The existence of photons was directly confirmed in the experiment of V. Bothe. A thin metal foil F was placed between two symmetrically located counters 1 and 2.
The foil was illuminated with a weak beam of X-rays R, under the action of which it itself became a source of X-rays (this phenomenon is called X-ray fluorescence. Due to the low intensity of the primary beam, the number of quanta emitted by the foil was very small. after 10 ~ 3 s) y and activates a special mechanism that makes a mark on the moving tape D. If the radiated energy propagated uniformly in all directions, as follows from the wave representations, both counters 1 and 2 would have to work simultaneously and the marks on the tape would lie symmetrically against one another, but in reality a completely random arrangement of marks was observed.This can only be explained by the fact that light quanta are emitted from the foil F in separate radiation events, flying in one direction or the other. has been experimentally proven noun the existence of special light particles – photons, which have energy and momentum.
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