"enables" in what way? If you mean production of vitamin D and causes tanning it is UV.
The action of the sun on the skin lets us make vitamin D. Mid range ultraviolet rays (UVB) are the waves needed.
ultra violet
UV Rays
Xray.
A sinus wave simply means that the instantaneous value is equal to the sine of the phase. Sound is determined more by the frequency of the wave. Frequency is the amount of time it takes for a wave to return to any given value repeatedly and is measured in Hertz (abbreviated Hz). A 1,000 Hz tone will sound much different than a 10,000 Hz tone. Changing the wave from sinusoidal to a trapezoidal or square wave will have an effect on sound but this is normally heard as the frequency of the wave with distortion.
Changing the amplitude of a note will alter its volume.
Disturbance in particle motion parallel to the wave velocity is called a longitudinal wave. Disturbance in particle motion perpendicular to the wave velocity is called a transverse wave.
a transverse wave
A snake's body make a transverse wave as the snake moves forward.
A snake's body make a transverse wave as the snake moves forward.
P wave .
body waves
Ultraviolet radiation, also known as UV light, can cause both skin cancer and Vitamin D production. This type of wave comes from our Sun.
UV Rays
The earthquake body wave which can penetrate the Earth's core is the P-wave.
No, it does not produce vitamin D.
Body Waves
P-wave
P Wave
p wave