See also:

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 these c ...

Three-way catalyst
The three-way catalyst is an emission control device installed in the exhaust system. Exhaust gases in the three-way catalyst are burned at high temperatures to help reduce pollutants. ` ...

Three-point type seat belt
- Every person who drives or rides in this vehicle should use a seat belt at all times. - Do not ride in a moving vehicle when the seatback is reclined. This can be dangerous. The shoulder ...