shadowgraph

[ shad-oh-graf, -grahf ]

/ ˈʃæd oʊˌgræf, -ˌgrɑf /

a picture produced by throwing a shadow, as of the hands, on a lighted screen, wall, or the like.

shadow play.

a radiograph.

Origin of shadowgraph

First recorded in 1885–90; shadow + -graph

shad·ow·graph·ic

[shad-oh-graf-ik] /ˌʃæd oʊˈgræf ɪk/, adjective shad·ow·graph·ist, noun shad·ow·graph·y, noun

And this edge between the dark and the light then becomes the shadowgraph of this aperture of the camera.

Warren Commission (4 of 26): Hearings Vol. IV (of 15) |The President's Commission on the Assassination of President Kennedy
As you view it, lower left hand of both of the charts, shows a notch that makes the shadowgraph other than a straight line.

Warren Commission (4 of 26): Hearings Vol. IV (of 15) |The President's Commission on the Assassination of President Kennedy
Like a figure of a shadowgraph he slid through its opening, and we followed.

Nights in London |Thomas Burke
The very unfortunate name "shadowgraph" has been suggested and largely used in the newspapers, and even in medical journals.

McClure's Magazine, Vol. VI., No. 6, May, 1896 |Various

Your Commission Exhibit 753 illustrates that shadowgraph, or actually shows that shadowgraph, Mr. Shaneyfelt?

Warren Commission (4 of 26): Hearings Vol. IV (of 15) |The President's Commission on the Assassination of President Kennedy

shadowgraph

/ (ˈʃædəʊˌɡrɑːf, -ˌɡræf) /

a silhouette made by casting a shadow, usually of the hands, on a lighted surface

another name for radiograph