- #1
CosmicVoyager
- 164
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How "bright" are radio and other EM signals?
Greetings,
I am wondering how "bright" man made EM signals such as radio are. That is, if they were in the visible range, how would they compare to visible light sources? Would they be barely visible? Would they be daytime sky bright in every direction?
I am also wondering how much energy could be harvested from radio, television, cellular, and WiFi signals.
Here is a new device that charges a battery from WiFi signals:
http://www.ohgizmo.com/2010/01/09/ces2010-rca-airnergy-charger-harvests-electricity-from-wifi/
Thanks
Greetings,
I am wondering how "bright" man made EM signals such as radio are. That is, if they were in the visible range, how would they compare to visible light sources? Would they be barely visible? Would they be daytime sky bright in every direction?
I am also wondering how much energy could be harvested from radio, television, cellular, and WiFi signals.
Here is a new device that charges a battery from WiFi signals:
http://www.ohgizmo.com/2010/01/09/ces2010-rca-airnergy-charger-harvests-electricity-from-wifi/
Thanks