RefNo | PP/5/18 |
Previous numbers | PP/37/21 |
Level | File |
Title | Paper, 'On a gravity Daniell's cell of very small internal resistance' by J T [James Thomson] Bottomley |
Date | 1884 |
Description | Bottomley writes: 'I beg leave to describe a new arrangement of gravity Daniell’s cell which I have found manageable and convenient for supplying continuously and steadily a very powerful current of electricity. It has proved of great service for graduating ampere-meters and for such purposes [...] The outer containing vessel is a large shallow tray of wood, very strong, but quite roughly made, and lined with sheet lead. The tray is 3¾ inches deep, and with this small depth the lead can be beaten in, and autogenous soldering is unnecessary. The lead tray is very carefully varnished with spirit varnish, several coats being applied; and on the bottom of it is laid a thin sheet of copper (0.2mm thick), or rather several sheets thoroughly connected together, as I have not been able to obtain a single sheet of copper large enough for my purpose. The copper sheet, varnished on the lower side, is attached in many places to the lead lining of the trough by soldered slips of copper, the solderings being thoroughly coated with varnish or marine glue. This copper sheet forms the copper plate of the Daniell’s cell.'
Annotations in pencil and ink. Includes one page of diagrams and a photograph of the cell.
Subject: Electricity / Scientific apparatus and instruments
Received 29 May 1884. Read 19 June 1884.
A version of this paper was published in volume 37 of the Proceedings of the Royal Society as 'On a gravity Daniell's cell of very small internal resistance'. |
Extent | 14p |
Format | Manuscript |
Diagram |
Photograph |
PhysicalDescription | Ink and graphite pencil on paper |
Digital images | View item on Science in the Making |
AccessStatus | Open |
RelatedMaterial | DOI: 10.1098/rspl.1884.0031 |
Fellows associated with this archive
Code | PersonName | Dates |
NA8724 | Bottomley; James Thomson (1845 - 1926) | 1845 - 1926 |