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Historical changes to Planck constant.


avicenna

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https://arxiv.org/abs/1409.7597

Numerous mentions of historical measurements. Lots of references for follow-up

 

Steiner’s paper on research gate (though on my iPad it renders without spaces. But the figures have info, too)

https://www.researchgate.net/publication/233948351_History_and_progress_on_accurate_measurements_of_the_Planck_constant

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Yes.This Steiner paper exactly satisfy what I am looking for. It gave the first value of h to around end 1910. It also gave the method used to measure h historically, basically the photoelectric effect in the earlier years. I am not able to access any peer reviewed articles. Thanks.

I posted the same question over physics stack exchange. Because they can't give me the information, they insist that there is no reason for me to to look for such information as the "different values should not be comparable". At other time physics stackexchange do give good answers.

   

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