| Reference number | AP/19/15/2 |
| Level | Item |
| Title | Unpublished diagram, a luminous point emitting rays by G H S [George Henry Sacheverell] Johnson |
| Date | 1835 |
| Description | Labelled diagram of a luminous point 'Q' emitting light rays onto a concave reflecting surface, showing the directions in which the rays are reflected. |
| Extent | 1p |
| Format | Diagram |
| Physical description | Ink on paper |
| Access status | Open |
Fellows associated with this archive
| Code | Name | Dates |
| NA6326 | Johnson; George Henry Sacheverell (1808 - 1881) | 1808 - 1881 |