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

Shorts

Condensates, semiliquid droplets of concentrated proteins, are a “hot area in biology,” says biologist Chris Holland. They help mold squid beaks and allow mussels to adhere themselves to rocks. And recently, new research reveals that they also help give spider silk its characteristic strength. Each of these strong yet flexible materials are tougher than much of what humans can build synthetically. Scientists dream of making spider silk into high-performing materials for seat belts, helmets, naval materials, and even scaffolds to help repair brain cells. But attempts to make the material in the lab have fallen short. Kevlar, a synthetic fiber, is currently our toughest material, but it requires processing at very high temperatures and acidic conditions. “Here, you have an organism like a spider or a mussel, which is basically making a superior material under ambient conditions in seawater or in just plain air,” said biological materials scientist Matthew Harrington. 🕸️ Learn more on our web-site:

Condensates, semiliquid droplets of concentrated proteins, are a “hot area in biology,” says biologist Chris Holland. They help mold squid beaks and allow mussels to adhere themselves to rocks. And recently, new research reveals that they also help give spider silk its characteristic strength. Each of these strong yet flexible materials are tougher than much of what humans can build synthetically. Scientists dream of making spider silk into high-performing materials for seat belts, helmets, naval materials, and even scaffolds to help repair brain cells. But attempts to make the material in the lab have fallen short. Kevlar, a synthetic fiber, is currently our toughest material, but it requires processing at very high temperatures and acidic conditions. “Here, you have an organism like a spider or a mussel, which is basically making a superior material under ambient conditions in seawater or in just plain air,” said biological materials scientist Matthew Harrington. 🕸️ Learn more on our web-site:

10,511 просмотров

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.

166,264 просмотров

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.

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This is the first microscopic video of 𝘗𝘭𝘢𝘴𝘮𝘰𝘥𝘪𝘶𝘮 entering a red blood cell, taken in 1978. Upon entry, the parasite infects a cell with malaria. Within days, millions of compromised cells could be lurking in the bloodstream.

This is the first microscopic video of 𝘗𝘭𝘢𝘴𝘮𝘰𝘥𝘪𝘶𝘮 entering a red blood cell, taken in 1978. Upon entry, the parasite infects a cell with malaria. Within days, millions of compromised cells could be lurking in the bloodstream.

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🧊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 просмотров

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.

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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.

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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.

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Ctenophores are considered “immortal jellyfish:” they have the Benjamin Button–like ability to reverse their development in the face of prolonged starvation or injury.

Ctenophores are considered “immortal jellyfish:” they have the Benjamin Button–like ability to reverse their development in the face of prolonged starvation or injury.

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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. 🧵

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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)

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Turbulence is all around us: bumping our planes, shaping our waves, swirling milk into our coffee. While these systems can begin simply, they quickly become extremely chaotic and complex.

Turbulence is all around us: bumping our planes, shaping our waves, swirling milk into our coffee. While these systems can begin simply, they quickly become extremely chaotic and complex.

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The heartbeat and other bodily processes play a surprising role in shaping perception and cognition.

The heartbeat and other bodily processes play a surprising role in shaping perception and cognition.

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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.

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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?

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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:

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Despite being a warm, wet, and decidedly classical environment, can a living cell maintain fragile quantum states?

Despite being a warm, wet, and decidedly classical environment, can a living cell maintain fragile quantum states?

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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.

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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.

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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.

31,556 просмотров

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