diffraction

The phenomenon is purely optical, involving diffraction of light.

It is therefore certain that this is a phenomenon of the diffraction of light simply produced by the vesicles of the mist.

X-ray-diffraction studies showed no material differences, nor were there detectable differences in “feel”, smell, or plasticity.

Perfect transparency is obtained since there is neither refraction nor diffraction of the visible colors.

This diffraction of light first proved to us definitely the reality of the undulatory theory of light.