Among the most astounding, unexpected, and important achievements of the past century (or even more) have been the discoveries of dark matter and dark energy, collectively dubbed the "dark sector."
General Physics
Sep 8, 2009
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Even Albert Einstein might have been impressed. His theory of general relativity, which describes how the gravity of a massive object, such as a star, can curve space and time, has been successfully used to predict such astronomical ...
General Physics
Jul 20, 2009
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(PhysOrg.com) -- Something in our galactic neighborhood seems to be producing large numbers of high-energy electrons, according to new data gathered by the Fermi Gamma-ray Space Telescope. The electrons could be coming from ...
General Physics
May 5, 2009
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(PhysOrg.com) -- Theorists have long wondered how massive stars--up to 120 times the mass of the Sun--can form without blowing away the clouds of gas and dust that feed their growth. But the problem turns out to be less mysterious ...
Astronomy
Jan 15, 2009
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There are many ways to store data—digitally, on a hard disk, or using analog storage technology, for example as a hologram. In most cases, it is technically quite complicated to create a hologram: High-precision laser technology ...
Optics & Photonics
Mar 18, 2024
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Correcting 50-year-old errors in the math used to understand how electromagnetic waves scatter electrons trapped in Earth's magnetic fields will lead to better protection for technology in space.
Space Exploration
Mar 4, 2024
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Theoretical physicist Farokh Mivehvar has investigated the interaction of two collections of atoms emitting light inside a quantum cavity—an optical device consisting of two high-quality, tiny mirrors facing each other ...
Optics & Photonics
Feb 19, 2024
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The recent release of the wastewater from Japan's Fukushima nuclear disaster stirred apprehension regarding the health implications of radiation exposure. Classified as a Group 1 carcinogen, ionizing radiation has long been ...
Cell & Microbiology
Feb 14, 2024
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When did the universe start? When and how did the first stars and galaxies form? What is the fate of the universe?
Thermal radiation is electromagnetic radiation emitted by all objects with temperature and most representatively, there is the solar radiation spectrum that enters the Earth and causes the greenhouse effect.
Nanophysics
Feb 5, 2024
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