Reference numberMS/928/2/32
TitleLetter from Carl Braun, Mariaschein, [Bohemia], to Charles Vernon Boys
Date4 January 1902
DescriptionBraun relates how his primary difficulties in 1901 were technical ones. He finally resolved to make experiments with a vacuum of 3mm. Despite his efforts this was a failure. He followed Boys's advice in making deflection observations but the results were perplexing. He gives an account of these, with sketches. The two better observations gave G=5.524. Finally he made an observation using the oscillation method that he thought was better - G=5.5225 + or - 0.005. A small correction would put the value even nearer to 5.527. He intends to go for a hydropathic cure and Boys should write to him in Stirie. He will continue upon his return. Gives conjectures on why the Geissler air pump may not have performed well.
Physical descriptionOn paper
Access statusOpen
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