stupid question

[John Bolduc]

> Why can you hear radio stations from other parts of the country at night

Not such a stupid question. Although the ability to receive Medium Wave
Broadcast Band (AM) signals at night has been observed for over 100 years,
and by the general public since the early 1920's, having a better
understanding why has only been around since the space age.

In simple terms there is an electrical mirror way up in the sky. During
the day the sun absorbs most of the mirror, but at night the electrical
mirror comes back and reflects signals (skywave) back to earth.  Sorry my
wife is nagging me to go to the store, so I'll to end my explanation here!


John B
Derry NH