this post was submitted on 06 Jun 2026
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[–] IAmNorRealTakeYourMeds@lemmy.world 45 points 3 weeks ago (3 children)

it's also the measurement for the shortest possible time span

but also the hottest possible temperature.

[–] deranger@sh.itjust.works 27 points 3 weeks ago (2 children)
[–] ItsMyVault101@piefed.social 13 points 2 weeks ago (2 children)
[–] Hadriscus@jlai.lu 4 points 2 weeks ago (1 children)
[–] nullspace@lemmy.world 1 points 2 weeks ago (1 children)

What do you get when you put a plankmaxxer on a plank?

[–] anomnom@sh.itjust.works 3 points 2 weeks ago (1 children)
[–] ItsMyVault101@piefed.social 1 points 2 weeks ago

you nailed that one

[–] JoeBigelow@lemmy.ca 1 points 2 weeks ago
[–] Hapankaali@lemmy.world 5 points 3 weeks ago (1 children)

The Planck units are a choice of natural units relevant to cosmology. They aren't the smallest or largest of anything. The Planck mass is roughly the same as that of a fruit fly.

In our current established theoretical framework, there is no reason to presume that either time or space are discrete, nor is there experimental evidence for it.

[–] IAmNorRealTakeYourMeds@lemmy.world -2 points 3 weeks ago (1 children)

Planck distance is a fundamental unit, otherwise we get the ultraviolet catastrophe

[–] Hapankaali@lemmy.world 4 points 2 weeks ago

The Planck constant [Js] was introduced to find a way around the UV catastrophe. The Planck length [m] is defined as \sqrt{\hbar G}{c^3}, where G is the gravitational constant and c the speed of light in vacuum.

[–] gandalf_der_12te@feddit.org 1 points 2 weeks ago (1 children)

is there any proof for this? that there's nothing outside it

planck time is just the time it takes for light to travel a Planck distance, and Planck temperature is just a planck distance wavelength.

not really proof, and more like derivate units.