Physics
How when light rays travel outward from their light source in all directions, they are not parallel to each other, but when they approach an object they are parallel to each other?
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When light rays travel outward from their light source, they spread out in all directions, creating a diverging pattern. However, when they approach a curved surface such as a lens, they bend and refract in a way that makes them more parallel. This is because of Snell’s Law, which states that the angle of incidence (the angle at which light strikes a surface) is equal to the angle of refraction (the angle at which light is bent after it reflects off the surface). The bending of the incident light causes it to become more parallel as it approaches the object.
