Radiation intensity from energy, area, and time

Intensity is a scalar physical quantity that quantitatively characterizes the power carried by a wave in the direction of propagation per unit area per unit time.

Links:

  1. Wikipedia, derivable from here.

intensity

(Average) intensity of incident radiation.

Symbol:

I

Latex:

\(I\)

Dimension:

power/area

energy

energy of incident radiation.

Symbol:

E

Latex:

\(E\)

Dimension:

energy

area

area.

Symbol:

A

Latex:

\(A\)

Dimension:

area

time

time.

Symbol:

t

Latex:

\(t\)

Dimension:

time

law

I = E / (A * t)

Latex:
\[I = \frac{E}{A t}\]