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Archive for the ‘physics’ category: Page 238

Jun 18, 2019

Liu Cixin’s War of the Worlds

Posted by in categories: computing, physics

The trilogy’s success has been credited with establishing sci-fi, once marginalized in China, as a mainstream taste. Liu believes that this trend signals a deeper shift in the Chinese mind-set—that technological advances have spurred a new excitement about the possibilities of cosmic exploration. The trilogy commands a huge following among aerospace engineers and cosmologists; one scientist wrote an explanatory guide, “The Physics of Three Body.” Some years ago, China’s aerospace agency asked Liu, whose first career was as a computer engineer in the hydropower industry, to address technicians and engineers about ways that “sci-fi thinking” could be harnessed to produce more imaginative approaches to scientific problems.


A leading sci-fi writer takes stock of China’s global rise.

Jun 14, 2019

Next Month’s Total Solar Eclipse Will Pass Right Over a Space Observatory

Posted by in categories: physics, space

Next month, a total solar eclipse will pass over a slice of the South Pacific, Chile, and Argentina—and directly over an observatory in the Andes run by the National Science Foundation.

Astronomers and physicists are now preparing the experiments they plan to run during the eclipse. As with past eclipses, these experiments will focus on observing the Sun, as well as the effects of eclipses on Earth.

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Jun 13, 2019

The illusion of time

Posted by in category: physics

Andrew Jaffe probes Carlo Rovelli’s study arguing that physics deconstructs our sense of time.

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Jun 11, 2019

The Present Phase of Stagnation in the Foundations of Physics Is Not Normal

Posted by in category: physics

The problem is loads of wrong predictions from theoretical physicists. Photograph by Inga Nielsen / ShutterstockNothing is moving in…

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Jun 10, 2019

How To Build A Real Lightsaber

Posted by in categories: energy, physics, weapons

As even casual Star Wars fans will know, lightsabers are probably the coolest weapon ever to make an appearance on the big screen. Lightsaber fights are so elegant that they are almost hypnotic and, even though not all of us might have a strong enough flow of Force running through our veins, a lightsaber in the right hand is by far the deadliest weapon to be found in the universe.

The idea behind a lightsaber is simple genius: a light-weight and immensely powerful tool that uses a blade of energy to not only slice up disciples of the Dark Side in a single blow but also act as an effective shield against laser blasts. So why don’t we have working lightsabers in real life? Surely physicists must be smart enough (and big enough Star Wars fans) to be able to produce one of these incredible objects.

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Jun 8, 2019

Priority to US09/443,527

Posted by in categories: computing, physics

A gravitational wave generating device comprising an energizing means such as magnetrons, which act upon energizable elements such as film bulk acoustic resonators or FBARs. A computer that controls the magnetrons’ phase. A gravitational wave generation device that exhibits directivity and forms a gravitational-wave beam. The utilization of a medium in which the gravitational wave speed is reduced in order to effect refraction of the gravitational wave and be a gravitational wave lens. A gravitational wave generator device that can be directed in order to propel an object by its momentum or by changing the gravitational field nearby the object to urge it in a preferred direction and be a propulsion means.

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Jun 7, 2019

The Elusive Theory of Everything

Posted by in category: physics

Physicists have long sought to find one final theory that would unify all of physics. Instead they may have to settle for several.

  • By Stephen Hawking, Leonard Mlodinow on October 1, 2010

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Jun 6, 2019

Physicists Debate Hawking’s Idea That the Universe Had No Beginning

Posted by in categories: physics, space

A recent challenge to Stephen Hawking’s biggest idea — about how the universe might have come from nothing — has cosmologists choosing sides.

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Jun 6, 2019

Black Hole Computers

Posted by in categories: computing, cosmology, physics

In keeping with the spirit of the age, researchers can think of the laws of physics as computer programs and the universe as a computer.

  • By Seth Lloyd, Y. Jack Ng on April 1, 2007

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Jun 6, 2019

Black Hole Propulsion as Technosignature

Posted by in categories: cosmology, physics

When he was considering white dwarfs and neutron stars in the context of what he called ‘gravitational machines,’ Freeman Dyson became intrigued by the fate of a neutron star binary. He calculated in his paper of the same name (citation below) that gradual loss of energy through gravitational radiation would bring the two neutron stars together, creating a gravitational wave event of the sort that has since been observed. Long before LIGO, Dyson was talking about gravitational wave detection instruments that could track the ‘gravitational flash.’

Image: Artist conception of the moment two neutron stars collide. Credit: LIGO / Caltech / MIT.

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