Transparent substances ... Ray diagrams are used to show the path that light takes. The rays of light are represented using straight lines, with an arrowhead to show the direction the light ...

aren't usually transparent. Where such biological materials share the same refractive index, light rays could reflect from ...

The clear section in the centre keeps Transparent's signature style here, but there's a light that can be activated to shine through the glass with a flickering flame effect. Oh, and there's a ...