单词 | radiation pressure |
例句 | “I’m making an analogy to the Casimir effect, where you can push plates together with a noticeable radiation pressure from the vacuum,’’ he says. Zero: The Biography of a Dangerous Idea 2000-02-07T00:00:00Z These are more powerful than run-of-the-mill supernovae, which occur when a star runs out of fuel and implodes with a sudden loss of radiation pressure akin to demolishing the supports holding up a roof. Gravitational-Wave Search Resumes after Three Years and Lots of Headaches 2023-05-23T04:00:00Z During the star-forming phases, the radiation pressure from the stars would blast out dust, making the galaxies appear bright and blue. Earliest galaxies challenge ideas about star birth in infant universe 2023-03-27T04:00:00Z Solar radiation pressure is exceedingly weak, however, which is why practical solar sails must be so large. NASA’s Moon-Bound Megarocket Will Send a Spacecraft to an Asteroid, Too 2022-08-23T04:00:00Z Spacecraft powered by novel propulsion methods, such as light sails accelerated by a laser beam from Earth or by solar radiation pressure, are another option, but they involve difficulties of their own. Everything Scientists Know So Far about the First Interstellar Objects Ever Detected 2020-09-30T04:00:00Z A longtime researcher at what is now Nokia Bell Labs in New Jersey, Dr. Ashkin was fascinated by an often-overlooked aspect of light, which exerts a relatively weak force known as radiation pressure. Arthur Ashkin, Nobel-winning physicist who trapped molecules with light, dies at 98 2020-09-28T04:00:00Z The authors also show that radiation pressure noise — the minuscule variation of the force exerted on the kilogram-scale mirrors by light trapped in the cavity — contributes to the motion of the suspended mirrors. Quantum fluctuations have been shown to affect macroscopic objects 2020-06-30T04:00:00Z “We see clear signs of outflowing material,” with radiation pressure sweeping out both hydrogen and dust, he says. Earliest galaxies challenge ideas about star birth in infant universe 2023-03-27T04:00:00Z Indeed, the majority of the study is devoted to examining how radiation pressure from the sun might push on a natural object and contribute to 'Oumuamua’s unexplained acceleration. Sorry, this strange space rock was not sent by aliens to save us 2018-11-06T05:00:00Z Dr Shawyer argues that the EMDrive’s conical shape results in different levels of radiation pressure at each of the cavity’s ends, and therefore a net thrust in the direction of the thin end. Has a British engineer broken the laws of physics? 2016-11-24T05:00:00Z But we see them losing mass through enormous radiation pressure and they are predicted, and often observed, to end their lives with masses much smaller – typically about ten times the sun. Gravitational Waves Discovered: Top Scientists Respond 2016-02-11T05:00:00Z It aims to test a new form of space travel known as solar sailing, in which a large reflective sheet is used to harness the solar radiation pressure produced by the Sun. Watch the first launch of Bill Nye's LightSail spacecraft live at 10:45AM ET 2015-05-20T04:00:00Z However, as mass is absorbed, it will be heated creating radiation pressure, which pushes the mass away from the black hole. Scientists discover black hole so big it contradicts growth theory 2015-02-25T05:00:00Z Thanks to some seriously outside-the-box thinking by a team of scientists and engineers, Kepler has come back to life, its pointing now stabilized by radiation pressure from the Sun, of all things. How Do You Fix a Telescope Millions of Miles From Earth? Quite Well if You're NASA 2014-12-22T05:00:00Z Using solar sail technology - which uses radiation pressure from the sun as a means of propulsion - to power the flight, the idea is that the craft will travel on indefinitely into deep space. Death in the digital age 2014-08-04T04:00:00Z The device works by taking advantage of an acoustic wave’s natural push effect, called radiation pressure. Scientists in Scotland Have Created a Working Tractor Beam 2014-07-30T04:00:00Z These sound waves are produced by radiation pressure inside the stars and they change over the stellar body’s lifetime. Scientists Use Ultrasound To Read The Heartbeats Of Young Stars 2014-07-04T04:00:00Z The demonstration satellite “sailed” through space for 240 days – using solar radiation pressure to get around with the help of a control system – before burning up during re-entry in September that year. ESA's New Gossamer Sail System Aims To Float Dangerous Space Junk To A Fiery Death 2013-12-23T16:12:00Z The mechanism of negative radiation pressure depends on two aspects of a light wave: its group and phase velocities. Bright Idea: New "Tractor Beam" Proposal Relies on Light's Negative Radiation Pressure 2012-06-20T10:15:00.203Z Images from the European Space Agency’s Herschel Space Observatory reveal that the band around Fomalhaut is packed with fine dust, which the star’s radiation pressure continually sweeps into interstellar space. Hubble to revisit exoplanet puzzle 2012-05-23T17:20:39.150Z What the Dundee team was able to demonstrate was an example of negative radiation pressure, otherwise known as pull. Scientists in Scotland Have Created a Working Tractor Beam 2014-07-30T04:00:00Z Every satellite is gradually falling back to Earth due to atmospheric drag and solar radiation pressure. Satellite Falling to Earth? NASA Scientist Puts It Into Perspective 2011-09-22T12:00:31Z Their ships were met by such a blast of cosmic rays as they came toward Thett that the radiation pressure made it almost impossible to advance. Invaders from the Infinite The latest proposal takes advantage of a phenomenon called negative radiation pressure. Bright Idea: New "Tractor Beam" Proposal Relies on Light's Negative Radiation Pressure 2012-06-20T10:15:00.203Z In fact, if their mass were as great as ten times that of the sun, the radiation pressure would so nearly overcome the pull of gravitation that they would be likely to break up. The New Heavens Somehow his hand found it, and the ship reeled suddenly, little jerks, as the code message was flung out in a beam of such tremendous power that the sheer radiation pressure made it noticeable. Invaders from the Infinite Yet in the case of some of the larger stars Eddington calculates that one-half of their mass is supported by radiation pressure, and this against their enormous gravitational attraction. The New Heavens |
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