Accession No
1793
Brief Description
solar microscope; circa 1800
Origin
Maker
Class
microscopes
Earliest Date
1800
Latest Date
1800
Inscription Date
Material
glass; metal (brass); wood (lignum vitae)
Dimensions
box length 225mm; breadth 139mm; height 175mm
Special Collection
Heywood collection
Provenance
Purchased from the H.Heywood collection under estate duty exemption benefit with the assistance of a Science Museum grant-in-aid.
Inscription
Description Notes
Square [lignum vitae] plate with pinned joint to rectangular [lignum vitae] framed mirror circular piece set in frame with toothed brass rim notched into a second toothed ring with key handle; brass rod with ring handle to rod on mirror adjusts angle; brass body covered with black lignum vitae; screw fit condenser lens in brass cell; draw tube with screw thread to tapered snout (no optics extant).
References
Events
Description
To work a solar microscope, the mirror was placed outside a room via a hole in the window shutter, whilst the barrel remained in the room. The mirror reflected the sunlight through condensing lenses, the slide containing the object and projection lenses. The image was then projected onto a screen in the room.
03/07/2009
Created by: David Bud on 03/07/2009
FM:42809
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