Browse Items (3436 total)

Glass tube with brass ends; with ball terminals; inside tube is spiral of small metal discs each seperated by gap of less than 1 mm; when tube is placed across an electrostatic generator, a spiral discharge is seen around inside of tube caused by…

Voltage series resistor which alters the voltage range of a Unipivot galvanometer when connected to it. A black metal box with 2 plastic screw connectors (black and red) for wires, or for another resistor to connect to, and 2 metal plate connectors…

in wood, small trestle table or stool with crossed supports at each end, brass screws, possibly for equipment support

three large bulbs with liquid mercury and alcohol are mounted vertically with brass latches against a wooden board and white card. No scale.

Hand held brass microscope, part of a set of miniature optical instruments. Focal length of approx. 1.5" (38mm). Has a clamp so can be mounted to a stand.

glass dome with brass neck piece and screw hole, possible for suspending an apparatus inside or attaching a tube

Voltage series resistor which alters the voltage range of a Unipivot galvanometer when connected to it. A black metal box with 2 plastic screw connectors (black and red) for wires, or for another resistor to connect to, and 2 metal plate connectors…

mounted on three brass adjustable feet, a sub rectangular black wooden base holds two upright hinged wood plates. The plates each have terminals connecting to flat coils. On one side is a viewing window into the centre of the plates. A hollow rod…

two pieces of fur and fleece, possibly lamb and artificial fur. For stroking glass rods to create electrostatic charge

Voltage series resistor which alters the voltage range of a Unipivot galvanometer when connected to it. A black metal box with 2 plastic screw connectors (black and red) for wires, or for another resistor to connect to, and 2 metal plate connectors…