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THE TEARS OF THE HELIADES
n THE PHILOSOPHERS STONE
AN ARTIST A QUEEN AND A COURT
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alchemists Alexander Graham Bell amber American apparatus arc light battery became Boston broadcasting burner called carbon cent century chapter chariot civilization Company cost discovery dynamo early Edison elec electric current electric light electromagnetic energy engine England Ernest Greenwood experiments fact Faraday farm farmer father filament fire Franklin glass Greek hydro-electric idea illumination incandescent lamp industry invention inventor known laboratory later Leyden jar living locomotive lodestone London machine magnetic means ment metal Michael Faraday miles modern Morse motor Mottelay operation paper patent philosophers physician plant platinum plow Port Huron possible practical problem produced radio railroads result S. F. B. Morse says scientists Sir Humphry Davy Sir Joseph Swan speech station steam story Swan telegraph telephone Thales theater thought tion transmitted tricity tube turned United vacuum Voltaic Pile water power waves wire York