Some calculations by Upton, also from 22 October. (No calculators of any sort, he's using logarithms!)
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The Carbon Lamp Filament III
- Website / File Link: http://edisondigital.rutgers.edu/document/N020256
Some calculations by Upton, also from 22 October. (No calculators of any sort, he's using logarithms!)
The Thomas Edison Papers
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