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DR JON HERAS /SCIENCE PHOTO / CORBIS

Illustration showing the absorbance of electromagnetic waves by the Earth's atmosphere.

2 posted on 07/06/2013 4:54:31 AM PDT by NYer ( "Run from places of sin as from the plague."--St John Climacus)

3 posted on 07/06/2013 4:59:57 AM PDT by Vaquero (Don't pick a fight with an old guy. If he is too old to fight, he'll just kill you.)

Nice picture, thanks. I think the word you are looking for is “absorption” or maybe attenuation.

The interaction of radio waves with the atmosphere is highly dependent on angle of incidence, rainfall and time of day. For instance, during daylight hours, AM radio waves are absorbed in the stratosphere, making AM daytime radio a local medium. At night when the stratosphere deionizes, AM radio zips right through the stratosphere, to ionosphere, which looks like a highly polished mirror to AM and signals can travel half way round the globe. (WBZ-AM 1030 Boston has been received in New Zealand, for instance.)

Anyway, believe it or not, it’s more complicated than that simple picture.

5 posted on 07/06/2013 5:13:41 AM PDT by Lonesome in Massachussets (Doing the same thing and expecting different results is called software engineering.)

"Run from places of sin as from the plague."

Yes. And decadence is a place of sin.

The decadent do not even believe that there is such a thing as sin, so lost are they.

9 posted on 07/06/2013 5:21:29 AM PDT by Savage Beast (The forces of decadence are the forces of evil.)

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