GENERAL KNOWLEDGE

Detailed explanation-1: -The present car windshields were also invented by accident.

Detailed explanation-2: -The first laminated glass put in cars had a layer that would darken and become brittle over time. In the late 1930s, manufacturers began using Polyvinyl Butyral (PVB) to make auto glass clearer and stronger as well as to help block sound and harmful ultraviolet rays. By 1937, safety glass became mandated for all cars.

Detailed explanation-3: -In 1909 the first successful patent for safety glass was taken out in France by an artist and chemist, Édouard Bénédictus, who used a sheet of celluloid bonded between two pieces of glass.