News tagged with light field

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

How does the proton get its spin?

(PhysOrg.com) -- At a meeting this week of the American Physical Society in Washington, MIT Associate Professor of Physics Bernd Surrow reported on new results from the STAR experiment at the Relativistic ...

Feb 17, 2010
4.2 / 5 (34) 16 | with audio podcast