Hertz's Experiments

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Harry_Shan
Posts: 5
Joined: Mon Apr 07, 2014 11:44 am

Hertz's Experiments

Postby Harry_Shan » Sun May 18, 2014 11:17 am

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Last edited by Harry_Shan on Mon Mar 30, 2015 5:24 pm, edited 1 time in total.

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joe
Posts: 745
Joined: Fri Aug 29, 2003 11:57 am
Location: Sydney

Re: Hertz's Experiments

Postby joe » Mon May 19, 2014 10:41 am

I'm a physicist, not a historian, but I can answer some of this.

Hertz used VHF or UHF, so wavelengths of a metre or so. These would diffract around corners well: they require fairly large objects to cast shadows. I've not heard of him using single slit diffraction. The Hertz wiki page
http://en.wikipedia.org/wiki/Heinrich_Hertz
has a nice diagram of his spark gap circuit.

Regarding Maxwell and Hertzian waves, Physclips shows simple but modern measurements of speed of light and speed of UHF radio at
http://www.animations.physics.unsw.edu.au/light/nature-of-light

Joe


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