Unequal refrangibility of two differently coloured lights Size:Standard: 14.8 x 10.5cm An accident in which a

An accident in which a spectator was injured in 1925 led to the banning of all speed events on public roads

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Unequal refrangibility of two differently coloured lights Size:Standard: 14.8 x 10.5cm An accident in which aExperiment to demonstrate the unequal refrangibility of two differently coloured lights, an illustration of Newton's first proposition, "Lights which differ in colour differ in refrangibility". From Contributions to solar physics, by J Norman Lockyer (London, 1874). Original: engraving. 1874