Image:Hertz schematic0.PNG

From Wikipedia, the free encyclopedia

Image
File history
File links

Hertz_schematic0.PNG‎ (6KB, MIME type: image/png)

[edit] Summary

Following Michelson's 1881 experiment (precursor to the 1887 Michelson-Morley experiment) which did not detect the existence of aether drift, Hertz used the Maxwell's equations to take this view into account. In 1887 the German physicist further experimented with radio waves in his laboratory. Hertz used a rumhkoff coil driven spark gap and one meter wire pair as a radiator. Capacity spheres were present at the ends for circuit resonance adjustments. His receiver a precursor to the dipole antenna, a simple half-wave dipole antenna for shortwaves. A dipole antenna, invented by Heinrich Rudolph Hertz around 1886, is an antenna with a center-fed driven element for transmitting or receiving radio frequency energy. These antennas are the simplest practical antennas from a theoretical point of view. Through experimentation, he proved that electric signals can travel through open air, as had been predicted by James Clerk Maxwell and Michael Faraday. Herts measured Maxwell's waves and demonstrated that the velocity of radio waves was equal to the velocity of light. With his apparatus configuration, the electric and magnetic fields would radiate away from the wires as tranverse waves. Hertzian cone was first described Hertz as a type of wave-front propagation through various media. His experiments help expand the field of electromagnetism transmission and his apparatus was developed further by others in the history of radio. Hertz also found that radio waves could be transmitted through different types of materials, and were reflected by others.

[edit] Licensing

I, the creator of this work, hereby grant the permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
Subject to disclaimers.

File history

Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version.
Click on date to download the file or see the image uploaded on that date.

(del) (cur) 16:16, 30 May 2006 . . Hertzian (Talk | contribs) . . 425×275 (5,279 bytes) (Following Michelson's 1881 experiment (precursor to the 1887 Michelson-Morley experiment) which did not detect the existence of aether drift, Hertz used the Maxwell's equations to take this view into account. In 1887 the German physicist further experimen)