Radio waves diffract around building although light waves do not. The reason is that radio waves.
Travel with speed larger than C
Have much larger wavelength than light
Carry news
Are not electromagnetic waves
As we learned
Property of EM wave -
It can be split and recombined to form an interference / Diffraction pattern.
Diffraction takes place when the wavelength of waves is compatible with the size of the aperture of optical so the wavelength of radio waves is much larger than light
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