Recent content by pcxmac

Dont forget 208V (3 phase-US) http://en.wikipedia.org/wiki/Three_phase_power

how about the viscosity of the water, the forces are man, gravity, water (resistance). The man burns calories, the Earth has gravity, and water acts as resistance to man going from one end to the other. I would think it possible to derive more specific forces from those three. buoyancy would be...

I think solar is cool. Combustion has been around for a while, I believe a creative mind is needed to "seek out new...possibilities" (StarTrek TNG). If only there were a way to overcome the conservation of energy / mass. I believe effeciency will be the more short term answer. Imagine all...

Sound Travels through air / gas, liquid, even solid materials. Radio frequencies choose the medium which allows them to travel at the speed of light, elctro-magnetic waves. Earthquakes travel in waves (energy propagation). Learn about how HF travels through the ionosphere. Its all about the wave...

look up transducer and antenna to see how a wire-line signal becomes radiated. key items of interest are - E & H Fields, Transmission Line, Transducer, Antenna. Another transducer of interest could be a microphone, taking the physical phenomenon of sound waves, and converting it into an...

think difference in potential see http://en.wikipedia.org/wiki/Decibels for more info on decibels electricity can be measure in Volts or potential RF signals can be measured in dB or decibels. which is a logarithmic scale, used to represent the strength (potential) of a signal. RF is...