Path Difference
Path difference describes the variation in distances traveled by light waves from different points on the slit to a specific spot on the screen. It plays a critical role in determining how light waves interact—whether constructively or destructively—at that point. Understanding Single Slit Diffraction offers insights into the intriguing behavior of light waves as they pass through small openings, producing distinct patterns that reveal their wave-like nature.
The formula for path difference in single slit diffraction is:
L = d⋅sin(θ)
where,
- d represents the width of the slit
- θ is the angle of diffraction
Single Slit Diffraction
Single Slit Diffraction is a fundamental concept in wave optics that explains how light behaves as a wave when passing through a narrow slit. When coherent light (like a laser) goes through a single narrow slit, the waves spread out, and their interaction creates a pattern on a screen placed some distance away. This phenomenon, known as diffraction, leads to the formation of alternating bright and dark regions, showcasing the wave nature of light.
In this article, we’ll learn core concepts, types, and practical applications of Single Slit Diffraction, aiming to simplify and explore its patterns and formulas.
Table of Content
- What is Single Slit Diffraction?
- Central Maximum
- Path Difference
- Minima Position
- Intensity Distribution Curve (Pattern)
- Single Slit Diffraction Formula
Diffraction is defined as the phenomenon in which light bends around the corners of an obstacle whose size is comparable to the wavelength of the light