2 ms·

Isn't a Planck length just the minimum for measurability?

• triclops200 1y ago
  Measurability is essentially a synonym for meaningful interaction at some measurement scale. When describing fundamental measurability limits, you're essentially describing what current physical models consider to be the fundamental interaction scale.
• layer8 1y ago
  Not quite. Smaller wavelengths mean higher energy, and a photon with Planck wavelength would be energetic enough to form a black hole. So you can’t meaningfully interact electromagnetically with something smaller than the Planck length. Nor can that something have electromagnetic properties. But since we don’t have a working theory of quantum gravity at such energies, the final verdict remains open.