| Reference number | PP/10/56/2 |
| Previous numbers | PP/42/57 |
| Level | Item |
| Title | Diagrams, experimental equipment by Thomas Andrews |
| Date | 1 June 1887 |
| Description | Two diagrams, labelled figures 1-2, showing the apparatus used by Andrews in his investigations into the electrochemical effects on magnetising iron. Parts of the diagrams are labelled A, B, C and W. In the accompanying paper, Andrews describes the apparatus as thus: 'Two pieces were adjacently cut from a long finely polished iron rod, so that the pieces might as near as practicable be of identical chemical composition and molecular constitution. After being firmly placed and adjusted as to equal length, &c., in the wooden supporting frame W, they were immersed to an exactly equal depth in the solution contained in the U-tube, which latter was also rigidly supported by a stand. In the duplex experiments made with apparatus fig. 2, the U-tube was immersed in a large volume, four pints, of cold water to ensure equal temperature conditions during experimentation for the respective solutions in each limb, the cold water being maintained in steady circulation around the tubes. The rods were connected in circuit with a sensitive galvanometer, having a resistance of 521 ohms, and of known calibration, the galvanometer being under constant telescopic observation during the experiments, and the normal galvanic action between the two bars previously observed in every experiment.'
Subject: Scientific apparatus and instruments
A print of this diagram was published in volume 42 of the Proceedings of the Royal Society alongside the paper 'Electrochemical effects on magnetising iron'. |
| Extent | 1p |
| Format | Diagram |
| Physical description | Ink on paper |
| Digital images | View item on Science in the Making |
| Access status | Open |
| Related material | DOI: 10.1098/rspl.1887.0098 |
Fellows associated with this archive
| Code | Name | Dates |
| NA6955 | Andrews; Thomas (1847 - 1907) | 1847 - 1907 |