Windshield
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The windshield or windscreen of an aircraft, automobile, or motorcycle, is the front window. Modern windshields are generally made of two sheets of curved glass with a plastic layer laminated between them for safety. Windshields protect the vehicle's occupants from wind, temperature extremes, and flying debris such as dust, insects, and rocks.
If the windscreen is below 20 cm of height it is instead called an aeroscreen since it only deflects the wind. The twin aeroscreen setup (often called brooklands) was popular among older sports and modern cars in vintage style.
In many places, laws restrict the use of heavily tinted glass in vehicle windshields; generally, laws specify the maximum level of tint permitted.
In aircraft windscreens a current is applied through a conducting layer of tin(IV) oxide to generate heat to prevent frost.