Illustration showing two prisms from the Chinese book Po-wu hsin-pien (Textbook on Natural Sciences) by Benjamin Hobson, 1854. Hobson was an English writer and doctor who practiced and taught medicine in China in the 1850s. This popular book, Po-wu hsin-pien, was considered a standard introductory work in China on meterology, chemistry, physics, astronomy, georgraphy, and zoology.

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Size: 2894px × 3168px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No

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