WITH reference to letters in NATURE of January 28 and preceding numbers, on “Phosphorescence of Photographic Plates,” it seems to be not out of place to direct the attention of those ...

133, No. 1022 (2021 April), pp. 1-11 (11 pages) We demonstrate the feasibility of determining magnitudes of stars on archival photographic plates using a commercially available scanner. We describe ...

Holography records object beam information onto a flat recording medium, such as a photographic plate, by interfering with the object beam with a separate beam called a reference beam. This ...