Gustav Robert Kirchhoff, German physicist, c 1860s.

Petschler, H, & Co

 
Gustav Robert Kirchhoff, German physicist, c 1860s.
4 0 c m
 
27cm
actual image size: 19cm x 32cm

Description

Carte de visite photograph by H Petschler & Co. Gustav Robert Kirchhoff (1824-1887) distinguished himself in many fields, notably in the study of electricity, heat, optics and especially for his contributions to spectrum-analysis. He formulated Kirchhoff's law of radiation, the key to the whole thermodynamics of radiation, and his electromagnetic theory of diffraction is today still the most commonly used in optics.

© Science Museum / Science & Society Picture Library

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