Statement

14.2.4. Protons are accelerated by a voltage of 30 kV, and then, passing through a
gas target, they partially transform (practically without braking), capturing
electrons, into fast neutral hydrogen atoms. The frequency of stationary hydrogen atoms is $3.2 · 10^{15} Hz$. How much will the frequency of electromagnetic
waves emitted by moving hydrogen atoms perpendicular to the direction of
their movement change?