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Comparative depiction of the human eye and the camera obscura, 18th century. Creator: Anonymous Comparative depiction of the human eye and the camera obscura, 18th century. Private Collection.
Diagram of the electromagnetic spectrum, with visible spectrum and light highlighted separately
digging for gems and metals in australia in spring
Electromagnetic spectrum and its visible spectrum highlighted separately
Artwork of human eye and optical spectrum Conceptual image representing sight, and the range of the electromagnetic spectrum (EM) that the human eye can detect
Marvels of Electricity, 19th Century The academic study of electric machines is the universal study of electric motors and electric generators
