this post was submitted on 13 Mar 2024
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I often wonder, when is the last time that pi was actually measured, and what was the precision level?
I suppose that any rounding on the measure will have a significant impact. How do scientist alway end up with the same value to thousand of digits?
Although there are measurement techniques that do appropriate pi, that's done mostly because it's interesting. Typically one calculates pi, not measures it. The calculation can't ever be completed but the more you do, the better your approximation. One method is this https://en.m.wikipedia.org/wiki/Leibniz_formula_for_%CF%80
That sort of stuff is done a lot. However, you don't need all that many digits before adding more digits doesn't meaningfully affect calculations. https://www.jpl.nasa.gov/edu/news/2016/3/16/how-many-decimals-of-pi-do-we-really-need/