Skiopticon image from the Department of Photography at the Royal Institute of Technology. Use by Professor Helmer Bäckström as teaching material. Bäckström was Sweden's first professor in photography at the Royal Institute of Technology 1948-1958. Flourescence. (See more text in the picture) For more info: see the photographic manual of Helmer Bäckström. Nature and Culture. Others recast edition 1958-59 Chapter 147 Flourescence analysis and Flourescence photography pages 1094 and following.

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Size: 2331px × 2145px
Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No

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