Amplitude and Intensity Relationship

[Amanda Bueno-Kling]

Can anyone explain the relationship between the amplitude of the wave and the intensity of the light? I am curious to know why they are related the way that they are. I know increasing the amplitude should increase the intensity, but I don't know why.

[Claire_Latendresse_1E]

Hi!
Amplitude relates to the energy being carried by the wave, and intensity is the energy that the wave holds. If I remember correctly, the intensity is proportional to the square of the amplitude. So, a higher amplitude suggests higher energy, and a lower amplitude suggests lower energy. :)

[lauren_tran_1L]

There is a proportional relationship between amplitude and intensity in terms of light.

[Kainalu Puu-Robinson]

The equation for the situation you just described is A^2 ∝ I, where "A" is the amplitude and "I" is the intensity.

[Susan Chamling 1F]

Intensity is proportional to amplitude so that when one increases, so will the other.