shadowgraph

[shad-oh-graf, -grahf]
noun
1.
a picture produced by throwing a shadow, as of the hands, on a lighted screen, wall, or the like.
3.
a radiograph.

Origin:
1885–90; shadow + -graph

shadowgraphic [shad-oh-graf-ik] , adjective
shadowgraphist, noun
shadowgraphy, noun
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World English Dictionary
shadowgraph (ˈʃædəʊˌɡrɑːf, -ˌɡræf)
 
n
1.  a silhouette made by casting a shadow, usually of the hands, on a lighted surface
2.  another name for radiograph

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
The left panel shows a shadowgraph image of a subcritical internal wave breaking against a sloping boundary.
Optical components to take a shadowgraph image of the mixing region have also been installed.
Norwood visualized the flow with shadowgraph pictures.
The flow has been visualized with conventional schlieren and shadowgraph.
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