In the context of wireless signal propagation, the phenomenon that occurs when an electromagnetic wave encounters an obstruction and splits into secondary waves. The secondary waves continue to propagate in the direction in which they were spli?

Diffraction

Explanation:

Diffraction occurs when an electromagnetic waves encounter an obstruction and split in secondary waves, these waves continue the same direction that was split.

These waves going to around the object, obstacle with sharp edges could cause detraction, like tables, refrigerators chairs, walls, furniture, etc.