Show Marvels of Heat L BY Y EDGAR EDGAn LUCIEN LARKIN physical science teaches that A ALL AIT al nil particles of all apparently solid bodies such Ruch as iron ironS stone stono wood lead lend tc composed of ot electrons atoms and molecules are arC In Intensely rapid oscillation to and fro tro This motion motion mo mo- tio tion 13 is known to bo a fact although none nono o of or minute bodies can be Seen lIeen In an any microscope How the they became became- l known to scientists cannot bo told In this place Take fake a bar of steel steal l Its motions within If placed in a room where temperature temperature tem tern la Is GO CO degrees decrees will soon be he CO GO GOde de degre decrees rees The molecules will be bo tl flying this la way und and that In every conceivable d direction through exceedingly l short distances but these distances arc aro very gret In proportion to the ultra ultra-ml- diameters of the tho atoms or cv even n of or the tho molecules This motion Inside of solids also ex exists ex- ex It'll In liquids and even gases when they are arc in an a container without without without with with- out an opening For If Ir thero I is an aperture however howe minute oven ovon If only the tho diameter of ono molecule the gas sas will all escape which Is a 1 most wonderful wonderful won won- thing thing any any gas sas as will thus pass out In an any direction Liquids would only flow out through a hole In the tho bottom bullom or sides but alwa always 8 below the surface of tho the liquid This entire doctrine of molecular motions motions mo mo- within all matter Is called cUed the tho kinetic theory from a Greek word meaning beaning to move In English When hen kinetic laws wore established the mental horizon of man was greatly ex ox- ox The Tho bar of steel loft in the air at 60 degrees if left tiler 1011 long enough h will wilt be at nt 60 degrees In lit every part even cven In the centre And the motions motion within will be those of ot steel at 60 Now ow apply appl heat a flame name for Instance at one end The molecules of steel will Increase i e their rates of swing and also o the tho distances through which the they move to and fro Soon the end of ot the bar will be as hot as is the fire and then a wonderful process will vill appear the tho heat will travel to the tho other end O oF or the barTho bar bur Tho The scientific name of ot heat is a 1 mode of motion lint But the steel bar will expand and become longer and In this lengthening It can ran push a weight of many tons along Then mode of ot motion motion mo mo- tion becomes a mighty might force torce Anti And mode modo of motion In tho the sun Is able to dominate the tho gigantic machine tho the entire solar system stem of planets moons and comets Instead of holding a flame flamo a against the end of or the steel bar or putting the end In a fire of coals as In Ina Ina Ina a forge connect a n. wire to each ench cm end and end let these wires run to the tho poles of a low pressure but great volume o ot of current of electricity dynamo Turn on the switch soon the steel will begin to tob tob b bj b warm then hot then hotter then It will ill begin o 0 give Ive out dull lull red JI light ht th fh V. V n l linn iv hit n net t still whiter Soon th the bar bar will i s. s sag g- g v do down break and fall But put tho the bar har at first Into a corundum corundum corundum cor cor- tube tubo able to resist ten terrific If Ic heat Tho The bar will turn Into a a. boiling hailing liquid and by sui suitable table means the tho whole bar barcan barcan barcan can be made to vaporize I Into to gas But nut electricity and heat are so wonderful wonderful won won- that the tho astonishment Is always alwa's awakened awaken ell in all who behold At the Worlds World's Fair In Chicago the they had a huge dynamo with Iron Jaws to clutch the ends end of or bars of metal for experiments expert expert- ments with electric heat They put In Ina a bar of or Iron two Inches square and three toot feet lon long and turned turne on the electricity electricity elec elec- The bar soon grew gre re to be red ar ard white hot and sagged down in the tIle middle It Il was lifted out with steel tongs tong and then T I substituted myself for forthe forthe forthe the bar and placed a hand Iland on each huge Iron terminal of the tho dynamo and took all the current through m my ray corPOreal corporeal corporeal cor cor- structure I merely merel felt a n. weak vibration In the tho hands and wrists The TIle current was great reat In quantity but o overy of very ery low pre pressure sur I b believe eye J of one anc and ore half to two volts Then Thea I stepped out of the circuit and andI I har bar was placed In the tile Jaws with more white heat Then I went up I to a d dynamo namo placed m my buck brick against a huge pole polo placed a wrench weighIng weighing weighing weigh weigh- ing three pounds against my breast lc let let go 0 and the wrench remained held b by the Intense e power of oC magnetism Ami ind here I am still sUll writing In 1011 1911 and the exploits were In the tho fair In 1893 Heat will pass through a lens Ions made of oC Ice and strike up a fire at nt the fo foliS to- to ells cus liS Another mistake Ener Energy y from tho the sun un d through th the lee Ice and was waR drawn to a 3 focus fou on matter which was as able to receive It and appropriate It as heat You can separate heat from l light Ight and use each separately and do llo domany domany many wonderful things with ith both these totally unknown forces force In a suitable laboratory Unknown is used d hero here purposely pur pur- po ely for nothing is now known as 13 to what anything really realy Is |