a sex when a male is on top of a female
light travels in straight paths called rays
When an object travels in a straight line and at the same speed, we call it an uniform speed. When an object travels at different speeds, we say that the object is at non uniform speed.
I would call it "the speed of the wave".
Lignt being a wave must express the phenomenon of bending at the edges. But this is not easily observed. This is mainly because of the shorter wavelength of light. Hence we come to the conclusion that light never bends and always travel in straight lines. This is what we call rectilinear propagation of light. This was successfully explained by Young and Fresnel with the concept of half period zones. Also light waves considered as transverse in nature.
The path of least resistence
light travels in straight paths called rays
rays.
Straight
Perpendicular lines.
That is called a light-year.
Because he thought they were unnatural.
Yes. Light traveling in the same medium, travels in a straight path. It gets refracted only when it hits obliquely with another medium.In olden days scientists thought light is supposed to travel as a ray. Ray meant continuous passage of tiny particles.As understanding gets evolved now we think that light is an electromagnetic wave(not a mechanical wave).Mechanical wave certainly needs a material medium to get propagated where as the electromagnetic wave can even pass through free space, usually we call as vacuum.Its gets diffracted, that is bent at the edges of obstacles, when it meets such.cii nahh.
Wait, it is not why. It's how. Shadows are formed because light travels in a straight line. Try to understand it yourself. second answer: when something come in the way of light it, light is not able to travel anymore. and the areas where is no light, it is dark and we call this dark area as shadow
Light travels through what is fiber optic cabling. The cables are internally filled with long flexible tubes that are made of glass. The laser light travels through an individual glass tubing.
Tangent.
A few light lines running straight across the page may mean that the photoreceptor is scratched. You should call the machine in for service.
that is one light year