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Author Topic: Can a radio signal be blocked by a mountain?  (Read 15150 times)

Offline labview1958

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Can a radio signal be blocked by a mountain?
« Reply #25 on: 26/05/2009 10:22:36 »
Energy of wave = hc/λ . Thus a long wave has more energy. Imagine the long wave as a stream of particles. This stream of particles are bend as they move near a mountain. On the other hand a short wave. the stream of particles are less affected by the mountains gravity. This is my alternative explanation to the standard diffraction model.
 

Offline Pumblechook

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Can a radio signal be blocked by a mountain?
« Reply #26 on: 17/07/2009 09:00:15 »
Many folks think Marconi did not cross the Atlantic by radio in 1901. 

The frequency and time of day don't add up.

Either he was mistaken or faked it.
 

Offline Pumblechook

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Can a radio signal be blocked by a mountain?
« Reply #27 on: 17/07/2009 09:03:04 »
Of course mountains block radio signals.  It is difficult getting distant FM radio and TV here in this valley.   
 

lyner

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Can a radio signal be blocked by a mountain?
« Reply #28 on: 17/07/2009 16:29:19 »
How's your Maths, labview? The energy is proportional to ONE OVER LAMBDA. That means as lambda increases, the energy decreases!!
That, of course, refers to the photon energy, which is not relevant for Radio Waves, which will never 'penetrate' a mountain. They just have to go round the edges (diffraction).
 

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Can a radio signal be blocked by a mountain?
« Reply #28 on: 17/07/2009 16:29:19 »

 

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