A large number of pictures of the diffraction pattern of the light passed through the Ronchi ruling
were collected. The 250 lines/inch Ronchi ruling was placed 13.0 cm from
the source of diverging He-Ne laser light (wavelength 632.8 nm).
The pictures cover the range from 5.5 cm from the ruling out to 23.0 cm, in 1.0 mm steps.
The Talbot images of the ruling can be seen at 8.0 cm, 13.3 cm, 22.3 cm, and 40.9 cm, as shown below.
Click here to step through a sequence of images.
Click here to access all images at once.
Talbot Effect Images