|1.||Billy. born 1957, British rock singer and songwriter, noted for his political protest songs; recordings include Between the Wars (1985), Workers' Playtime (1988), Mermaid Avenue (1998), and England, Half English (2002)|
|2.||Melvyn, Baron. born 1939, British novelist, broadcaster, and television executive; presenter of The South Bank Show since 1978|
|3.||Sir William Henry , 1862--1942, British physicist, who shared a Nobel prize for physics (1915) with his son, for their study of crystal structures by means of X-rays|
|4.||his son, Sir (William) Lawrence, 1890--1971, British physicist|
|a scrap or morsel of food left at a meal.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|Bragg (brāg) Pronunciation Key
British physicist who invented the x-ray spectrometer, a device used to measure x-ray wavelengths. With his son, the physicist Sir William Lawrence Bragg (1890-1971), he developed the technique of x-ray crystallography, used to determine the atomic structure of crystals. Father and son were awarded a joint Nobel Prize for physics in 1915 for this work.