Subject ASC00009mc
Recreative Science.
1, Page 176 (1860)
Natural History Museum Library, London
BHL Page 2539577
Keywords
Disc table coloured papers disc-table revolving patterns coloured plane Eyepiece DIY Invention Light patterns mechanism rotating disk shapes cross-section gears stand key cone rotating disks Optical mechanism chromatype clockwork homemade detail chromascope aberration scheme wheel cardboard spindle black pattern machine screw hand Optical device whole view Internal mechanism Close up top part of instrument clockwork chromatype cross section