Electromagnetic radiation (known as Cerenkov radiation) is emitted when a charge

Question

Electromagnetic radiation (known as Cerenkov radiation) is emitted when a charged particle moves through a medium faster then the local speed of light. It should be stressed that the particle is never going faster then the speed of light in vacuum (or c), just faster than the speed of light in the material (which is always less than c). Suppose our detector used aerogel (n=1.03) for the Cerenkov material and the photomultiplier tube array had a resolution of delta theta = 1.2 degrees . This means, for instance, that the detector can distinguish between Cerenkov light emitted at an angle of 15 degrees and that emitted at 13.8 degrees but can't tell the difference between Cerenkov light emitted at 15 and that emitted at 13.9 degrees What is the highest velocity v max at which a charged particle can be accurately measured to be below the speed of light in vacuum (c)? Express your answer as a multiple of to three significant figures. v max=_____c

Explanation / Answer

ok, so the highest angle that we can go is 13.9 subtract 1.2 from that and rework the problem with 12.7 degrees and you will get 0.995 c

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