News tagged with intensity of light


Polarized light pollution leads animals astray

Polarized light pollution leads animals astray

Space & Earth / Environment

created Jan 07, 2009 | popularity 3.7 / 5 (3) | comments 0

Human-made light sources can alter natural light cycles, causing animals that rely on light cues to make mistakes when moving through their environment. In the journal Frontiers in Ecology and the Environment, a coll ...





Search results for intensity of light


Adjusting acidity with impunity

Adjusting acidity with impunity

Chemistry / Analytical Chemistry

created Dec 22, 2009 | popularity 4.5 / 5 (2) | comments 0

(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 ...


Part 1: From Linacs to Lasers: Accelerators and Light Sources of Tomorrow

Accelerators and Light Sources of Tomorrow (Part 1: From Linacs to Lasers)

Physics / General Physics

created Dec 22, 2009 | popularity 4.6 / 5 (5) | comments 2

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

Physics / Quantum Physics

created Dec 21, 2009 | popularity 4.5 / 5 (17) | comments 12

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

Herschel Space Telescope uncovers the sources of the Cosmic Infrared Background

Space & Earth / Astronomy

created Dec 16, 2009 | popularity 5 / 5 (12) | comments 4

(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?

Technology / Energy

created Dec 15, 2009 | popularity 4.4 / 5 (14) | comments 4

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

created Nov 23, 2009 | popularity 5 / 5 (1) | comments 0

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

Tapering a Free-Electron Laser to Extract More Juice

Physics / General Physics

created Nov 20, 2009 | popularity 4 / 5 (1) | comments 0

(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

Medicine & Health / Cancer

created Nov 20, 2009 | popularity 2 / 5 (1) | comments 1

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

Maps Unveil the Source of Starburst Galaxy's Winds

Space & Earth / Astronomy

created Nov 18, 2009 | popularity 5 / 5 (8) | comments 0

(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

Swirling clouds over the South Pacific

Space & Earth / Space Exploration

created Nov 17, 2009 | popularity 3.8 / 5 (4) | comments 0

(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.



List of search results for intensity of light