5.5.16 explain that light will travel in a straight line until it strikes an object, which may alter the path (e.g., reflection from a mirror, refraction from a lens.)
(it; strikes; an object, which may alter the path (e.g., reflection from a mirror, refraction from a lens) (an object; may alter e.g.; the path) (5.5.16; explain; that light will travel in a straight line until it strikes an object,) Context(5.5.16 explain,List([0, 14))):(that light; will travel; in a straight line; T:until it strikes an object)
5.5.16 explain,List([0, 14))
it an object 5.5.16 that light
strikes may alter e.g. explain will travel
an object, which may alter the path (e.g., reflection from a mirror, refraction from a lens
the path
that light will travel in a straight line until it strikes an object,
in a straight line T:until it strikes an object