Light pressure¶

Light pressure is the pressure exerted by light radiation incident on the surface of a body. Under normal light incidence on the surface, the light pressure depends only on the reflection coefficient and the intensity of the radiation.

Notation:

\(c\) (c) is speed_of_light.

Links:

BYJU’s, “Radiation pressure formula”.

pressure¶

Light pressure.

Symbol:: p
Latex:: \(p\)
Dimension:: pressure

intensity¶

intensity of incident radiation.

Symbol:: I
Latex:: \(I\)
Dimension:: power/area

reflection_coefficient¶

reflectance of the surface.

Symbol:: R
Latex:: \(R\)
Dimension:: dimensionless

law¶

p = I * (1 + R) / c

Latex:: \[p = \frac{I \left(1 + R\right)}{c}\]