4 ms·
> For example, a really small object can have a length smaller than the Planck length, but we wouldn't truly know how long it was because the Planck length acts
by richrichardsson 9y ago
> For example, a really small object can have a length smaller than the Planck length, but we wouldn't truly know how long it was because the Planck length acts as a fundamental limit on the precision/granularity of our measuring instruments.
Would that be, to all intents and purposes, undetectable by us then? If so then that might be a possible explanation of "dark matter", assuming all these things were individually smaller than the Planck length.
- spynxic 9y ago> Would that be, to all intents and purposes, undetectable by us then? In so far as our means for measuring particles doesn't change; namely, smashing things together at extremely high energies. If you suppose that there are methods for measuring sub-Planck length areas then one must assume that they involve either: energies lower than those believed to be needed (which doesn't necessarily come to a solution, but pushes the problem to even higher energies and shorter lengths) OR that there is a default force that keeps space-time stable unless high energies are approached. Note that both notions are mere speculation, the first on logic and the second on intuition about phase changes in states of matter.