Simulation of light beams passing through a glass block. The rays are refracted by the block but because its surfaces are parallel, the emerging rays are parallel to the incident rays.
Illustration ID: GLASS_BLOCK_TOP
copyright Russell Kightley
Illustration size: 64.0 Mpixels (183 MB uncompressed) - 8000x8000 pixels (26.7x26.7 in / 67.7x67.7 cm at 300 ppi)