MARK, Motz and Trillat 1 have shown that traces of grease can give rise to extra rings in electron diffraction patterns from metal films. In agreement with them, we have found that the spacings of ...
[The Thought Emporium] has been fascinated by holograms for a long time, and in all sorts of different ways. His ultimate goal right now is to work up to creating holograms using chocolate, but along ...