something else? Daniel Bonn built a microscopic ice-skating rink to test out his theory.

🧊Scientists generally agree that a thin watery layer on the surface of ice is responsible for ice’s slipperiness. But why does this layer form? Is it due to pressure, friction, pre-melting, or something else? Daniel Bonn built a microscopic ice-skating rink to test out his theory.

169,269 Aufrufe

Observe this mouse blastocyst's transformation. At first, it seems as though the cell is almost self-destructing. But these fracturing mechanisms are actually constructive, creating a cavernous space for a mouse fetus to grow in.

Observe this mouse blastocyst's transformation. At first, it seems as though the cell is almost self-destructing. But these fracturing mechanisms are actually constructive, creating a cavernous space for a mouse fetus to grow in.

98,135 Aufrufe

Watch as this plant’s chloroplasts shift in response to bright light (which turns on at the 20-minute mark, indicated in the upper left). These organelles are solving a packing problem: how to optimize photosynthesis without sustaining damage from dangerously intense rays.

Watch as this plant’s chloroplasts shift in response to bright light (which turns on at the 20-minute mark, indicated in the upper left). These organelles are solving a packing problem: how to optimize photosynthesis without sustaining damage from dangerously intense rays.

45,253 Aufrufe

Plants don’t have eyes or brains. How do they know where light is coming from? Seedlings “see” with their whole bodies.

Plants don’t have eyes or brains. How do they know where light is coming from? Seedlings “see” with their whole bodies.

27,513 Aufrufe

Dijkstra’s algorithm doesn’t just tell you the fastest route to one destination. Instead, it gives you an ordered list of travel times from your current location to every other point that you might want to visit — a solution to what researchers call the single-source shortest-paths problem.

Dijkstra’s algorithm doesn’t just tell you the fastest route to one destination. Instead, it gives you an ordered list of travel times from your current location to every other point that you might want to visit — a solution to what researchers call the single-source shortest-paths problem.

274,810 Aufrufe

In 1874, Georg Cantor published one of the most important papers in math’s 4,000-year history. The ideas in it were stolen. 🧵

In 1874, Georg Cantor published one of the most important papers in math’s 4,000-year history. The ideas in it were stolen. 🧵

74,050 Aufrufe

A trio of mathematicians built the first physical model of a “monostable” tetrahedron, a shape that will always flip-flop onto the same face no matter what side you place it on. In order for it to work properly, it had to be engineered to a level of precision within one-tenth of a gram and one-tenth of a millimeter. (From the archive)

A trio of mathematicians built the first physical model of a “monostable” tetrahedron, a shape that will always flip-flop onto the same face no matter what side you place it on. In order for it to work properly, it had to be engineered to a level of precision within one-tenth of a gram and one-tenth of a millimeter. (From the archive)

64,668 Aufrufe

Columnist Natalie Wolchover spent the early weeks of the pandemic learning how the 25-year-old Austrian logician and mathematician Kurt Gödel established that no formal system of math can ever be complete. “Oh yeah, that time you almost went crazy?” was how her wife remembered it. Read the full column:

Columnist Natalie Wolchover spent the early weeks of the pandemic learning how the 25-year-old Austrian logician and mathematician Kurt Gödel established that no formal system of math can ever be complete. “Oh yeah, that time you almost went crazy?” was how her wife remembered it. Read the full column:

28,724 Aufrufe

Living tissues can withstand immense forces, but no organ is quite as lively or forceful as the heart. The zebra fish heart — which is about the size of a poppy seed — beats 150 times per minute. It expands nearly twice its size and then contracts with each rhythmic pulse.

Living tissues can withstand immense forces, but no organ is quite as lively or forceful as the heart. The zebra fish heart — which is about the size of a poppy seed — beats 150 times per minute. It expands nearly twice its size and then contracts with each rhythmic pulse.

54,247 Aufrufe

Once considered merely packing peanuts for the brain, new studies suggest that large brain cells called astrocytes supervise the circuits that control brain states like hopelessness, sleep, and hunger. Ingrid Wickelgren reports:

Once considered merely packing peanuts for the brain, new studies suggest that large brain cells called astrocytes supervise the circuits that control brain states like hopelessness, sleep, and hunger. Ingrid Wickelgren reports:

61,968 Aufrufe

How is it possible that a black hole’s surface tells us about its interior volume? This finding is a critical clue towards our understanding of the quantum nature of space-time.

How is it possible that a black hole’s surface tells us about its interior volume? This finding is a critical clue towards our understanding of the quantum nature of space-time.

19,401 Aufrufe

Meet the ultimate gatekeeper of the nucleus. This molecular machine determines what compounds are welcome inside and which shall not pass. The mechanism behind its selectivity remains a mystery.

Meet the ultimate gatekeeper of the nucleus. This molecular machine determines what compounds are welcome inside and which shall not pass. The mechanism behind its selectivity remains a mystery.

48,549 Aufrufe

According to the theoretical physicist and author Carlo Rovelli, there is no such thing as objective reality — only perspectives. In a conversation with Zack Savitsky and a new video on the Quanta YouTube channel, Rovelli shares his own perspective on time, gravity, philosophy, and the nature of our world.

According to the theoretical physicist and author Carlo Rovelli, there is no such thing as objective reality — only perspectives. In a conversation with Zack Savitsky and a new video on the Quanta YouTube channel, Rovelli shares his own perspective on time, gravity, philosophy, and the nature of our world.

65,860 Aufrufe

“You take water, and just the way you compress it — a little bit faster, a bit slower, up and down, at the right timescale — and then you can find this completely unexpected behavior,” said researcher Marius Millot.

“You take water, and just the way you compress it — a little bit faster, a bit slower, up and down, at the right timescale — and then you can find this completely unexpected behavior,” said researcher Marius Millot.

21,879 Aufrufe

A new mathematical framework demonstrates that new species tend to evolve in sudden, rapid bursts instead of through slow, gradual change. Jake Buehler reports:

A new mathematical framework demonstrates that new species tend to evolve in sudden, rapid bursts instead of through slow, gradual change. Jake Buehler reports:

67,759 Aufrufe

Videos

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