The discussion revolves around converting energy measured in Joules to the number of photons (quanta) emitted by a radio station operating at a power of 200 KW and a frequency of 103.7 MHz. Participants explore the relationship between energy and photons using the equation E=hv.
Some participants have provided guidance on using Planck's constant and the relationship between energy and the number of photons. There is an ongoing exploration of the expected magnitude of the number of photons produced per second, with some expressing surprise at the large values obtained.
Participants note that the problem involves converting a significant amount of energy (200 KW) into a corresponding number of photons, raising questions about the assumptions made in the calculations.
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:
