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This might seem a silly question, but here it goes:

Of all possible values for a measure of distance, which is the smallest that makes sense talking about?

I mean, I could talk about $10^{-100000}$ meters but in real life this value is smaller than anything we know (i think), so it wouldn't make any sense talking about this value, now would it? Initially I thought about Planck length, but I'm not sure.

Please not I'm not referring to mathematics, any number can be of use in mathematics. But in real life, small values like $10^{-100000}$ meters don't make sense.

So, what is smallest distance value that makes sense talking about?

Thanks.

Dayman75
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1 Answers1

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According to the generalized uncertainty principle, the Planck length is, in principle, within a factor of order unity, the shortest measurable length – and no improvement in measurement instruments could change that. (Wikipedia)

$$1 \text{ Planck length} = 1.61619926 \times {10}^{-35} m$$

pho
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