Vertically polarized light with intensity I0 is normally...

Vertically polarized light with intensity $I_{0}$ is normally incident on an ideal polarizer. As the polarizer is rotated about a horizontal axis, the intensity $I$ of light transmitted through the polarizer varies with the orientation of the polarizer $(\theta),$ where $\theta=0$ corresponds to a vertical transmission axis. Sketch a graph of $I$ as a function of $\theta$ for one complete rotation of the polarizer $\left(0 \leq \theta \leq 360^{\circ}\right)$.(W) tutorial: polarized light).

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Polarized Light

Polarized light refers to light waves whose electric field vectors oscillate in a particular plane. This restricted oscillation contrasts with unpolarized light, where the electric field vibrates in multiple directions. Understanding polarized light is essential when analyzing how optical elements, like polarizers, influence the intensity and direction of light propagation.

Malus's Law

Malus's Law describes how the intensity of polarized light changes as it passes through a polarizing filter. According to this law, the transmitted intensity is given by I = I? cos²?, where I? is the incident intensity and ? is the angle between the light’s polarization direction and the polarizer’s transmission axis. This relationship is fundamental for predicting the behavior of light through polarizing elements.

Ideal Polarizer

An ideal polarizer is a theoretical optical device that perfectly transmits the component of the incident light that is parallel to its transmission axis while completely absorbing or blocking the perpendicular component. This idealization simplifies the analysis of light behavior through polarizers and ensures that the mathematical predictions, such as those given by Malus's Law, hold true in the absence of imperfections.

Please give Ace some feedback