Principles of Malus Law

According to Malus’ law, the polarizer’s angle affects how much-polarized light can flow through it.

Only the portion of unpolarized light that is parallel to the polarization axis is transmitted via a polarizer. The square of the cosine of the angle formed between the polarization axis and the direction of the incident light determines the intensity of the light that is transmitted. We call this Malus’ law.
Malus’ law may be mathematically represented as I = I0 cos²θ, where I is the transmitted light intensity, I0 is the incident light intensity, and θ is the angle formed between the polarization axis and the incident light direction.
Malus’ law is crucial to the study of polarization and has several uses, including the creation of polarising filters for LCD panels and cameras. It is also used in the science of optics to measure the birefringence of materials and to ascertain the polarization state of light.
All things considered, Malus’ law is a key idea in the study of polarization and has significant implications in many other domains.

Malus Law

Malus Law, also known as Malus Law of Polarization, is a fundamental principle in optics that describes how the intensity of polarized light changes as it passes through a polarizer. It is named after Étienne-Louis Malus, a French physicist who formulated the law in 1808.

In this article, we will discuss the concept of Malus Law which describes the intensity of change in the intensity of polarized light.

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