Safety lamp it. Air is drawn in and descends just inside the glass, passing up through the flame in the centre of the lamp. The outer casings of lamps have been made of brass or tinned steel. If a lamp bangs against a hard piece of rock a spark could be generated if iron or untinned steel were employed. Within months of Clanny's demonstration of his first lamp, two improved designs had been announced: one by George Stephenson, which later became the Geordie lamp, and the Davy lamp, invented by Sir Humphry Davy. Subsequently, Clanny incorporated aspects of both lamps and produced
Lamp At Midnight Lamp At Midnight Lamp At Midnight is a play that was written by Barrie Stavis, and first produced in 1947 at New Stages, New York. The play treats the 17th Century Galileo affair, which was a profound conflict between the Roman Catholic Church and Galileo Galilei over the interpretation of his astronomical observations using the newly invented telescope. By coincidence, Bertolt Brecht's play on the same theme, "Galileo", opened in New York just a few weeks before "Lamp at Midnight". Some critics now consider "Galileo" to be a masterpiece, but in 1947 the "New York Times" reviewer, Brooks Atkinson, preferred