Image: Heinrich Kayser
Heinrich_Kayser.jpg (251 × 350 pixels, file size: 10 KB, MIME type: image/jpeg)
Description: Heinrich Kayser, German physicist and spectroscopist
Title: Heinrich Kayser
Credit: Bavarian Academy of Sciences and Humanities
Author: Bavarian Academy of Sciences and Humanities
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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