Clear glass jar with the bottom third wrapped in tin foil, inside and outside (a); brass hook with vulcanite tip protrude through a wooden stopper; the hook continues through the stopper and ends on the other side in a brass chain(b).
Clear glass jar with the bottom third wrapped in tin foil, inside and outside (a); brass hook with vulcanite tip protrude through a wooden stopper; the hook continues through the stopper and ends on the other side in a brass chain(b).
Number Of Parts
2
Part Names
a - jar - Size: Length 24.0 cm x Diam. 5.4 cm
b - hook - Size: Length 51.7 cm x Width 5.2 cm x Depth 3.7 cm
Provenance
Purchased by Dr. Frank Mellow and used in his home office in Uxbridge, Ontario; the Dr's main practice was on first floor; this was on the second floor where radiotherapy, massage, surgical procedures were performed with it; it was last used therapeutically in 1940 by Dr. Mellow.
Residue on the inside of the jar where the lid sits; there is some tarnish on the brass; there is dirt on the inside and outside of the jar.
Copy Type
Original
Reference Types
Book
Other
Reference Comments
Associated with 006030001; electrostatic generating machine; "Static Electricity and the uses of the Roentgen Ray", W.B. Snow, 1903, p. 12; "Electricity in Medicine", G.W. Jacoby & J.R. Jacoby, 1919, p. 126; CD #5
Research Facts
Leyden jars were used to amplify the current produced by the electrostatic generating machine; they acted as capacitors; they were placed on a shelf attached to the front of an electrostatic generating machine; then connected with brass rods and attached to the poles; the larger the Leyden jars the greater the intensity; extreme caution during this procedure is recommended; they were not usually employed; they were invented in 1745 at Leyden University in Holland.
Exhibit History
To display in Museum (North Gallery Room 1013): "Electricity and the Invisible Ray," Oct. 2006 - Feb 2016.