nikkkom
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oquen said:To clarify:
https://en.wikipedia.org/wiki/Planck_mass
"In physics, the Planck mass, denoted by mP, is the unit of mass in the system of natural units known as Planck units. It is approximately 0.0217651 milligrams—about the mass of a flea egg."
"The Planck mass can be derived approximately by setting it as the mass whose Compton wavelength and Schwarzschild radius are equal.[3] The Compton wavelength is, loosely speaking, the length-scale where quantum effects start to become important for a particle; the heavier the particle, the smaller the Compton wavelength. The Schwarzschild radius is the radius in which a mass, if it were a black hole, would have its event horizon located; the heavier the particle, the larger the Schwarzschild radius. If a particle were massive enough that its Compton wavelength and Schwarzschild radius were approximately equal, its dynamics would be strongly affected by quantum gravity."
It's saying if the Planck length is occupied by energy, it's like the mass of a flea egg.
No. You are reading it wrong.
It's saying that if you take some particle (say, an electron) and accelerate it so much that its wavefunction can be localized to fit entirely in just one Planck length, the necessary energy for such acceleration is equivalent to a mass of a flea egg. Which is an enormous energy for an electron. We are very far from being able to give electrons (or any other particles) that much energy.