The answer is B. Good luck! :D
Not only was he a well-known painter, he was also a Brilliant inventor.
Answer:
Lillian Gish, under D. W. Griffith's gudience
Answer:
Glass is the most common material used to construct lens elements, due to its good optical properties and resistance to scratching. Other materials are also used, such as quartz glass, fluorite, plastics like acrylic (Plexiglass), and even germanium and meteoritic glass.
