World of Engineering
@engineers_feed · Feb 8, 2023
How many π digits do we need?
3.1415 ➡️ design the finest engines
3.1415926535 ➡️ obtain the circumference of the Earth within a fraction of an inch
3.141592653589793238462643383279502884 ➡️ measure the radius of the universe to an accuracy equal to the size of a hydrogen atom
Elon Musk
@elonmusk
Arguably, the practical limit of pi is the number of digits required to measure radius of the universe in units of Planck length
05:20 AM · February 8, 2023 · 4.9M views
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