The world’s greatest clockmaker sent a clock to the new world, and everything went haywire. The reason why will shock you.
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Category: physics – Page 268
Researchers from Indiana University and the California Institute of Technology say the new simulations could help us better understand major astrophysical phenomena, such as gravitational waves.
‘The strength of the neutron star crust, especially the bottom of the crust, is relevant to a large number of astrophysics problems, but isn’t well understood,’ says Matthew Caplan, a postdoctoral research fellow at McGill University.
Neutron stars are the product of supernovas, and are extremely dense.
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https://paper.li/e-1437691924#/
Recently, we might often have heard of the term “technological singularity” with the hypothesis that accelerating progress in technological inventions will cause a runaway effect that will make ordinary humans someday be overtaken by artificial intelligence.
The term seems to be appeared very contemporary to this technology era but in fact, thought about singularity has a long philosophical history.
In 1958, Stanish Ulam, a Polish American scientist in the fields of mathematics and nuclear physics, first used the term “singularity” in a conversation with John von Neumann, Hungarian-American mathematician, physicist, computer scientist, and polymath, about the technological progress.
The move means grantees from these 11 funders—which include the national funding agencies in the United Kingdom, the Netherlands, and France as well as Italy’s National Institute for Nuclear Physics—will have to forgo publishing in thousands of journals, including high-profile ones such as Nature, Science, Cell, and The Lancet, unless those journals change their business model. “We think this could create a tipping point,” says Marc Schiltz, president of Science Europe, the Brussels-based association of science organizations that helped coordinate the plan. “Really the idea was to make a big, decisive step—not to come up with another statement or an expression of intent.”
Bold move is intended to trigger open-access tipping point.
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Jocelyn Bell Burnell was a PhD student at Cambridge University some five decades ago when she made an astronomical discovery while reviewing data from a radio telescope: faint, repeating pulses of radio waves.
These signals came to be known as pulsars, a type of neutron star described by Scientific American as “a city-sized collapsed core of a massive sun that is made of degenerate matter and throws off lighthouse-like beams of radio waves.” The discovery was a leap forward: It pointed to the existence of black holes, provided evidence for gravitational waves, and much more.
It also yielded a 1974 Nobel Prize—but not for Bell Burnell. Instead, the prize went to Antony Hewish, Bell Burnell’s PhD supervisor, the Guardian reports.
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When two neutron stars collided in August of 2017, the resulting black hole emitted a jet of cosmic material at extremely high speed.
As reported by the Inquisitr in June 2018, the collision of two neutron stars in the cosmic event known as GW170817, perceived by humans in August of last year, appears to have created a black hole. It also appears to have created a jet of superfast material, detected and measured by a collection of National Science Foundation radio telescopes, and the results of those measurements seemed to show the jet moving at nearly four times the speed of light, an impossibility in our current understanding of the laws of physics.
In observations less than half a year apart, the jet seemed to cover a distance greater than two light years. Since a light year is defined as the distance light can travel through a vacuum in a year, that would indicate that the jet was hurtling toward Earth at nearly four times the speed of light, according to Space.com.
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Rather, they looked like whirlpools in space-time. In the universe, every part of space flowed, churned, trembled between madness and horror like fiery flames that emitted only frost. The Sun and the planets and all substance and existence seemed to be only hallucinations produced by the turbulence of space-time.
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We are undeniably using up what little remains of Earth’s petroleum, and because of that, it’s getting expensive. To reduce fuel costs, shipping companies are turning back to sailboats. Yes, seriously. Sailboats. But they don’t look like any sails you’ve seen before.
You know sails – most of the time big rectangle things, sometimes big triangle things, almost always (but not always-always) made out of cloth. But while those things in the top gif don’t look like your normal sails, that’s what they are. They just don’t work like any sail you’ve ever seen before.
Most sails you’ve seen rely on the wind directly acting against them to provide propulsion. But these new types of sails, known as “rotor sails” rely on a physics principle called the Magnus Effect. Here, I’ll let the people with delightfully thick Finnish accents from Norsepower, the company that makes them, explain it:
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