2006-09-29 13:55:06 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Physics
a fm radio wave is an electromagnetic wave and travels a 3.0 * 10 ^ 8 m/s (light speed)
2006-09-29 14:03:15 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Fast Fm Radio
2017-01-14 08:44:11 · answer #2 · answered by ? 4 · 0⤊ 0⤋
just like every other photon, photons with the varying rotational frequency that carry an FM radio transmission. travel at the same speed as all other photons in free space. C also called the speed of light in a vacuum.
Reflective, refractive, and all other interactions between photons in the C clamped state and matter vary along curves plotted along frequency. photons with tiny orbits spin faster, and so each individual photon has a higher probability of hitting an electron. and photons with somewhat larger orbits, or frequencies each have a lower probability.
We can change the odds, by arranging bits of matter in space at multiples of the sixe of the photon's orbit. This is called antenna design.
for calculating antenna size, i believe C of 300 million meters per second is used. all i know is that wi fi is about 3.5 inches.
for relating it to miles, its 186,000 miles per second. in a vacuum.
inside coax, the speed appears to be reduced by a figure called VELOCITY OF PROPIGATION which is a fraction about .65 and is the percentage of C.that it seems to travel. slower. Actually, light is always travelling at C, the slowing is actually the distortion of time by the matter involved, whether it is air, glass, every material appears to slow light down, and to slow smaller, faster rotating photons a lot more than wide, slower rotating photons. This results in rainbows. It is also the reason your FM radio photons will propigate better than UHF, And WI-FI is even smaller. which is considered more LINE of SIGHT.
There may be a lower limit to the size of a photon orbit, the smallest we know of are X-rays. THer is no physical reasopn for an upper limit to the size of photon orbits, submarines use very low frequencies talking to five mile long antennas inside moutains
Even waving your arm at 120 beats per second generates photons.
2006-09-29 14:54:27 · answer #3 · answered by disco legend zeke 4 · 0⤊ 0⤋
Nice...100% hit on all answers so far. Radio is just another part of the light spectrum. All light waves travel the same fastivity (yep...fastivity). 186,292 miles per second.
2006-09-29 14:56:27 · answer #4 · answered by Professor 3 · 0⤊ 0⤋
It actually depends on the medium. In air, 3*10^8 m/s.
2006-09-29 14:04:19 · answer #5 · answered by Anonymous · 0⤊ 0⤋
all radio waves travel at the speed of light, or 186,282 miles per second.
2006-09-29 14:03:53 · answer #6 · answered by egdthree 1 · 0⤊ 0⤋