Show HOW to Make ICE Boiling HOT ID you ever hear of five different kinds of inch water first becomes solid t turning into ice iii DID ice Perhaps not The only kind of ice although it is nearly boiling hot 1 that you have ever seen or heard of before At ordinary atmospheric pressures water is the good old old- old fashioned common ordinary ice turns to ice at about 32 deg Fahrenheit But as But of late many new things are arc happening in inthe we compress it to very high figures we find that the world of science and the discovery of the existence ex ex- water is indeed a highly compressible substance substance- of five different kinds of ice is one of them a n thing that was not known before Thus Dr In Science and Invention H. H Gernsback describes de de- Bridgman has compressed water to 80 per cent scribes some of the thc very remarkable discoveries of its volume 1 During such compression the due entirely to extraordinarily high pressure water turns to ice at all an sorts of temper temperatures made by Prof P. P W. W Bridgman of the Carnegie and the four new and different kinds of ice that Institute at Washington Prof Bridgman investigated in in- were discovered are all considerably denser than a great many substances which he subjected sub sub- water In other words such a cake of ice would to tremendous pressures and under such sink in water instead of floating as ordinary conditions a number of surprising things happen ice does Take for instance water If we subject it to toa Water Vater however is only one of the substances a pressure of about pounds to the square that behaves strangely under high pressures Take p phosphorus r s for example x Ordinarily this is sub sub- sUR- sUR stance ance is Known mown in HI two lorms Jl bite ine V ordinary UI- UI nary yellow or white phosphorus and the red allotropic variety both however having practically practically practically cally the same general physical characteristics White phosphorus i is highly and cannot be left in the open air without danger of ignition It is a non-conductor non of electricity and as soft as wax If however we subject this phosphorus to the enormous pressure of some pounds per square inch we obtain an entirely new substance substance sub sub- stance which is neither the usual nor the allotropic allotropic allo allo- tropic red phosphorus but something entirely different We obtain black phosphorus which is very hard and which only oxidizes at a very slow rate It is also 15 per cent denser than the white variety It can be handled with the fingers with impunity and the material is a good conductor of electricity |