Exhibition Images

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Diagram of the Model DU Spectrophotometer, showing Mounting Block, Cell Compartment, Phototube Housing and Lamp Housing detached from the Monochromator
Henry Enfield Roscoe, Ph.D., On Spectrum Analysis, New York, 1869
Spectroscopic Apparatus, Steel engraving, 1869
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Spectroscopic Apparatus, Steel engraving, 1869
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Laboratory Views

Spectroscopic Apparatus, Steel engraving, 1869
Henry Enfield Roscoe, Ph.D., On Spectrum Analysis, New York
National Library of Medicine