As a result of ionization, a fast charged particle, when moving in a layer of photographic emulsion, creates centers of a latent image along its trajectory. After development, images of traces of the primary particle and all charged particles that have arisen in the emulsion as a result of nuclear interactions with the primary particle appear.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.