See also:

Relative humidity
Corrosion will be accelerated in areas of high relative humidity, especially those areas where the temperatures stay above freezing and where atmospheric pollution exists and road salt is used. ...

High beam indicator light (blue)
This blue light comes on when the headlight high beams are on and goes out when the low beams are selected. The high beam indicator light also comes on when the passing signal is activated. ...

AM radio reception
AM signals, because of their low frequency, can bend around objects and skip along the ground. In addition, the signals can be bounced off the ionosphere and bent back to earth. Because of thes ...