| RefNo | AP/78/10/2 |
| Level | Item |
| Title | Unpublished diagrams, experimental apparatus and results by Ridsdale Ellis |
| Creator | Ellis; Ridsdale (fl 1911) |
| Date | 1911 |
| Description | Nine diagrams in black ink showing circuits and equipment used by Ellis in investigations into the electrical charge of oil emulsions, and graphs showing experimental results.
Subject: Chemistry / Physics |
| Extent | 9p |
| Format | Diagram |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |