Tech.view: From farm to fork Oct 10, 2009
The attraction of these tiny passive chips, which emit a stream of digital data only when energised by a radio beam, is that it is not necessary to see a tag to read it. Unfortunately, though simple RFIDs cost less than 30 cents apiece, they are still way too expensive for tagging a bag of cut lettuce or a bunch of grapes. (The Economist)
Radio quiet gamma-ray pulsars solve mystery Jul 7, 2009
If the radio beam misses the Earth, the pulsar cannot be detected by radio telescopes, but Fermis ability to detect so many radio-quiet gamma-ray pulsars indicates that the gamma-rays are emitted in a beam that is wider and more fan-like than the radio beam ... "Note that not all of the 16 pulsars discovered by way of their gamma-ray emission are necessarily radio quiet (in the sense that the radio beam doesn't intercept Earth)," he says. (Astronomy Now Online)
Radio-quiet Gamma-ray Pulsars Discovered Jul 3, 2009
If the radio beam misses the Earth, the pulsar cannot be detected by radio telescopes. Fermi's ability to detect so many radio-quiet gamma-ray pulsars indicates that the gamma-rays are emitted in a beam that is wider and more fan-like than the radio beam. (Science Daily)
Satellite may send energy to Valley Apr 16, 2009
And that radio beam coming from space. Spirnak said it will pose no danger to people on the ground or even to aircraft that fly through it. (Fresno Bee)
