(Phys.org) —How much light has been emitted by all galaxies since the cosmos began? After all, every photon (particle of light) from ultraviolet to far infrared wavelengths ever radiated by all galaxies that ever existed ...
Astronomy
May 24, 2013
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In 1960, legendary physicist Freeman Dyson published his seminal paper "Search for Artificial Stellar Sources of Infrared Radiation," wherein he proposed that there could be extraterrestrial civilizations so advanced that ...
Astronomy
Sep 21, 2023
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Nanoparticles are being developed to perform a wide range of medical uses - imaging tumors, carrying drugs, delivering pulses of heat. Rather than settling for just one of these, researchers at the University of Washington ...
Bio & Medicine
Jul 27, 2009
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Vanderbilt mechanical engineering professors Deyu Li and Josh Caldwell are part of a team of researchers who have discovered a new heat dissipation channel using phonon polaritons that could have extensive implications for ...
Nanophysics
Nov 13, 2023
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One of the biggest comet findings coming out of the amazing images and data taken by the University of Maryland-led EPOXI mission as it zipped past comet Hartley 2 last week is that dry ice is the 'jet' fuel for this comet ...
Space Exploration
Nov 10, 2010
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A team of researchers from Columbia and Howard Universities in the U.S. and Peking University in China has developed a kind of colored double-layered paint that reflects heat. In their paper published in the journal Science ...
(PhysOrg.com) -- Solar cells, the heart of the photovoltaic industry, must be tested for mechanical strength, oxidized, annealed, purified, diffused, etched, and layered.
Energy & Green Tech
Oct 25, 2011
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Most sunlight striking the Earth is absorbed by its surfaces, oceans and atmosphere. As a result of this warming, infrared radiation is emitted constantly all around us-estimated to be millions of Gigawatts per second. A ...
Optics & Photonics
Feb 5, 2018
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I am often asked how carbon dioxide can have an important effect on global climate when its concentration is so small—just 0.041% of Earth's atmosphere. And human activities are responsible for just 32% of that amount.
Environment
Sep 13, 2019
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39
Even small telescopes can make big discoveries. Though the KELT North telescope in southern Arizona carries a lens no more powerful than a high-end digital camera, it's just revealed the existence of two very unusual faraway ...
Astronomy
Jun 13, 2012
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