$reflection refraction and diffraction of sound waves$

$reflection refraction and diffraction of sound waves$

These properties of wave motion are important because they explain how waves move. In fact, it is so similar to light waves that it even undergoes total internal reflection. The size of the aperture (or object) determines the extent of diffraction, with the most significant diffraction occurring when the aperture is of the same order of magnitude as the wavelength of the wave. Both electromagnetic and physical waves reflect, refract and diffract energy. Diffractionĭiffraction is the spreading out of a wave when it passes through an aperture (gap/hole) or around an object. IMPORTANT NOTE: If a wave enters a medium at 90º to the surface (parallel to the normal) it is not refracted. Refraction Refraction is the bending of a wave as it enters a new medium at an angle When a wave enters a new medium at an angle refraction occurs because. The angle of refraction is greater than the angle of incidence Refraction of waves involves a change in the direction of waves as they pass from one medium to another.To calculate the speed of sound in air at 30 degrees: C (331 + 0.6 × 30) 349 m/s. T the air temperature in degrees Celsius. Here is the formula for calculating the increase in speed: C (331 + 0.6T)m/s. The angle of refraction is less than the angle of incidence For each 1 degree Celsius added the speed of sound increases.

$reflection refraction and diffraction of sound waves$

The angle of refraction is larger or smaller than the angle of incidence depending on how the speed changes: Refraction occurs because waves travel at different speeds in different mediums and this change in speed is caused by differences in density between the mediums.

$reflection refraction and diffraction of sound waves$

Reflection refraction and diffraction of sound waves