News tagged with radio waves

Hubble traps galactic fireflies

(—Luminous galaxies glow like fireflies on a dark night in this image snapped by the NASA/ESA Hubble Space Telescope. The upper central galaxy in this image is a gigantic elliptical galaxy designated 4C 73.08. ...

dateNov 18, 2012 in Astronomy
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Radio Waves: Alternative Power Source

( -- Researchers at Duke University are harvesting ambient radio waves to power small microprocessor devices that consume very little energy. Devices such as sensors that monitor critical environmental changes ...

dateJul 20, 2010 in Engineering weblog
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