I need a little help with this question

The electrons in a typical television reciever have kinetic energies in the order of 10keV. Do the designers of the image-forming systems in television sets have to use quantum physics in their calculations?

Thanks

I need a little help with this question

The electrons in a typical television reciever have kinetic energies in the order of 10keV. Do the designers of the image-forming systems in television sets have to use quantum physics in their calculations?

Thanks

No, not at all. It's a matter of providing sufficient voltage and current. Along with the deflection and timing circuits, of course. Pure common electronics, no quantum physics needed.

Yeah. All that is needed is classical electromagnetism.

They do need an understanding of radition exposure and shielding though. Actually, most color crt's are around 30-40kv. That's some fairly serious x-ray radiation. A lot of early tv techs died of leukemia. Modern crt designs minimize xray exposure particularly toward the front, but caution is still a good idea. One of the _many_ reasons not to muck around inside of a tv, computer monitor, etc. unless you truely _know_ what your doing.