News tagged with light field

Physicists rotate beams of light

Controlling the rotation of light – this amazing feat was accomplished at the Vienna University of Technology (TU Vienna), by means of a ultra thin semiconductor. This can be used to create a transistor ...

Apr 05, 2011
4.4 / 5 (13) 5

Integral spots matter a millisecond from doom

ESA's Integral gamma-ray observatory has spotted extremely hot matter just a millisecond before it plunges into the oblivion of a black hole. But is it really doomed? These unique observations suggest that ...

Mar 24, 2011
4.8 / 5 (12) 10 | with audio podcast

How often do giant black holes become hyperactive?

(PhysOrg.com) -- A new study from NASA's Chandra X-ray Observatory tells scientists how often the biggest black holes have been active over the last few billion years. This discovery clarifies how supermassive ...

Dec 20, 2010
5 / 5 (7) 19 | with audio podcast

Sensor measures yoctonewton forces fast

(PhysOrg.com) -- Physicists at the National Institute of Standards and Technology have used a small crystal of ions (electrically charged atoms) to detect forces at the scale of yoctonewtons. Measurements ...

Sep 01, 2010
4.8 / 5 (13) 0 | with audio podcast

The superwind galaxy NGC 4666 (w/ Video)

(PhysOrg.com) -- The galaxy NGC 4666 takes pride of place at the centre of this new image, made in visible light with the Wide Field Imager on the MPG/ESO 2.2-meter telescope at the La Silla Observatory in ...

Sep 01, 2010
4.5 / 5 (8) 0 | with audio podcast

Sharp-eyed robins can see magnetic fields

(PhysOrg.com) -- It has been known for decades that some birds are able to sense the Earth's magnetic field and set their direction as if following a compass heading, which is an extremely useful ability for ...

Jul 09, 2010 report
4.6 / 5 (43) 15 | with audio podcast