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The 22 pages that link to Photographic plate, each with the reason it gives.

• Henrietta Swan LeavittRelated: Leavitt studied stellar brightness in images recorded on glass plates.

• Variable starRelated: Comparing plates from different dates first exposed many long-term stellar brightness changes.

• Harvard College ObservatoryRelated: Glass plates preserved star fields for repeated measurement and comparison.

• Henry Draper CatalogueRelated: The catalogue’s classifications were based on photographic records of stellar spectra.

• Edward Charles PickeringRelated: The adoption of glass plates gave Pickering’s program a durable record of the changing sky.

• Gerard KuiperRelated: Kuiper discovered Miranda and Nereid by examining astronomical plates.

• Henri BecquerelRelated: Becquerel used blackened photographic plates to reveal radiation passing through opaque wrapping.

• Wilhelm RöntgenRelated: Röntgen used plates to capture images formed by the penetrating radiation.

• Barnard's StarRelated: Historical plates made the star's displacement measurable across epochs.

• Eugène AtgetRelated: Plate negatives enabled the detailed, carefully composed exposures in his archive.

• Francis William AstonRelated: The plate captured the lines produced by separated isotope ions.

• History of the telescopeRelated: Photography extended observation beyond what the eye could retain or measure.

• Johann Wilhelm RitterRelated: Later photographic methods made ultraviolet radiation easier to detect and study.

• Uppsala General CatalogueRelated: The catalogue drew on galaxy images recorded in photographic surveys.