Shorter than short?

[Neonatal RRT]

I would not be so sure of that comes out of some pretty rigorous calculations, much like the speed of light. Biggest issue what would you use as a ruler, kernel of Heisenberg uncertainty principle.

The point being that there are many different systems of mathematics and measurement. In this case, we happen to use the speed of light.

 

[UFO]

Considering that when we go enough small scale, borderline between matter and energy diminishes. You can get exactly same results modeling physics both with giving to a particle a mass and other physical qualities, or a wavelength and other energetic properties. This is considered an equilibrium state between matter and energy at lower end of scale, and you can't go below Planck's unit, as the defined theory ends here, and because you would have to start working with some weird (mathematical) results. A little bit like you can't go above the theoretical speed of light because theory of relativity ends there and you would have to start working with imaginary numbers.

I now read about them. Still superficially and still not understanding much. But I found out that the energy-matter duality is not the point, and that I "kind of" figured out the idea of Planck's units representing edges of physical theories.

Planck's units are like SI units: Calibrated to represent some uniform relation between all units. SI units have simple relations like one Joule is one kilogram multiplied by one meter squared divided by one second squared (compare that to calculating with pounds, yards and seconds). Planck units are calibrated to produce one at edge cases: One Planck length unit divided by one Planck time unit is one speed of light. One Planck mass unit divided by one Planck length unit is the point where a black hole is created if such mass is concentrated to a ball of such diameter (length is two times Schwarzschild's radius). I didn't find out if this constant has same kind of neat name like the speed of light. In both results value above one enters to a very interesting theoretical territory (speeds above light are currently considered impossible, but Schwarzschild's radius can have more mass inside it, which doesn't matter as time-space still starts to behave in a weird way).

So, back to the original question, in more serious manner this time:

We all know that the shortest calculated unit of time and measurement is the Planck, but is it possible for there to be a smaller unit than that? I want to hear your thoughts on this question.

I need more information and thinking to produce an opinion of my own, but intuitively I would say that Planck's length, time etc. are not restrictive themselves and, for example, there could be lengths shorter than Planck's length. Apparently measuring objects that small would require again a black hole creating amounts of energy which would hide the results from us, or something like that - meaning that we need new theoretical basis (quantum gravity?) to even calculate what such observations would tell us. But so far, I think, length restricts only the size of the observable (time-)space with current theories.

Having units different than Planck's probably wouldn't be useful, as current values already produce nice scale of values between zero and one for results that fit into the domain of easily understandable theories.

"We all know"... I just learned it today in hastily manner

Btw this made me chuckle in the best way out of your shear honesty.

Thank you.

 

[Jonn]

Btw. Neither AI nor Wiki wasn't involved, I was talking directly out from my bottom here, I don't know beans about quantum theory . Was I even close?

Sometimes it is just fun playing around with ideas.
I used to do a hell of a lot of that not that long ago.