Browse Items (3400 total)

glass dome with brass neck piece and large brass knob

a glass apparatus dome cover with green velvet covered rim

one of a pair, circular base weighted with lead, the vertical tapers upward from a bulbous bottom, terminating with a wing nut for holding a telescopic inner section of glass rod

glass specific gravity hydrometer, red lead weighted, scale 1200 to 1300. In cardboard tube

Used carbon filament lamp (16 cp?) with standard bayonet cap. Marked "BTH Edison". Conspicuous darkening of inside of bulb

four rods for stroking with fur to produce electrostatic charge. Materials differ and are probably not amber (Gr electrum). Wrapped in grey woven material

box, wooden frame with glass front and back. Brass rod connects a gold leaf to a top touch disc. Copper leaf against one side connected to an external thumb nut contact. Silver foil lining.

grouped for convenience, four wooden plates of irregular shape. Holes are possibly for points of suspension in centre of gravity experiments. Different woods and various quality of finish

a test tube with rubber bung filled with grass stems, possibly spills for burning to detect presence of gasses

a cylindrical glass laboratory jar with rimmed top and base