Show another random image.



Event horizon?

A 404nm laser shining through a cut-glass tumbler onto white laser-printer paper (which fluoresces due to the whitener). This produces an almost infinite set of caustic patterns. Try looking at the full-size version.
This version is inverted and converted to greyscale.
An example of complex, highly monochromatic, diffraction patterns.

Flickr page for this photo.

Visit the Eye for Science Flickr group.

Visit our Facebook app profile page.