This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
RitterJohannWilhelm. en Johann Wilhelm Ritter December January was German chemist physicist and philosopher He is shown here in the Bavarian Academy of Sciences uniform jlc jst go jp JSTAGE from Google Author This image or other media file is in the public domain because its copyright has expired PDold Johann Wilhelm Ritter