摘要
The charged particles passing through a transparent medium with a speed of v>C/n (C—velocity of light; n—refractivity of medium) will generate the Cerenkov radiation. In case of the medium being thin plate-shaped, the radiated photons form a light spot image of local scope on the bottom surface. This is what we call the Cerenkov spot. The photo-electric instrument coupled to the bottom surface (such
