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The Planck length is a distance constructed from physical constants and is on the order of 10–35 meters. It is the length scale at which quantum gravity becomes relevant. There is a misconception that the universe is composed of Planck–sized pixels, but this is incorrect. It is an important order of magnitude when discussing quantum gravity ...
2. Decoherence times can be estimated and are inverse functions of mass. Since there are no upper bounds on mass, can decoherence time be shorter than Planck time? The answer depends on the meaning of time at time scales comparable to the plank time. ::blinks and shakes head at the repetition there:: Which depends on physics we don't know...
Now, the way that they are "derived" is to take the speed of light c, Planck's constant h and the gravitational constant G. Their units contain mass [kg], distance [m] and time [s]. So say we want to get the Planck distance dPl, then we just make the ansatz. cAhBGC = dPl. where A, B, C are unknown exponents that are determined by equaling the ...
The Planck era is defined as the time when the universe was the size of the Planck length, $10^{-33}$ cms, and less, and the universe's age was $10^{-43}$ sec, the Planck time, and less. It is the earliest epoch we identify after the Big Bang. The Planck temperature at the end of the epoch was about $10^{32}$ degrees Kelvin.
The time it takes for such a black hole to evaporate by the Hawking radiation is also equal to the Planck time i.e. Planck length divided by the speed of light. Smaller (lighter) black holes don't behave as black holes at all; they are elementary particles (and the lifetime shorter than the Planck time is a sign that you can't trust general ...
Some Planck units, like time, length, or temperature, describe a physical maximum or minimum, at least approximately: you can't get hotter than the Planck temperature, measure anything smaller than Planck time or length, etc. Others, like the Planck charge, Planck momentum, or Planck energy, seem to have no associated maxima.
The Planck time is the time it takes for a particle traveling at c to cross the Planck length. Also, dimensional analysis shows that the Planck length is the only length that can be obtained from some mix of the 3 important physical constants G, h, c (up to a scale factor), so this shows that it might (must?) have some physical importance.
The Planck time is the unique combination of the gravitational constant G, the special-relativistic constant c, and the quantum constant ħ, to produce a constant with dimension of time. Because the Planck time comes from dimensional analysis, which ignores constant factors, there is no reason to believe that exactly one unit of Planck time has ...
The debate surrounding Chronon and Planck's time arises from the fact that they both try to explain the nature of time at the quantum level, but in different ways. Some scientists argue that Chronon is a more fundamental unit of time, while others believe that Planck's time is a better representation of the smallest unit of time in the universe.
In the same way, when you say Planck length is the smallest possible distance ever, does that mean every particle ( or it's constituents) jumps from one point to another where distance between the points is Planck's length, kinda like strip lighting, where bulbs lit in a sequence give the illusion that the glowing section is moving along the ...