In what experiments is the diffraction of electromagnetic waves detected?

The diffraction of electromagnetic waves can be observed in experiments with a generator of centimeter electromagnetic waves. The wave receiver allows you to detect that electromagnetic waves are entering behind an aluminum disk that is opaque for them.

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.