Assertion: gauss | /r/HasProperty | accompanied by one of his students
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text: In 1816 Gauss, accompanied by his ten-year-old son and one of his students, took a five-week trip to Bavaria, where he met the optical instrument makers G. von Reichenbach, T. L. Ertel (owner of Reichenbach’s firm), J. von Fraunhofer, and J. von Utzschneider (Fraunhofer’s partner), from whom his best instruments were purchased.