Light or optics is somehow intimately related to glass science and technology, due mainly to the transparency of glass. The reason for this is due to transmission of light through a given piece of glass. If the light is partly transmitted and partly absorbed, then depending on the wavelength of the light absorbed by the glass that again depends on the impurities, there is a sensation in our eyes and we see the glass coloured. However; there is also a possibility of scattering of light by the small particles suspended intentionally within the glass matrix that give rise to the opaqueness int he glass. A special effect of scattering is Tyndall Effect, or Tyndall Scattering that is discussed in this article with reference to the production of milk glass, which is not only important in glass technology in terms of making milk glass, but also quite interesting as collectors items of value.
