Evening Republican, Volume 21, Number 150, Rensselaer, Jasper County, 12 July 1917 — Light In Sugar Crystals. [ARTICLE]

Light In Sugar Crystals.

A soft bluish light has occasionally been seen when a scoop was scraped across solidly caked sugar in the bin. Loose sugar does not show this glow nor does granulated. A scientist says that the cause of the peculiar light is in the fracturing of the sugar crystals. Luminescence of this type ao companies the breaking of crystals of a number of different substances, but ~in none is it more pronounced than in rock candy. To get the best effect place lumps of rock candy between the jaws of nut crackers or forceps and suddenly crush the crystal to fragments. If the room has previously been darkened the flash of light may be seen at a distance of 20 yards or more.