Science a GoGo's Home Page Forums General Discussion General Science Discussion Forum Harvested TV, radio signals power devices

Broadcast power has been a staple of science fiction practically forever. The main problem with it is to get the power density at the power receiver up to a reasonable level. The power density required is going to be in kilowatts per square meter (kW/m^2) range. Of course the power density used by the various communications devices we are familiar with run more in the microwatts per square meter. If we lived in an environment where the power density was up in the kW/m^2 range it would be something like living in a microwave oven. I don't think I want to move into a microwave. The only source that gets into that general range is sunlight. There is just no way to get larger amounts of power out of intentionally transmitted signals.

Bill Gill