Saturday, August 30, 2008

Life Questions Answered: Why are you able to hear radio stations better at night?


(source)

From: How Stuff Works.com

"As it turns out, the ionosphere reflects certain frequencies of radio waves. So the waves bounce between the ground and the ionosphere and make their way around the planet. The composition of the ionosphere at night is different than during the day because of the presence or absence of the sun. You can pick up some radio stations better at night because the reflection characteristics of the ionosphere are better at night.­"

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