Glossary
Quantum:- smallest indivisible unit of radiant energy.
Quarterplate:- negative or print format measuring 3 ¼ x 4 ¼ inches. It's one quarter the size of a full plate (8 ½ x 6 ½ inches).
Quartz-iodine lamp:- compact tungsten filament lamp designed to maintain its color temperature and light intensity throughout its working life.
Glossary/Terms©Glamour- Photography Ltd OnLine 2009