I read a article that said water slows down a photons speed of light. So do other materials. My question is this. If one can slow down a radio wave because it is made of photons thus light would a antenna, that is if it's the right antenna for the application (antenna not known right now, still studying), would that antenna asorb more of the radio wave because the photons are slowed down. Would water or another material that slows down photons so as the electrons in the medium travel faster than the photons cause the antenna to convert more of those photons to electrons in the antenna. Thanks and have a good day.

 

Would water or another material that slows down photons so as the electrons in the medium travel faster than the photons

Electrons are electromagnetic too. In any particular medium an RF electromagnetic field and an electrical signal will travel at the same speed.

 

I read a article that said water slows down a photons speed of light. So do other materials. My question is this. If one can slow down a radio wave because it is made of photons thus light would a antenna, that is if it's the right antenna for the application (antenna not known right now, still studying), would that antenna asorb more of the radio wave because the photons are slowed down. Would water or another material that slows down photons so as the electrons in the medium travel faster than the photons cause the antenna to convert more of those photons to electrons in the antenna. Thanks and have a good day.

The quick answer is no because photons, antennas and electrons don't work the way you think they do. In water (acting as a dielectric) the phase velocity of light is slower so it's possible for an electron to move faster than light in those conditions.

The result is called: https://en.wikipedia.org/wiki/Cherenkov_radiation

This can happen in air (where the speed of light is slightly slower than vacuum) with Cosmic radiation particles at very high energies.
https://en.wikipedia.org/wiki/Air_shower_(physics)

 

Electrons are electromagnetic too. In any particular medium an RF electromagnetic field and an electrical signal will travel at the same speed.

Electrons are massive particles. They cannot travel at the speed of light.

 

Electrons are massive particles. They cannot travel at the speed of light.

They can't in vacuum but in water or even air, that's a different story #3.

 

They can't in vacuum but in water or even air, that's a different story...

Yeah....

...I'd like to see you design an experiment where you can achieve near light speed electron velocity in air or water.

There's a reason they're called "vacuum tubes".

 

BTW, whatever happened to the Vacuum-Channel Transistor?

https://spectrum.ieee.org/semicondu...he-vacuum-transistor-a-device-made-of-nothing

 

Yeah....

...I'd like to see you design an experiment where you can achieve near light speed electron velocity in air or water.

There's a reason they're called "vacuum tubes".

I could do it every day at work but then I'd glow blue at night.

 

I could do every day at work but then I'd glow blue at night.

Sorry. You are right.

 

Electrons are massive particles. They cannot travel at the speed of light.

But electrical signals do travel at the speed of light.

 

BTW, whatever happened to the Vacuum-Channel Transistor?

https://spectrum.ieee.org/semicondu...he-vacuum-transistor-a-device-made-of-nothing

https://forum.allaboutcircuits.com/threads/thought-for-the-day.44743/page-37#post-1332776

 

But electrical signals do travel at the speed of light.

Electricity travels much slower than the speed of light when travelling along wires , so depends how you define signals.

 

But electrical signals do travel at the speed of light.

Yes, as do all EM waves or EM field changes. The fly in the ointment here is vacuum. c in vacuum is the limit but the speed of light varies in other transmission media. Particles with mass can't equal or pass the c vacuum limit but they can exceed the speed that c travels when interacting with matter or even changing EM fields in special cases.

 

Electricity travels much slower than the speed of light when travelling along wires , so depends how you define signals.

Yes, it depends.

'Electricity' is the flow/movement of charge formally, not a form of energy. In circuits with wire conductors signals are electrical energy as fields, not charge.
https://simple.wikipedia.org/wiki/Electricity

 

Electricity travels much slower than the speed of light when travelling along wires , so depends how you define signals.

Light travels more slowly in media other than vacuum too.

 

Yeah....

...I'd like to see you design an experiment where you can achieve near light speed electron velocity in air or water.

There's a reason they're called "vacuum tubes".

He's referring to the speed of light in water - not free space. The blue glow in water around radioactive materials is caused by electrons traveling faster than the speed of light in water.

Someone already posted a link : https://en.wikipedia.org/wiki/Cherenkov_radiation

 

Someone already posted a link : https://en.wikipedia.org/wiki/Cherenkov_radiation

Yeah. That'd be me.

 

Yeah. That'd be me.

Me too in post #3.

 

Me too in post #3.

You seem to have edited your post since I read it.

 

No. It was there. I went to it before yours.