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Earlier quoted context omitted.
I would think most slide rules have a marker for pi that make this even easier.
Given how slide rules work, there would have to be a great number of marks, for the same reason that there cannot be only one unique ratio of integers that approximates Pi.
Earlier quoted context omitted.
Given how slide rules work, there would have to be a great number of marks, for the same reason that there cannot be only one unique ratio of integers that approximates Pi.
I do not think you have thought that through. You need only one mark for PI on every part of a sliderule to multiply or divide by pi. See for example http://en.wikipedia.org/wiki/File:Slide_rule_cursor.jpg
My remark was only in the context of the present conversation, where Pi is representable by the ratios of various integers.
I used a lot of slide rules during my years as a NASA engineer, but none of those I owned had marks for physical constants -- too bad, because it's a very good idea.
