#### Velocity of Waves

Sound is a form of energy which produces the sensation of hearing. This note provides us an information about velocity of waves.

#### Newton’s Formula and Factors Affecting for Velocity of Sound in a Gas

Newton assumed that the compression and rarefaction is slow process so sound waves propagate through an isothermal process in gas but according to Laplace, the process of compression and rarefaction occur so rapidly that neither heat is transferred to the surrounding during rarefaction. This note provides ua an information about Newton’s formula for velocity of sound in a gas and factors affecting the velocity of sound in a gas.