🔬 Discovery

Talbot effect

Efecto Talbot

Date
1836 · confidence high
Place
Lacock, Wiltshire, England, United Kingdom
Credited to
William Henry Fox Talbot (1836)
Field
Communication

What was discovered

Diffraction effect in which the image of a periodic grating illuminated by a plane wave repeats at regular distances (the Talbot length), including a half-period-shifted version at half that distance.

What it led to

  • lensless Talbot lithography
  • generation of periodic patterns in precision optics
  • applications in interferometry and wavefront sensors
  • quantum and photonic imaging techniques

Links

Sources✓ verified 2026-09-28