Evening Star Newspaper, November 30, 1930, Page 128

o ! e - . 1. 11471 A TESTHEL> BouT 250 YEARS ! ; W[\ SN o\ THE THAMES RIVER AGO IT WAS DISCOVERED il : c Y - (LG B B 1NEnGLAND PROVED THAT AN ELECTRIC z : N G P e - L s i m THAT WATER CONDLUCTS CURRENT CouLD PASS i : 3 ~Cy = B ELECTRICITY. —* THROLGH THE HUMAN [BR ‘ A/ 2 . : 4///////// THE CURRENT OF BODY. - TESTS WERE : ‘ {34 ) : o : 7" Eecterny “Sumpep” o0\ i | / 2 - = = " ACROSS THE RIVER MADE IN BOTH FRANCE Y L P A i 7 /S - = Tunouzu'ms WATER AND ENGLAND WITH ‘ - . /] : = & — FROMTME STEEL RoD MEN SUSPENDED FROM w ) : gy , = —= FT— ____ HELD BYAMAN ON THE CEILING BY SILKEN | THE SUSPENDED MAN'S 7 | e T ovgigH T E SHORE TO THAT STRAPS. ° HANDS ARE TOLCHING A v | L% == "~ OFA MAN ONTHE £ .. o e E % SULPHUR GLOBE WHICH MAS BEEN ». =% X T—. OTHER $IDE. — CRARGED WITH ELECTRICITY 8Y FRICTION. : Milestones in Early Electrical Research HIGH LIGHTS OF HISTORY . The Story of the Telegraph—Part II1 | URING THE FIRST PART OF THE 18™ CENTURY MEN ADDED CONSIDERABLY TO THEIR KNOWLEDGE OF ELECTRICITY. THEY NO LONGER LOOKED UPON THEIR CRUDE DEVICES FOR PRODUCING ELECTRI- CITY AS MERELY AMUSING TOYS. THEY HAD BEGUN TO REALIZE THAT THEY HAD A GREAT FORCE ALMOST WITHIN THEIR GRASP, AND THE 18™ CENTURY SCIENTISTS “\i / STROVE DILIGENTLY TO FIND o > A WAY TO PRODUCE HEAVIER g *’@ CHARGES OF ELECTRICITY s )5 AND DEVISE APPLIANCES % WHICH SHOULD> PUT THIS WITH ELECTRICITY GENERATED BY NEW POWER TO WORK .N 1745 THREE MEN, — R B RN | FricTION MACHINES THE CHIEF FEA- vO (3] MUSSCHENBROK. § . FOR MANKIND, — = | | Vo8 GEST Musscrenore - M | TurE oF TvE TVPE oF FRICTION LEYDEN JAR, THE ANCESTOR OF THE . Il | MACHINE SHOWN ABOVE WAS ITS LARGE MODERN ELECTRIC BATIERY. o | | Gaass WHEEL TURNED BY HAND. —* 7/ ) V7, P ) SN o Wi % \ .N 1752 EJAMAI;I*FRAN N IN | AMERICA AND DALIBARD :trf'm R SUR—— ""‘E INTHE 18™CENTURY ANOTHER. | NCE OF THE LIGHTNING ROD TION MEN AND WOMEN IN FRANCE- SOLIRCE OF ELECTRICITY WAS DISCOVERED SUCCESSFULLY DEMONSTRATED THAT - e AR ————— GREATLY REDUCED THE NUMBER WENT ABOUT WEARING OR CARRYING BY LUIGI GALVANI, TTAL SCIENTIST, - i RE" | oF FIRES CAUSED BY LIGHTNING. —* | | IMPROVISED “LIGHTNING ROPS” WHEN HE ACGIDENTALLY BROUGHT Two THE SAME THING. WHENEVER A STORM THREATENED . METALS INTO CONTACT WS DISSECTINGY A FROG IN HIS LABORATORY. e _ ' : 7 ' i ; TmNHEIL,ANO’I’HEQ GERMAN, IS .An.n.vma ON GALVANI'S INVESTI- on.mwma AMPERES SUGGESTION SAID To HAVE BEEN THE FIRST TO GATIONS INTO THE PRODUCTION OF THAT A MAGNETIC NEEDLE PLACED (N AN — TWO GERMANS, ‘G.AUSS AND WEBER STRING ELECTRIC WIRES IN THE AIR ON ELECTRICITY BYCHEMICAL ACTION ELECTRIC COIL WILL TURM To THE RIGHT WHEN | LATER INVENTED A NEEDLE TeLE~ POLES EQUIPPED WITH INSULATORS. HE ON METALS, ALEXANDER VOLTA DEVISED | THE CURRENT FLOWS IN ONE DIRECTION AND | GRAPH, WHICH WAS USED FOR SoME WAS ALSO THE DISCOVERER THAT THE THE FIRST GALVANIC BATTERY, USING | TO THE LEFT WHEN THE CURRENT IS REVERSED, | TIME IN EUROPE. - GROUND> IS A CONPUCTOR . ° - -eemes (Copyright, 1930, by J. Carroll Mansfield) e e mobans, fassamapee. coud B b T