Prism shaped pavement light redirecting sunlight through total internal reflection. Credit: glassian.org In the beginning, vault covers used round plano-convex lenses or even just flat glasses.

They reflect off the rear face ... This means that the light leaving the prism is spread out into its different colours, a process called dispersion. This experiment is recorded as first being ...

We can see this by splitting the sunlight using this glass prism. The colours are the same ... This T-shirt is white because all the colours of light reflect off it. This T-shirt is red because ...

However, it didn't take me long to notice that something interesting was going on with the telephoto cameras. Both use the same sensor, and they both have the same focal length, but the RSR has a much ...

Newton was also the first to understand the rainbow, and to refract white light with a prism into its component ... Newtonian telescopes use a reflecting mirror to avoid the colour distortion ...