News tagged with electromagnetic radiation

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Astronomers reveal a cosmic 'axis of evil'

(PhysOrg.com) -- Astronomers are puzzled by the announcement that the masses of the largest objects in the Universe appear to depend on which method is used to weigh them. The new work was presented at a specialist ...

Jun 30, 2011
4.8 / 5 (17) 23 | with audio podcast

German managers 'keep phones in biscuit tins'

A German chemicals company said on Monday its managers have begun keeping their mobile phones in biscuit tins during meetings in order to guard against industrial espionage.

Jun 27, 2011
not rated yet 3

Experts say cellphones are 'possibly carcinogenic'

(AP) -- A respected international panel of scientists says cellphones are possible cancer-causing agents, putting them in the same category as the pesticide DDT, gasoline engine exhaust and coffee.

May 31, 2011
3 / 5 (9) 21

Andromeda's coat of many colors (w/ video)

(PhysOrg.com) -- ESA's fleet of space telescopes has captured the nearby Andromeda Galaxy, also known as M31, in different wavelengths. Most of these wavelengths are invisible to the eye and each shows a different aspect ...

Apr 27, 2011
3.7 / 5 (3) 6 | with audio podcast

Radio Waves: Alternative Power Source

(PhysOrg.com) -- 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 ...

Jul 20, 2010 weblog
4.2 / 5 (13) 2 | with audio podcast

Scientists create artificial mini 'black hole'

(PhysOrg.com) -- Scientists from China have built a device that can trap and absorb microwaves coming from all directions with a 99% absorption rate - a property that makes the device simulate, to some extent, ...

Jun 03, 2010 report
3.9 / 5 (16) 13 | with audio podcast