BACKLIGHT: The Relativistic Raytracer

An anonymous contributor writes "Antony Searle, a physics student at the Australian National University has issued the first public release of BACKLIGHT. From his web page: "In essence a four-dimensional raytracer, [BLACKLIGHT] produces scenes demonstrating the optical effects of special relativity - delayed observation, angular aberration, Doppler shifting and the headlight effect." Check out the Movies section as well. "