contestada

Please help! You recently bought a radio at a garage sale. The radio is old and doesn’t work very well. You have a difficult time getting a station during the day. You are just about to throw out the radio when late at night you turn it on. It gets perfect reception and sounds crystal clear. Using what you have learned about the ionosphere and radio waves in the lessons, explain why the radio works at night and does not work during the day.

Respuesta :

Frode
The radio is old and that makes it most likely just AM band. 

AM waves usually "bounce" off the atmosphere during the night and go longer distances. You see this especially with high wattage stations like MLS Miami (this can be picked up in many nearby states).

When it is day though, most of the other stations are of "low wattage" and must reduce signal at night.

Otras preguntas