HEAT

There is now no doubt that Was | heat is a state of matter, The sensations | to) to which we give the names of beat and 858. | cold are due to the ereates oe le rapidity the | with which the molecules of the om A ich- | question are in motion. Heat pa es frora dis- | a warm pa BR in | radtation, just as it pa es from the sun to 399, | the earth. From a warm body to a cold eer | one Been titre mw tion. When hot water the kitchen and gee sora Ba Por nee hg sea- | it conreys ita heat to the water in )20. | cistern, and so thet water is said to be tans | malt beat coors rickty team ollseens ieaiata eat more q' 2. to/ e.g., are good conductors; wood, flannel, ice- | and silk are bad conductors, Heat, as, in| a rule, causes bodies to expand; hence Oe8. the rails on a railway have spaces between inst | their ends to allow of thelr =——— in | a| summer, All bodies with we are gue ecouseeS Facet more or le heat, bot off | it is believed that there is a point at which heat, that is molecular motion, ceases; this point is 273 degrees below Zero of the at | Centizrade scale.. ®| HEATH FIELD, [s. 167]