Tag Archives: Ronald Fishman

Dirty, dark, dangerous: coal miners’ nystagmus

Ronald Fishman Chicago, Illinois, United States   A coal miner without a headlamp digging an undercut at the coal face, using only the dim light supplied by a small flame lamp. From Snell 12 It’s dark as a dungeon and damp as the dew, Where the danger is double and pleasures are few Where the rain […]

Nature telling her secrets: the Kepler–Descartes connection

Ronald Fishman Chicago, Illinois, USA   Johannes Kepler (1571-1630) Nature tells us one secret in terms of another, and she may refuse to disclose one secret until another has been laid bare. – T.S. Kuhn1 In 1604, Johannes Kepler solved the problem of how light is refracted within the eye to produce an image on the surface […]