The rays travel through adjacent areas of the sample, separated by the shear.

The ordinary ray travels with the same speed no matter what the direction; this is a consequence of the plane in which it is polarized.

Greg Bradburn If the sun's rays travel through the solar system without interacting, they do not leave any energy behind.

Some rays travel a twisted course, like ray 1 at left.

When cosmic rays travel through this medium, they sometimes interact with these particles.

The farther a cosmic ray travels through space, the greater chance it has of running into one of these particles.

As time progresses, the sphere grows as the light rays travel through space away from the star.

The two reflected rays now travel in the same direction to be detected.

However the ray reflecting off the bottom surface travels a longer path.

He did not find one, which he calculated meant that the rays were traveling very slowly.