News tagged with radio signals

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Smart meters raise suspicions

Coast to coast, from Maine to Marin County, Calif., the number of homes being outfitted with smart meters that keep a close eye on homeowner electricity use is on the rise. And so is the number of folks who think smart meters ...

Mar 12, 2011
4.5 / 5 (2) 16

Smartphones -- the grip of death

New research by academics in the University of Bristol's Centre for Communications Research has highlighted the problems of reduced sensitivity in wireless communications, along with developing new solutions to overcome the ...

Feb 28, 2011
5 / 5 (1) 0

Nanotubes behave as optical antennae

(PhysOrg.com) -- Just as walkie-talkies transmit and receive radio waves, carbon nanotubes can transmit and receive light at the nanoscale, Cornell researchers have discovered.

Dec 21, 2010
4.8 / 5 (15) 7 | with audio podcast

A new way to weigh planets

An international CSIRO-led team of astronomers has developed a new way to weigh the planets in our Solar System - using radio signals from the small spinning stars called pulsars.

Aug 24, 2010
5 / 5 (13) 4 | with audio podcast

Wal-Mart to roll out smart tags on men's basics

(AP) -- Wal-Mart Stores Inc. is putting electronic identification tags on men's clothing like jeans starting Aug. 1 as the world's largest retailer tries to gain more control of its inventory. But the move is raising eyebrows ...

Jul 23, 2010
3.4 / 5 (5) 1

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