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Search results for intensity of light
Adjusting acidity with impunity
Chemistry / Analytical Chemistry
Dec 22, 2009 |
4.5 / 5 (2) |
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(PhysOrg.com) -- How do individual cells or proteins react to changing pH levels? Researchers at the MESA+ Institute for Nanotechnology at the University of Twente, The Netherlands, have developed a technique ...
Accelerators and Light Sources of Tomorrow (Part 1: From Linacs to Lasers)
Dec 22, 2009 |
4.7 / 5 (6) |
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From their humble beginnings as offshoots of the ordinary electric light bulb, particle accelerators have evolved in surprising directions. Among the most productive and promising developments have been light ...
Physicists propose quantum entanglement for motion of microscopic objects
Dec 21, 2009 |
4.4 / 5 (20) |
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Researchers at the California Institute of Technology (Caltech) have proposed a new paradigm that should allow scientists to observe quantum behavior in small mechanical systems.
Herschel Space Telescope uncovers the sources of the Cosmic Infrared Background
Dec 16, 2009 |
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(PhysOrg.com) -- Using first observations with the PACS Instrument on board ESA’s Herschel Space Telescope, scientists from the Max Planck Institute for Extraterrestrial Physics and other institutions have ...
Miracle light: Can lasers solve the energy crisis?
Dec 15, 2009 |
4.4 / 5 (14) |
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Next year will mark the 50th birthday of the laser, one of the most productive and widely used mega-inventions of the last century. Scientists hope that 2010 also will see the launch of laser technology's greatest challenge: ...
Moderate-to-heavy exercise may reduce risk of stroke for men
Medicine & Health / Neuroscience
Nov 23, 2009 |
5 / 5 (1) |
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Men who regularly take part in moderate-to-heavy intensity exercise such as jogging, tennis or swimming may be less likely to have a stroke than people who get no exercise or only light exercise, such as walking, golfing, ...
Tapering a Free-Electron Laser to Extract More Juice
Nov 20, 2009 |
4 / 5 (1) |
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(PhysOrg.com) -- Researchers from the NSLS and Science Applications International Corporation (SAIC) have demonstrated a technique that could be used to significantly improve the quantity and quality of light ...
Laser therapy can aggravate skin cancer
Nov 20, 2009 |
2 / 5 (1) |
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High irradiances of low-level laser therapy (LLLT) should not be used over melanomas. Researchers writing in the open access journal BMC Cancer studied the pain relieving, anti-inflammatory 'cold laser', finding that it cau ...
Maps Unveil the Source of Starburst Galaxy's Winds
Nov 18, 2009 |
5 / 5 (8) |
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(PhysOrg.com) -- A research group at Kyoto University has discovered that shocks are the primary energy sources that excite the galactic wind region of starburst galaxy NGC 253. Their images of the center ...
Swirling clouds over the South Pacific
Space & Earth / Space Exploration
Nov 17, 2009 |
3.8 / 5 (4) |
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(PhysOrg.com) -- Rosetta's OSIRIS imaging system spotted an anticyclone over the South Pacific on the morning of 13 November. The images show the scene roughly as a human eye would see it.
Playing active video games can equal moderate intensity exercise
Nov 16, 2009 |
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Active Wii sports video games and some Wii fit activities may increase adults' energy expenditure as much as moderately intense exercise, according to research presented at the American Heart Association's Scientific Sessions ...
A bubbling ball of gas (w/ Video)
Space & Earth / Space Exploration
Nov 11, 2009 |
4.9 / 5 (18) |
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The Sun is a bubbling mass. Packages of gas rise and sink, lending the sun its grainy surface structure, its granulation. Dark spots appear and disappear, clouds of matter dart up - and behind the whole thing ...
NXP Sets New Benchmarks for LED Drivers
Nov 05, 2009 |
4 / 5 (1) |
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NXP Semiconductors today announced three major developments in its portfolio of mains connected LED driver solutions: the success of its SSL2101 LED driver IC in matching LED lifetimes in an accelerated lifetime test; the ...
Carbon Atmosphere Discovered on Neutron Star
Nov 04, 2009 |
4.7 / 5 (19) |
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(PhysOrg.com) -- Evidence for a thin veil of carbon has been found on the neutron star in the Cassiopeia A supernova remnant. This discovery, made with NASA's Chandra X-ray Observatory, resolves a ten-year ...
Compressing photonic signals for greater bandwidth
Nov 03, 2009 |
4.3 / 5 (7) |
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Cornell researchers have developed an ingenious method to time-compress optical signals. The process could enable optical communication systems to carry many more bits per second or could also be used to generate ...
