SCI: Light speed in water < fission particle speed

Mon, 22 Feb 1999 22:23:47 +0100

It appears as if "Danny" <> wrote:
|Such as in the bending of space, like with black holes, they suck light in at
|like twice their speed. So it is in this case that light is travelling
|faster, relatively. But it's also implied it goes the same speed, just uses a
|wrinkle in time. Light moving through water or whatever also goes the same
|speed, its just refracted.

Do you claim that light does not go slower in water?

If you do, then you are in error.
If you do not, disregard this text.

Neutrons in a fission reactor move faster than light does in the water. This causes "Cherenkov radiation", a blueish (most of it is UV) light without any apparent direct source, in the reactor tank.

Mallet discovered it in 1926, observed that the light had a continuous spectrum, no band structure like fluorescent light.

Studied by Pavel Alekseyevich Cherenkov (1904-1990) from 1934-1938. He proved that it was not a fluorescence effect, that the light was partially polarized. Frank and Tamm explained it 1927.

P.A.Cherenkov, I.M.Frank and I.Y.Tamm shared a Nobel prize in 1958 for their work on the Cherenkov radiation.

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