Excellent biomechanics, the adorable blue bear's wooden gait may inspire precision robotics.
Also: the controversial claim that frozen blue bears achieve quantum entanglement

Is there anything a small slow animal can do? These amazingly tiny animals, known as water bears, can withstand the toughest conditions: extreme stress, extreme temperatures, radiation, drought, starvation - and even exposure to outer space. This stubbornness makes them a case study of interest to scholars.

There is rarely time to write about any interesting science fiction that comes to us. So this year, we're once again launching a series of twelve-day Christmas specials, highlighting a vanished sci-fi story in 2020 every day from December 25 to January 5. Today: The Amazing Physics of the Long-suffering Humble. Earlier this year, researchers at Rockefeller University examined the blue bear's distinctive gait and concluded that the creature's movement was comparable to that of an insect 500,000 times its size, according to an article published in the Proceedings of the National Academy of Sciences in August. p>

The latest physics precursor released this month claims that arXiv arguably slows down frozen ice can achieve "temporary quantum entanglement" in a superconducting qubit (the fundamental unit). Quantum computations of information), then revive it. If the results hold up after examining their peers, this is the first time any living animal has reached a state of quantum entanglement. Thanks to the German zoologist Johann August Ephraim Gauss, who first observed these creatures in 1773 and named them Kleiner Wasserbar ("little blue bear"). In 1777, an Italian biologist named Lazaro Esplanzani named these tardigrades from the Latin Tardigradum ("slow passage").

Then, the ReadingWater bears can replace all of their body fluids with a glass matrix

become. Most animals as small as tardigrades (which are only about 0.02 inches long) don't even have legs, so the Rockefeller team is interested in further examining their movements.

“Tropods are a powerful and obvious way to do this. These are not clumsy things that get stuck in the desert or trash,” says Yasmine Nerudi of the Rockefeller Center for the Study of Physics and Biology, co-author of the PNAS article. And the strategy of much larger insects and arthropods raises many interesting evolutionary questions." We don't know where the movement will end - how to make an efficient little gait, or how soft-body objects should move."

First, Nerudi et al. . But the slides were too soft for tardigrades to move effectively along the surface, and they needed to be able to dig into the surface and apply pressure with their forks, so the researchers replaced the glass slides with gel, then microscopes and set up cameras in the lab to collect hours upon hours of footage of the creatures' movements , which the team reviewed. Advertising Tropods walk much like insects. 500,000 times their size. Zoom in" Look at the tardigra long enough under a light microscope , you can record a wide range of behaviors.” “We didn’t force them to do anything. Sometimes it was so cold they just wanted to walk around the bed. Sometimes “others saw what they liked and ran towards it.”

Read more: Little tardigrades landed by mistake on the moon and may have survived

When blue bears were walking, they usually moved at about half their body length per second, which is twice their body length per second. When they moved with all the gas. The team was surprised to discover that blue bears had no speed specific gait, like horses running on foot.Instead, their movements were very similar to those of insects and arthropods, which move in families AR and faster without changing the pattern of the main steps. land, then four feet on the ground, then three feet on the ground - just like insects and arthropods, despite the evolutionary distance of 20 million years between them. "This means that while there are body structures, body sizes, and environments in which they move, there is something about this coordination plan that works in all of these situations," Nerudi told Live Science. There are two main hypotheses about why this may be true. blue bears, insects, and arthropods may have ancestors that share a neural circuit. On the other hand, organisms may have evolved this fast gait independently through natural selection.

, we have a lot to learn. On the other hand, if arthropods and retards independently meet this strategy, it remains to be seen what makes this strategy so satisfactory for species in different environments. Biomechanics is interesting biomechanics, but latecomers may be able to perform unique quantum masterpieces when they are hibernating, according to Velatko Federal, a quantum physicist at the University of Oxford. . One of the strangest aspects of quantum mechanics is entanglement, as two subatomic particles can be so interconnected that one seems to influence the other, even over long distances. It was so counterintuitive that Albert Einstein called it "terrifying teleworking."

Read more The record-breaking 20 qubits for making a 'Shriren Danger' cat in the lab

Quantum entanglement is a very real phenomenon. Without it, quantum computers would be impossible. In fact, as we reported in 2019, physicists succeeded in setting a record of 20 qubits to obtain a copy of Shrein Dinger's cat in the lab.

A 2018 study showed that some photosynthetic bacteria can be exposed to light photons under the right conditions. (According to Live Science, these conditions occur when the frequency of light condensation in the mirror chamber eventually coincides with the frequency of electrons in the bacteria's photosynthetic molecules.)

But entanglement is never achieved through several IS. Virdal and colleagues' cytokines collected three tardigrades from a roof gutter in Denmark and then froze them to payloads - a process that shrunk by about a third of their normal size. The team then lowered the Tardgrades to a level just above absolute zero.

In Season 1 of <em>Star Trek: Discovery</em>, the strange creature "Ripper" who Navigation" is described in the galactic mycelium as a cousin of the giant Tardgrad "src=" 2112/12805-2.jpg "alt=" <b>Excellent</b> <b>biomechanics,</b> <b>adorable</b> <b>blue</b> bear walkingmay inspire precision robotics. srcset=" 2x"> Zoom / In Season 1 of Star Trek: Discovery, the strange creature "Ripper" was used in their "navigation". "via a galactic fungal network, and they are described as the giant cousin of CBS tardigrades

Then they placed each tardigrade between two capacitor plates of a superconducting circuit (qubit formation). The qubit's resonant frequency changed slightly, however, when it was in contact with a frozen tardigrade. , forming a tungsten qubit hybrid. Finally, Wardal and his colleagues paired this hybrid with the second qubit and engaged them. Several experiments with entangled qubits showed that the change in frequency occurs simultaneously between both qubits and the delayed qubits—just like three entangled qubits. Able to renew latecomers even after trials are completed.” All noted. An organism that maintains its biological function after testing.” Conclusion. “At the same time, tardigrades have survived the harshest and longest-lasting conditions they have ever been exposed to.”

Be woven. Conclusion Werdal et al. met with skepticism For example, Ben Bruabker, a former physicist turned science writer, posted a lengthy Twitter post questioning the findings, while Douglas Knutzelson, a Rice University physicist, wrote in his blog, Nanoscale Views: Examining the topic: / p> < p> This entanglement is not important. The feeling, the concept. If so, you can say by the same argument that the qubits are entangled with a macroscopic silicon chip substrate. The delay does not act as a single quantum object with a small degree of freedom. The dynamics of internal degrees of freedom do not work overdue effectively to separate qubits (which is how qubits deal with many degrees of dynamic freedom which are then traced).

Verdahl defended himself.The team's controversial claim in a recent FQXI podcast.

< p> DOI: PNAS, 2021. 10.1073/pnas.2107289118 (about DOIs). Why doesn't Apple Touch return an ID to iPhone?

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