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A comment on Ten Lessons I Wish I Had Been Taught [pdf]. Parent comment

Re:Ten Lessons I Wish I Had Been Taught [pdf] by vismit2000 on Friday June 28, 2024 @01:14AM (#40817940)
π seconds is a nanocentury: 1 year = 3.155 × 10^7 seconds (Programming Pearls by Jon Bentley)
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Re:Ten Lessons I Wish I Had Been Taught [pdf] by mikhailfranco on Friday June 28, 2024 @11:48AM (#40821852)
This allows you to calculate the Earth's orbital velocity per second, as the orbital diameter in millions, divided by 10.

So if you think the radius is 93m miles, you get 18.6 mile/sec, but if you are not American, you think the radius is 150m km, so 30 km/s.

https://en.wikipedia.org/wiki/Earth's_orbit

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