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Unless you’re a physicist or an engineer, there really isn’t much reason for you to know about partial differential equations. I know. After years of poring over them in undergrad while studying mechanical engineering, I’ve never used them since in the real world.

But partial differential equations, or PDEs, are also kind of magical. They’re a category of math equations that are really good at describing change over space and time, and thus very handy for describing the physical phenomena in our universe. They can be used to model everything from planetary orbits to plate tectonics to the air turbulence that disturbs a flight, which in turn allows us to do practical things like predict seismic activity and design safe planes.

The catch is PDEs are notoriously hard to solve. And here, the meaning of “solve” is perhaps best illustrated by an example. Say you are trying to simulate air turbulence to test a new plane design. There is a known PDE called Navier-Stokes that is used to describe the motion of any fluid. “Solving” Navier-Stokes allows you to take a snapshot of the air’s motion (a.k.a. wind conditions) at any point in time and model how it will continue to move, or how it was moving before.

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Only a few years ago, scientists the world over celebrated as the first-ever gravitational waves were detected—confirming a long-held scientific theory and opening up an entirely new field of research.

Now, the international research team responsible for detecting has announced a further 39 gravitational wave events, bringing the total number of confirmed detections to 50.

The Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo Collaborations, which include researchers from the University of Portsmouth, have today published a series of papers that record events including the mergers of binary black holes, binary stars and, possibly, neutron star-black holes.

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The result is a science park and university campus that offers degrees at all levels. It hosts more than 300 labs and advanced research equipment, such as the SOLEIL synchrotron. About 100 companies and 6 of France’s public research organizations, including the national research agency CNRS, have a presence there. That combination — of the university with national facilities — is powerful, says Price. The park accounts for an estimated 15% of France’s public and private research. About 30,000 people work or study at Saclay, and this is projected to rise to 80,000 by 2030.

The lab has no overall scientific project, and has added an extra layer of management, says Fayard, although he concedes that the coronavirus pandemic has complicated the lab’s first months. “I fear the lab will have to work hard not to fall between two stools — it is too big to be efficient, but not big enough to invest alone in major local infrastructures.”

But Oliver Brüning, a particle physicist at CERN, Europe’s particle physics lab near Geneva, Switzerland, who spent time working at LAL, says he thinks the new lab has greater weight and influence than did LAL alone.

Saclay’s second-largest lab, the Institute for Integrative Biology of the Cell (I2BC), covers five biology disciples, including structural, cell and genome biology. More than 700 people, employed by national research agencies and universities, work there. Director Frédéric Boccard says it is too soon to judge whether the Paris-Saclay model is a success for research. “But it is extremely promising.” Boccard adds that having a critical mass of technological equipment means that the lab has attracted collaborators from all over France and many other countries, including Germany, the United States and Russia.

Continue reading “How France overcame the odds to build a research mega-campus” | >

Shrinking Down

In a bid to sell more than “several dozen” models, the company is now working on a more accessible, miniature version that records and transmits holograms without taking up the entire height of a room. And, company founder David Nussbaum tells TechCrunch, it comes with new subscription features.

“The minis will be bundled with content like Peloton and Mirror bundled with very specific types of content,” Nussbaum said. “We are in conversations with a number of extremely well-known content creators where we would bundle a portal but will also have dedicated and exclusive content.”

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You can buy Universe Sandbox 2 here: http://amzn.to/2yJqwU6
Or get a shirt: https://teespring.com/stores/whatdamath

Hello and welcome! My name is Anton and in this video, we will talk about some of the new discoveries about Venus Flytrap — the most well known carnivorous plant.
Little Shop of Horrors: https://upload.wikimedia.org/wikipedia/commons/8/87/TheLittl…ebmhd.webm
Video used: https://www.youtube.com/watch?v=K-fFqCkZfGE
Paper: https://www.nature.com/articles/s41477-020-00773-1

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Astronomer Eamonn Kerins with the University of Manchester has developed an approach to looking for intelligent extraterrestrial beings on other planets that involves using game theory. He has written a paper describing his ideas and has uploaded it to the arXiv preprint server.

The current approach to looking for on other planets is basically two-pronged. One approach involves scanning the skies looking for signals from space that could be created by intelligent beings. The other involves scanning the sky for evidence of exoplanets that appear to be habitable. Kerins suggests that a way to meld the two approaches into a logical systematic search for is to use some of the logic inherent in game theory.

Kerins starts by noting that it seems possible that the reason scientists on Earth have not discovered signals from beings on other planets is because they are not sending any, fearing that doing so might draw the attention of unfriendly adversaries. He further suggests that if others are out there, they might be listening just as intently as we are. This leads to the SETI paradox, in which everyone is listening but no one is sending. And it also leads to the question of how such a paradox could be resolved. He notes that suggests that both parties should agree that the party with more access to information should be the one that transmits first to the other.

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