News tagged with laser
Lymphatic fluid takes detour
When tumours metastasise, they can block lymphatic vessels, as researchers from ETH Zurich have discovered using a new method. The lymphatic fluid subsequently has to find a new path through the tissue. Such ...
Medical research
2 hours ago |
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Pet lovers take blogging to the next level
When Dexter the cocker spaniel tore a ligament in his hind leg a few weeks ago, he didn't suffer in silence. Instead, his owner blogged about.
Cancer
May 17, 2013 |
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Resetting addicted brain: Laser light zaps away cocaine addiction
By stimulating one part of the brain with laser light, researchers at the National Institutes of Health (NIH) and the Ernest Gallo Clinic and Research Center at UC San Francisco (UCSF) have shown that they ...
Neuroscience
Apr 03, 2013 |
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Using precisely-targeted lasers, researchers manipulate neurons in worms' brains, take control of their behavior
In the quest to understand how the brain turns sensory input into behavior, Harvard scientists have crossed a major threshold. Using precisely-targeted lasers, researchers have been able to take over an animal's ...
Neuroscience
Sep 24, 2012 |
5 / 5 (8) |
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A different view of cancer cells: New study measures physical changes in tumor cells as they become metastatic
Most cancer deaths are caused by metastatic tumors, which break free from the original cancer site and spread throughout the body. For that to happen, cancer cells must undergo many genetic and physical changes.
Cancer
Apr 23, 2013 |
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Japan tooth patch could be end of decay
Scientists in Japan have created a microscopically thin film that can coat individual teeth to prevent decay or to make them appear whiter, the chief researcher said.
Dentistry
Sep 16, 2012 |
4.6 / 5 (45) |
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Laser treatment can make your brown eyes blue
Just like the old Crystal Gayle song, a new laser technology could soon allow you to turn those boring brown eyes of your to a rich and beautiful blue. But you better make sure that blue eyes are what you really want because ...
Other
Nov 04, 2011 |
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New technology measures oxygen in individual red blood cells in real time
In an engineering breakthrough, a Washington University in St. Louis biomedical researcher has discovered a way to use light and color to measure oxygen in individual red blood cells in real time.
Medical research
Mar 25, 2013 |
4 / 5 (1) |
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Novel microscopy method offers sharper view of brain's neural network
Shortly after the Hubble Space Telescope went into orbit in 1990 it was discovered that the craft had blurred vision. Fortunately, Space Shuttle astronauts were able to remedy the problem a few years later ...
Neuroscience
Aug 23, 2012 |
5 / 5 (5) |
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Study shines light on brain mechanism that controls reward enjoyment
What characterizes many people with depression, schizophrenia and some other mental illnesses is anhedonia: an inability to gain pleasure from normally pleasurable experiences.
Neuroscience
Mar 21, 2012 |
4.3 / 5 (6) |
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Researchers develop laser technology to fight cancer
Researchers at the Center for Laser Applications at the University of Tennessee Space Institute in Tullahoma have developed a technology that goes on a "seek and destroy" mission for cancerous tumors. They have harnessed ...
Cancer
Jul 23, 2012 |
4.8 / 5 (5) |
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Researchers invent a quick-release medical tape that minimizes neonatal skin injury
Commercial medical tapes on the market today are great at keeping medical devices attached to the skin, but often can do damage—such as skin tissue tearing—once it's time to remove them.
Medical research
Oct 29, 2012 |
5 / 5 (3) |
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Hand-held device cheaply, quickly diagnosis malaria
A Case Western Reserve University student-led startup aimed at saving lives through faster, better and cheaper malaria diagnosis won the 2013 LaunchTown Entrepreneurship Business Idea Competition at the University of Akron ...
Diseases, Conditions, Syndromes
Apr 23, 2013 |
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Study: Even the smallest stroke can damage brain tissue, impair cognitive function
Blocking a single tiny blood vessel in the brain can harm neural tissue and even alter behavior, a new study from the University of California, San Diego has shown. But these consequences can be mitigated ...
Neuroscience
Dec 16, 2012 |
3.5 / 5 (2) |
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Light switch added to gene tool opens new view of cell development
University of Oregon scientists collaborating with an Oregon company that synthesizes antisense Morpholinos for genetic research have developed a UV light-activated on-off switch for the vital gene-blocking ...
Genetics
Apr 04, 2012 |
5 / 5 (1) |
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Laser
A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.
For more information about Laser, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
