Can electromagnetic waves travel through walls?

The radio waves on the other hand are large enough to ignore the walls because they're too thin. But if you've ever tried to listen to a radio in a tunnel or a cave, you know that radio waves have trouble penetrating through meters of earth. read more

Electromagnetic waves include light, AM and FM radio, and microwaves. Those categories represent different ranges of frequency. It seems the lower the frequency of a signal, the better it can penetrate a wall. Light can travel through a wall if the wall is made of paper or contains a window. read more

Sound waves are a different phenomenon but nevertheless, low v frequency travels almost omnidirectional through walls, while high frequency travels in straighter patterns and will bounce off walls, this is what waves do. read more

And that is why they are not able to go through the wall. ( As a mosquito cannot fly when it is rainy.) CONCLUSION1: The radio and light waves are part of the electromagnetic spectrum, but are very different. Radio waves are much bigger than light waves (in terms of their wavelength). read more