A program or algorithm for ray tracing.

plural of ray tracer

(dated) One of the rays that emanate from the outer surface of a plate composed of any material permeable by cathode rays, such as aluminium, which forms a portion of a wall of a vacuum tube, or which is mounted within the tube and exposed to radiation from the cathode.

(physics, obsolete) infrared ray, heat ray

(computer graphics) An advanced form of ray tracing in which the imaginary light rays are not merely computed where they intersect with solid parts of the model, but also sampled and modified as they pass through space.

(physics, archaic) A weak radioactive ray arising from the impact of cathode particles with the molecules of gas contained in an X-ray tube or with the glass walls of the tube.

(physics, archaic) A radioactive ray of any kind.

(electricity) A ray consisting of a stream of electrons in a vacuum tube, that are emitted by the cathode and accelerated towards the anode by an electric field.

One of 114 counties in Missouri, United States. County seat: Richmond. Named after John Ray.

(physics) An electron ejected by recoil when a rapidly moving alpha particle or other charged particle passes through matter.