Interference

Aim

To demonstrate interferance using Moire patterns.

Apparatus

  • Overhead Projector
  • Moire Patterns as shown

Moire Pattern

Moire Pattern

Description

The Moire' patterns used in the demonstration consist of a series of regularly spaced concentric circles, each circle representing a wavefront emanating form a source. Placing two similar Moire' patterns above each other on the overhead projector produces a visual representation of interference.