Hertzian wave
Quick Summary
Hertzian waves, also known as radio waves, are a type of electromagnetic radiation produced by the oscillation of electricity in a conductor, such as a radio antenna. These waves range in length from millimeters to kilometers. German physicist Heinrich Hertz experimentally demonstrated the existence of these waves in the late 1880s, confirming James Clerk Maxwell's theory of electromagnetism. Hertz showed that these waves travel in straight lines and can be reflected, similar to light waves. The unit for the frequency of these waves, the hertz (Hz), is named in his honor. Hertzian waves are fundamental to modern communication technologies like radio and radar.12345
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Lee de ForestLifeā¦developed an electrolytic detector of Hertzian waves. The device was modestly successful, as was an alternating-current transmitter that he designed. In 1902 he and his financial backers founded the De Forest Wireless Telegraph Company. In order to dramatize the potential of this new medium of communication, he began, as earlyā¦
Read Moreā¦developed an electrolytic detector of Hertzian waves. The device was modestly successful, as was an alternating-current transmitter that he designed. In 1902 he and his financial backers founded the De Forest Wireless Telegraph Company. In order to dramatize the potential of this new medium of communication, he began, as earlyā¦
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Aleksandr Popovā¦and demonstrated the transmission of Hertzian wavesāas they were then termedābetween different parts of the University of St. Petersburg buildings. Evidence suggests that on that occasion the words āHeinrich Hertzā were transmitted in Morse code and that the aural signals received were transcribed on a blackboard by the societyās president,ā¦
Read Moreā¦and demonstrated the transmission of Hertzian wavesāas they were then termedābetween different parts of the University of St. Petersburg buildings. Evidence suggests that on that occasion the words āHeinrich Hertzā were transmitted in Morse code and that the aural signals received were transcribed on a blackboard by the societyās president,ā¦
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Ernest RutherfordUniversity of Cambridgeā¦predicted the existence of such waves, and between 1885 and 1889 the German physicist Heinrich Hertz had detected them in experiments in his laboratory. Rutherfordās apparatus for detecting electromagnetic waves, or radio waves, was simpler and had commercial potential. He spent the next year in the Cavendish Laboratory increasing theā¦
Read Moreā¦predicted the existence of such waves, and between 1885 and 1889 the German physicist Heinrich Hertz had detected them in experiments in his laboratory. Rutherfordās apparatus for detecting electromagnetic waves, or radio waves, was simpler and had commercial potential. He spent the next year in the Cavendish Laboratory increasing theā¦
Read More