| Show really pure water found not to freeze at 32 degrees schenectady N Y water does not freeze at the freezing point but at a considerably lower temperature really pure clean water i rree free of particles that might serve as nuclei or starting points of freezing does not begin to crystallize into ice fee at zero centigrade 32 degrees above zero fahrenheit but at zero fahrenheit or a little below it this upset of one of the standard facts of all physics books comes as the result of a series of very carefully conducted experiments in the general electric research laboratories they are reported in the forthcoming issue of science by dr robert smith johannsen carefully prepared absolutely clean water was chilled in a specially built apparatus and the first I 1 formation or mation of ice was detected through the use of polarized light four sets of experiments produced first ice at temperatures ranging from 18 to 20 degrees centigrade below the traditional point or from tour four degrees below zero on the fahrenheit scale I 1 |
