As represented by conventional radiograph, radiological images provide only black and white figures in 2D space. The situation is basically the same for Single photon emission tomography (SPECT) and positron emission tomography ...
Engineering
May 22, 2017
0
4
A blazar is a galaxy whose central nucleus is bright at wavelengths from the low energy radio band to high energy gamma rays (each gamma ray photon is over a hundred million times more energetic than the X-rays seen by the ...
Astronomy
Jan 30, 2017
0
36
(Phys.org)—A team of researchers from Columbia University in New York has found that all of the Marshall Islands involved in nuclear tests by the U.S. are now habitable, except for Bikini Atoll. In their paper published ...
Last February a team of astronomers reported detecting an afterglow from a mysterious event called a fast radio burst, which would pinpoint the precise position of the burst's origin, a longstanding goal in studies of these ...
Astronomy
Apr 4, 2016
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1166
Scientists from the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have set out to help build the world's first total-body positron emission tomography (PET) scanner, a medical imaging device ...
General Physics
Oct 21, 2015
1
73
A terrifying few moments flying into the top of an active thunderstorm in a research aircraft has led to an unexpected discovery that could help explain the longstanding mystery of how lightning gets initiated inside a thunderstorm.
Plasma Physics
May 13, 2015
31
8951
Seyfert galaxies are similar to spiral galaxies except that they have extraordinarily prominent, bright nuclei, sometimes as luminous as 100 billion Suns. Their huge energies are thought to be generated as matter falls towards ...
Astronomy
Jan 19, 2015
0
143
Highly-detailed radio-telescope images have pinpointed the locations where a stellar explosion called a nova emitted gamma rays, the most energetic form of electromagnetic waves. The discovery revealed a probable mechanism ...
Astronomy
Oct 8, 2014
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0
Twenty years ago, Philip Platzman and Allen Mills, Jr. at Bell Laboratories proposed that a gamma-ray laser could be made from a Bose-Einstein condensate (BEC) of positronium, the simplest atom made of both matter and antimatter ...
General Physics
May 1, 2014
0
1
Intelligent telescopes designed by Los Alamos National Laboratory got a front row seat recently for an unusual birth.
Astronomy
Nov 21, 2013
8
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