Citations
Chronograph tests taken at night, 21 Sept. 1955, together with Photographic Zenith Tube (PZT) measurements of one second differences, 1955, GBR/0180/RGO 43/189, Box 20: RGO 43/187-200: Series GBR/0180/RGO 43. Cambridge University Library. |
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Chronograph tests taken at night, 21 Sept. 1955, together with Photographic Zenith Tube (PZT) measurements of one second differences, 1955, GBR/0180/RGO 43/189, Box 20: RGO 43/187-200: Series GBR/0180/RGO 43. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/2038310 Accessed May 19, 2025. |