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by jerf
2502 days ago
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That is a number with significant digits. 0.00000... emphasizes the fact that it's not just close to zero, but exactly zero. 0 in a physics context can be read as "0 to one significant digit", which can be non-zero. For a real example, see discussions about the total cosmic curvature, which is 0 to some finite number of significant digits, but that doesn't let us quite be sure it's totally zero. |
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