To convert meters to miles, you multiply by 0.0006214, so the speed of light is also 186,291 miles per second. Hz is 3.3199 meters or about 10 feet 10 inches long. Amplitude Amplitude is the maximum absolute value of a periodic curve mesured along its vertical axis. It's easy to understand if you look at the picture. Amplitude is a measure of wave intensity, or strength.
Waves travel at a constant speed, but their amplitude diminishes with time and distance.
This is called attenuation. According to one study , by the time KDVS's signal reaches San Francisco, 66.18 miles away, it has attenuated to 5.00 kilowatts. The key is the conversion of electromagnetic radiation energy to electrical energy. First predicted in 1948, the vacuum energy has been linked to a number of experimental observations. Examples include the Casimir effect, Van der Waal forces, the Lamb-Retherford Shift, explanations of the Planck blackbody radiation spectrum, the stability of the ground state of the hydrogen atom from radiative collapse, and the effect of cavities to inhibit or enhance the spontaneous emission from excited atoms.