Malus’s Law Calculator

PHYIC CALCULATOR Malus’s Law Calculator A precise tool.
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What is the Malus’s Law Calculator & How does it work?

Malus’s Law describes the intensity of light that passes through a polarizer. According to this law, the transmitted intensity I is proportional to the square of the cosine of the angle (theta) between the polarization direction of the incident light and the axis of the polarizer.

I = I_0 cos^2(theta)
I = Transmitted intensity
I0 = Incident intensity
(theta) = Angle between incident light and polarizer axis

This law is fundamental in understanding the behavior of polarized light and has applications in various fields such as optics, photography, and display technologies.

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Frequently Asked Questions
What is Malus’s Law?
Malus’s Law states that the intensity of light passing through a polarizer is proportional to the square of the cosine of the angle between the incident light and the polarizer axis.
How do I use this calculator?
Enter the incident intensity and the angle between the incident light and the polarizer axis. The calculator will output the transmitted intensity.
What units should I use for intensity?
You can use any consistent unit of intensity, such as watts per square meter (W/m²) or lumens (lm).
Can this calculator handle angles greater than 90 degrees?
Yes, you can input any angle. Angles greater than 90 degrees will still yield a valid result based on the cosine function.
What is the significance of the polarizer axis in Malus’s Law?
The polarizer axis is the direction along which the polarizer allows light to pass. The angle between this axis and the incident light determines the transmitted intensity.
How does changing the angle affect the transmitted intensity?
As the angle increases, the cosine of the angle decreases, leading to a reduction in transmitted intensity according to Malus’s Law.
Are there any limitations to this calculator?
This calculator assumes ideal conditions and does not account for factors like absorption or multiple polarizers.

Results are for informational purposes only and do not constitute professional advice.