Okay so i am wondering how it is that i can transmit a EM wave in the microwave region many miles yet when i transmit energy via a coil the EM wave produced only acts over a small distance.
Is this because of the frequency it is transmitted at?
wavelength x frequency = c
Eph = hc / wavelength
i assume the wavelength in the coil is minute and so the energy and frequency is large. The small wavelength has trouble penetrating things due to some interaction with the atoms in the substance it penetrates?
and the opposite for a microwave - small frequency large wavelength and so more penetrating allowing it to reach a further distance. Does the electric and magnetic field created by a single charge at the frequency of a microwave stretch many miles? are there minute waves going through me now to my phone? does this cause electrons on my phone antenna to move?
i Suppose what i am asking is how can i determine the distance an electric / magnetic field stretches given a certain frequency energy and wavelength.
any thoughts?
thanks for your time,
Lee.
Is this because of the frequency it is transmitted at?
wavelength x frequency = c
Eph = hc / wavelength
i assume the wavelength in the coil is minute and so the energy and frequency is large. The small wavelength has trouble penetrating things due to some interaction with the atoms in the substance it penetrates?
and the opposite for a microwave - small frequency large wavelength and so more penetrating allowing it to reach a further distance. Does the electric and magnetic field created by a single charge at the frequency of a microwave stretch many miles? are there minute waves going through me now to my phone? does this cause electrons on my phone antenna to move?
i Suppose what i am asking is how can i determine the distance an electric / magnetic field stretches given a certain frequency energy and wavelength.
any thoughts?
thanks for your time,
Lee.