9/5/2023 0 Comments Calculate pi to digitsThis cookie is set by GDPR Cookie Consent plugin. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". Set by the GDPR Cookie Consent plugin, this cookie is used to record the user consent for the cookies in the "Advertisement" category. This cookie is used to manage the interaction with the online bots. This cookie is set by the provider Akamai Bot Manager. This cookie is managed by Amazon Web Services and is used for load balancing. Issued by Microsoft's ASP.NET Application, this cookie stores session data during a user's website visit. This cookie is used to detect and defend when a client attempt to replay a cookie.This cookie manages the interaction with online bots and takes the appropriate actions. These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. For terms of use and more information, visit our policies pages at. For the authoritative record of ScienceFriday’s programming, please visit the original aired/published recording. Fidelity to the original aired/published audio or video file might vary, and text might be updated or amended in the future. Science Friday transcripts are produced on a tight deadline by 3Play Media. That was mathematician James Grime of the YouTube series a Numberphile on why we only need 39 digits of–Ĭopyright © 2016 Science Friday Initiative. I missed a number there, sequence of 39 digits of pi. Now, it turns out that we only need to use 38 decimal places to calculate the circumference of the universe to within the diameter of one hydrogen atom. But pi, something that goes on forever, it’s an infinite decimal. Now we’re going to use pi for that, so we take pi, we multiply it by the diameter and we can get the circumference. We want to know the circumference of that universe. Now, the diameter of the observable universe is about 1 trillion trillion kilometers, so it’s a massive thing. Now, if you wanted to calculate something very large, let’s say we wanted to calculate the circumference of the known universe, which is going to be a huge thing. The formula for the circumference of a circle is pi times the diameter of the circle. JAMES GRIME: So as everyone knows from school, pi is used to calculate the circumference of a circle. Anyway we called up James because we wanted to know, well, how many digits of pi do we actually need and he didn’t disappoint us. So we called up the mathematician, James Grime of the YouTube channel Numberphile, that’s phile spelled with a ph. We celebrate it every year and this year is no exception. IRA FLATOW: Now, you know today is March 11th or 3.11, just three days away from one of our favorite days, 3.14, which you all know as– that’s right, pi day.
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