2007-03-14 22:48:07 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
They are bounced off the ionosphere, high up in the Earth's atmosphere. During other seasons the ionosphere is not charged so highly, so the signals pass right through it.
2007-03-15 02:14:52 · answer #1 · answered by Timbo 3 · 0⤊ 0⤋
all the radio and television declares by way of fact the 1st commercial radio broadcast in 1920 have been traveling out into area in an increasing sphere. to no longer any particular part of area. the reason being that radio and television are electromagnetic radiation, purely like mild or infrared or ultraviolet or xrays or gamma rays. stay television would be recorded by using the broadcasting station or community - that's the call of the community.
2016-12-14 19:37:08 · answer #2 · answered by Anonymous · 0⤊ 0⤋
In that season the high layers of atmosphere is highly ionised. That's wy hey can reflect radio waves (which goes to spase) back to earth, and you can receive them at more bigger distances
2007-03-15 00:00:11 · answer #3 · answered by cpt. Star 2 · 0⤊ 0⤋