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William Hyde Wollaston
ARP07111_009339P

William Hyde Wollaston

Spectroscopist observing
ARP07103_460000208

Spectroscopist observing

Magic lantern being used to project slides during a lecture on spectrum analysis
ARP07103_460000394

Magic lantern being used to project slides during ...

Spectroscopic apparatus used by used by Robert Wilhelm Bunsen
ARP07103_460000533

Spectroscopic apparatus used by used by Robert Wi...

Spectroscope of the type used by Robert Wilhelm Bunsen
ARP07103_460000534

Spectroscope of the type used by Robert Wilhelm Bu...

Joseph von Fraunhofer's
ARP07104_460001105

Joseph von Fraunhofer's

Spectroscope, 1872
ARP07102_390006444

Spectroscope, 1872