Example image of eyePlorer eyePlorer map for 'Timeline of radio': History of radio Radio Technology History Invention of radio Wireless telegraphy Alexander Stepanovich Popov Guglielmo Marconi Nikola Tesla Spark-gap transmitter Electricity Experiment Hans Christian Ørsted Magnetism Compass Electromagnetic induction Michael Faraday Faraday's law of induction Maxwell's equations James Clerk Maxwell Mahlon Loomis Royal Society Etheric force Telegraphy Thomas Edison Elihu Thomson David E. Hughes Metal detector Telephone Coherer Fermo Iron Temistocle Calzecchi-Onesti Édouard Branly Heinrich Hertz Partial differential equation Transverse wave Wave equation Murray, Kentucky Nathan Stubblefield Landell de Moura Missouri St. Louis, Missouri Tesla Wireless Franklin Institute National Electric Light Association Philadelphia Vacuum tube Electrical conduction
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