Superconductivity for light beams?

In summary: LIGHT again, I ask, since you didn't answer my questions ...nothing that I am aware of ... all mediums that will support the transmission of light will have losses
  • #36
phinds said:
But is that current? Can it do work? (particularly sustained work?)

yes it's current ... how do you think an tube works ?

Electron-Tube-EL34-B-6V6GT-6146B-6L6GT-6146-EL34-B-.jpg
or the older TV picture tube ?

monito6.jpg


There is a current flowing from the cathode to anode across the vacuum :smile:Dave
 
Science news on Phys.org
  • #37
AAAGGG. Tubes. I hate tubes. Bah humbug.
 
  • Like
Likes davenn
  • #38
phinds said:
AAAGGG. Tubes. I hate tubes. Bah humbug.

They were wonderful things for keeping the radio shack warm on cold winter nights :smile:
 
  • #39
davenn said:
They were wonderful things for keeping the radio shack warm on cold winter nights :smile:
Yes, and they were TERRIFIC in Mcintosh amps and preamps but I still hate them. It's a long story.
 
  • Like
Likes davenn
  • #40
While superconductivity requires charged particles, in some special media, light can behave as a superfluid, i.e. propagate without losses. I think we had an article in the news section just some days ago:
https://phys.org/news/2017-06-stream-superfluid.html
 
Back
Top