News tagged with luminous flux
White LEDs with super-high luminous efficacy could satisfy all general lighting needs
(PhysOrg.com) -- Researchers from the Nichia Corporation in Tokushima, Japan, have set an ambitious goal: to develop a white LED that can replace every interior and exterior light bulb currently used in homes ...
Aug 31, 2010 |
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Search results for luminous flux
‘Seeing’ cosmic rays in space
Astronauts have long reported the experience of seeing flashes while they are in space, even when their eyes are closed. Neil Armstrong and Buzz Aldrin both reported these flashes during the Apollo 11 mission, ...
Space & Earth / Space Exploration
Apr 20, 2012 |
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Goldilocks moons
The search for extraterrestrial life outside our Solar System is currently focused on extrasolar planets within the ‘habitable zones’ of exoplanetary systems around stars similar to the Sun. Finding ...
Jan 16, 2012 |
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High-output, high-color-rendering LED lighting devices to be introduced by Sharp
Sharp Corporation has developed and will introduce high-output, high-color-rendering 25W-class LED lighting devices that boast an industry’s highest luminous efficacy of 91 lm/W for light sources such ...
Feb 09, 2011 |
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Powerful LED flash for smartphones
Researchers from Osram Opto Semiconductors have developed an LED chip that makes it possible to offer smaller pocket projectors, vehicle headlights, and cell phone camera flashes. In combination with a new ...
Nov 26, 2010 |
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Surveying the X-ray Sky
(PhysOrg.com) -- Astronomers have only modest laboratories to probe the mysteries of the cosmos. Mostly they have to rely on meticulous and clever observations of remote phenomena.
Jan 11, 2010 |
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Fermi telescope finds gamma-ray galaxy surprises
Back in June 1991, just before the launch of NASA's Compton Gamma-Ray Observatory, astronomers knew of gamma rays from exactly one galaxy beyond our own. To their surprise and delight, the satellite captured ...
Jul 14, 2009 |
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First fuzzy photos of planets outside solar system
(PhysOrg.com) -- Astronomers using the Gemini North telescope and W.M. Keck Observatory on Hawaii's Mauna Kea have obtained the first-ever direct images identifying a multi-planet system around a normal star. ...
Nov 13, 2008 |
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Vega: the star with comets?
The observation of the immediate vicinity of a star other than the Sun has just been carried out for the first time. A debris disc made up of hot (1300 degrees) dust grains, residues of comet evaporation and ...
Apr 12, 2006 |
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Tracking the Riddle of Cosmic Gamma Rays
First simultaneous observation of a gamma-ray burst in the X-ray and in the very high energy gamma ray band. For the first time a gamma-ray burst (GRB) has been observed simultaneously in the X-ray and in the ...
Aug 23, 2005 |
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