感光乾版

感光乾版是底片问世前最主要的影像记录载体。这种以金属或玻璃为基底、涂覆感光膠體的硬质板材，曾是银版摄影法等早期摄影工艺的核心材料。其中玻璃乾版（其厚度较普通窗玻璃更薄）因成像清晰、性能稳定，于19世纪末得到广泛应用。尽管在20世纪逐渐被胶片取代，但乾版技术在特殊科研与医疗领域仍持续使用至20世纪末期。

参考文献

 Peter Kroll, Constanze La Dous, Hans-Jürgen Bräuer: "Treasure Hunting in Astronomical Plate Archives." (Proceedings of the international Workshop held at Sonneberg Observatory, March 4 to 6, 1999.) Verlag Herri Deutsch, Frankfurt am Main (1999), 
 Wayne Osborn, Lee Robbins: "Preserving Astronomy's Photographic Legacy:  Current State and the Future of North American Astronomical Plates."  Astronomical Society of the Pacific Conference Series, Vol. 410 (2009), 
 Pisgah Astronomical Research Institute (PARI) Astronomical Photographic Data Archive (APDA) https://www.pari.edu/research/adpa/

Category:放射成像
Category:医学成像
Category:粒子探测器
Category:摄影器材