Timeline for Are these Stephen Hawking's statements legitimate?
Current License: CC BY-SA 4.0
5 events
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| Aug 23, 2019 at 4:01 | comment | added | G. Smith | In General Relativity the ratio of the measured circumference of a physical circle to its measured diameter is not in general exactly $\pi$ because physical space is not Euclidean. But $\pi$ is always 3.14159... . Mathematical constants like $\pi$ are defined by mathematics, and are completely independent of physics. For example, the infinite series $1-1/3+1/5-1/7+...$ sums to $\pi/4$ and this has nothing to do with any law of physics. It is true in every possible universe. | |
| Aug 23, 2019 at 1:59 | comment | added | Juan | I'm just making outrageous examples of things that could happen that could potentially turn the world upside down and make us question physical laws and reality. But sure, I think we can find theories out there where pi=3.14 and the ratio of the circumference and diameter of a circle split, can we? | |
| Aug 23, 2019 at 1:49 | comment | added | G. Smith | Sure, constants like pi can change. How could $\pi$ change? | |
| Aug 23, 2019 at 1:48 | history | edited | Juan | CC BY-SA 4.0 |
deleted 1 character in body
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| Aug 23, 2019 at 1:42 | history | answered | Juan | CC BY-SA 4.0 |