07/07/2010

Tunable quantum cascade laser

(PhysOrg.com) -- One of the issues associated with lasers is their tunability. In many cases, if you want to produce a particular wavelength, you have to build a laser to accomplish this. In order to get another wavelength, ...

Image: A Closer Look at Daphnis

(PhysOrg.com) -- NASA's Cassini spacecraft has captured the closest images of Saturn's moon Daphnis to date.

Wealthier, but not necessarily healthier

One of the most famous and influential mantras of Barack Obama’s chief economic adviser - that wealthier nations are also healthier - has been called into question by a new study.

How birds prepare for war

(PhysOrg.com) -- Just as human soldiers show greater solidarity when entering combat zones, new research from the University of Bristol has demonstrated that birds also increase their affiliative behaviour in situations where ...

Lone whales shout to overcome noise (w/ Video)

Just like people in a bar or other noisy location, North American right whales increase the volume of their calls as environmental noise increases; and just like humans, at a certain point, it may become too costly to continue ...

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