It has been done and reported onhi
Would it be possible to slow light to a stop?
How could we do this and what would happen?
We have to be a bit careful in interpreting those experiments, which use ultra-cold gases of atoms. The speed that is being referred to is what's called the group velocity of the light, which is different from the phase velocity. I don't think those experiments bring a single wavelength of light to a stop.It has been done and reported on
Briefly slowing light to a stop involved a very cold tube of something through which the light was directed
We have to be a bit careful in interpreting those experiments, which use ultra-cold gases of atoms. The speed that is being referred to is what's called the group velocity of the light, which is different from the phase velocity. I don't think those experiments bring a single wavelength of light to a stop.
who is Dr. Hau?
![]()
hi
Would it be possible to slow light to a stop?
How could we do this and what would happen?
Reminded me of a poem I wrote years ago, may even have posted it in the poem threaddoes a black hole stop light ?
Anyway my understanding is Black Holes absorb light which fall into its gravity well and absorb the light's kinetic energy, hence no reflection
Nothingif the kinetic energy is removed, what is left of the light ?
It would have to be truely non reflective in which case it would absorb the kinetic energy of light and heat upwould a non-reflective sheet of black paper stop light?
06:11 am 14 January00:30am 14 Jan far to early for coffee
Now 3am Darwin time06:11 am 14 January
coffee finished breakfast finished
now thinking about the fence repair i need to do & wondering if i have forgotten something because it feels like i have.
No.does a black hole stop light ?
I personally wouldn't describe it as kinetic energy, though that's not unreasonable. The energy of light obeys somewhat different rules to the kinetic energy of massive particles.Light only has kinetic energy
Yes, it absorbs the light and heats up a little in the process.would a non-reflective sheet of black paper stop light?
nasaYes, it absorbs the light and heats up a little in the process.
There are some interesting youtube videos about the blackest available paints, which are very very black indeed. They absorb well over 99% of the incoming light.