Description
Illustrations of optical phenomena: seven figures (numbered 135-141) of spectral distribution and intensity in Frauhofer patterns produced by white light shone through a variety of apertures
which probably explains why Disraeli is depicted holding a shepherd's crook
by Edward TC Werner
' There is a manuscript negative number: '195009' and the image is dated '16
' Plate 3 facing p
Early German Air Show Poster Size:XXL: 150 x 100cm Illustrations of optical phenomena: seven
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