Reflection of Sound Waves

Hello everyone! Today, I will be talking about the reflection of sound waves, also known as ECHO! Isn't that exciting? This post is a must read if you want to have a clearer idea of echolocation.

After carrying out various experiments at my lab, I also found out that the amount of energy carried by the reflected sound wave varies with the type of surface. The amount of energy is large if the surface is firm and smooth, and less if the surface is soft and rough. Also, for sound reflected off smooth surface, the angle of incidence equals to angle of reflection.

http://www.physicsclassroom.com/Class/refln/u13l1d3.gif
A picture to illustrate the concept of sound waves on different objects

I got to go now! Dinner time with my lovely wife.