Light Intensity Calculator

Calculate Light Intensity (I)









Formula

The formula to calculate Light Intensity (I) is:

\[ I = \frac{n \times f \times h}{A \times t} \]

Where:

What is Light Intensity?

Light intensity, or luminous intensity, is a measure of the power emitted by a light source in a certain direction. This measurement considers the wavelength and the amount of light that spreads over a given area. In photometry, light intensity is a crucial concept, and it is often measured in candelas (cd). Understanding light intensity helps in various fields, including photography, lighting design, and optical engineering.

Example Calculation

Let's consider an example:

Using the formula to calculate Light Intensity:

\[ I = \frac{1e20 \times 5e14 \times 6.62607015e-34}{1 \times 2} = \frac{3.313035075e1}{2} = 1.66 \, \text{cd} \]

This means that the light intensity is approximately 1.66 candela.