Windshield

The windshield (North American English) or windscreen (Commonwealth English) of an aircraft, car, bus, motorbike or tram is the front window, which provides visibility whilst protecting occupants from the elements. Modern windshields are generally made of laminated safety glass, a type of treated glass, which consists of, typically, two curved sheets of glass with a plastic layer laminated between them for safety, and bonded into the window frame. The windshield (North American English) or windscreen (Commonwealth English) of an aircraft, car, bus, motorbike or tram is the front window, which provides visibility whilst protecting occupants from the elements. Modern windshields are generally made of laminated safety glass, a type of treated glass, which consists of, typically, two curved sheets of glass with a plastic layer laminated between them for safety, and bonded into the window frame. Motorbike windshields are often made of high-impact polycarbonate or acrylic plastic. Windshields protect the vehicle's occupants from wind and flying debris such as dust, insects, and rocks, and provide an aerodynamically formed window towards the front. UV coating may be applied to screen out harmful ultraviolet radiation. However, this is usually unnecessary since most auto windshields are made from laminated safety glass. The majority of UV-B is absorbed by the glass itself, and any remaining UV-B together with most of the UV-A is absorbed by the PVB bonding layer.