|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|Somerville (sŭm'ər-vĭl') Pronunciation Key
Scottish astronomer and mathematician who wrote expository works on mathematics, physical geography, microscopic science, and astronomy. Her writings explained complex scientific ideas to the general public through simple illustrations and experiments that the average reader could easily understand.