When the ionosphere increases its height at night, radio wave propagation improves as higher frequencies are able to reflect off the ionosphere back to Earth. This can enhance long-distance communication, making it easier for radio signals to travel over longer distances during nighttime hours.
the ionosphere is important is the it is in the thermosphere
ionosphere
Another name for the ionosphere is the thermosphere.
The other name for ionosphere is thermosphere.
There are some bicycle tires that have a reflective strip around the side wall. This help the cyclist be more visible at night.
Ionosphere
reflective gear such as reflective jackets ECT.
The ionosphere bends radio waves . . . most go out into space, but a fair number hit the earth far away, and are reflected back up to the ionosphere. Radio operators call this phenomenon, "The skip".
AM signals can be heard for great distances under certain conditions due to a phenomenon called skywave propagation. When AM signals are broadcast, they can bounce off the ionosphere and be refracted back to Earth, allowing them to travel much farther than the line-of-sight limit. This phenomenon is more pronounced at night when the ionosphere is more reflective.
Ionosphere
...AM stations transmit hundreds of miles at night. This extended transmission is possible is because of the ionosphere -- one of the layers of the atmosphere. It is called the ionosphere because when the http://wiki.answers.com/sun.htmrays hit this layer, many of the http://wiki.answers.com/atom.htmthere lose electrons and turn into ions.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.­
they have reflective mirror like tissues at the back of there eye, catches more light. But at night, they usually move by smell, not sight
Halloween safety is very important for children. Make them more visible at night with reflective tape, flash lights, and glow sticks that can be worn around the neck. There are also glow in the dark costumes and treat bags that can help others see your child at night.
If you mean short waves, the answer is that the lower layer of the ionosphere (D layer) dissapears at night so short wave signals then bounce off a higher layer (F1 or F2) of the ionosphere and can travel further.
It's a tyre with a reflective stripe on the tyre side. Makes the rider more visible for cars during night riding.
Reflective gears are needed at night because they allow passing car's headlights to reflect off them and reveal your presence to drivers who might not have seen you otherwise.