News tagged with lens

Distorting the lens

(PhysOrg.com) -- One of the most bizarre predictions of Einstein's Theory of General Relativity is the existence of back holes, objects that are so dense that not even light can escape from their gravitational ...

Feb 09, 2012 5 / 5 (3) 5

Sony unveils new, high-speed XQD memory cards

Giving photo enthusiasts and professional photographers a new level of speed and performance, the new Sony XQD memory cards support the recently adopted XQD specification for high-speed, high-performance digital image capture.

Jan 09, 2012 not rated yet 1

Listening to the stars

It is almost night on the island of Puerto Rico. Astronomer Joanna Rankin raises her head toward the sky. A few of the brightest stars shine through blue cracks in a ragged dome of gray clouds. To her back, ...

Dec 01, 2011 5 / 5 (4) 3 | with audio podcast

A serendipitous gravitational lens

(PhysOrg.com) -- The path traveled by a light beam will bend in the presence of matter. This remarkable prediction, reached by Einstein in his theory of general relativity, was confirmed by observations of ...

Nov 21, 2011 4.3 / 5 (6) 3 | with audio podcast