This discussion focuses on converting energy measured in Joules to the number of photons (quanta) emitted by a radio station operating at 200 kW and a frequency of 103.7 MHz. The key formula used is E_{photon} = hν, where E is the energy of a single photon, h is Planck's constant, and ν is the frequency. Participants confirm that the total energy emitted per second must equal the station's output, leading to calculations that yield an expected photon emission of approximately 2.9 x 10^30 photons per second.
PREREQUISITESPhysicists, engineers in telecommunications, and anyone interested in the conversion of energy to photon emissions in radio frequency applications.
You want to find the number of photons (radio frequency ones) emitted per second.Jacob87411 said:
No. This equation will give you the energy that is released in one photon.Jacob87411 said:
You do not need the speed. You need Planck's Constant.Jacob87411 said:
So how many photons are produced in one second?Jacob87411 said:
Personally I get a rather large number (which is too be expected) but should it be this (2.9 x 1030 photons)[/color] big?Andrew Mason said:
Was it the same as my number?Jacob87411 said:
It was in white.Jacob87411 said:
It is that big. At 1000 km, the intensity would be about 2 x 10^17 photons/m^2 per second. And that is just a measly radio antenna. You can see why a quasar can still provide detectable radio signals on Earth despite being billions of light years away.The Bob said:
You can. So much for telescopes that can detect a few photons of light, use radar discs.Andrew Mason said:
