| RefNo | RHB/5/2/2 |
| Previous numbers | E.61-E.79 |
| Level | File |
| Title | Photons (radio astronomy) |
| Date | 1949-2002 |
| Description | Material regarding the Hanbury Brown-Twiss effect and quantum optics more generally. |
| Extent | 21 folders. |
| AccessStatus | Open |
| AccessConditions | Restrictions apply - items remain closed for 30 years from date of creation. |