this post was submitted on 06 Jun 2026
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[–] IAmNorRealTakeYourMeds@lemmy.world 59 points 1 week ago (3 children)

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

but also the hottest possible temperature.

[–] deranger@sh.itjust.works 35 points 1 week ago (2 children)
[–] ItsMyVault101@piefed.social 22 points 1 week ago (2 children)
[–] Hadriscus@jlai.lu 5 points 1 week ago (1 children)
[–] nullspace@lemmy.world 3 points 1 week ago (1 children)

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

[–] JoeBigelow@lemmy.ca 1 points 1 week ago
[–] Hapankaali@lemmy.world 6 points 1 week 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 -3 points 1 week ago (1 children)

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

[–] Hapankaali@lemmy.world 4 points 1 week ago* (last edited 1 week ago)

The Planck constant [Js] was introduced to find a way around the UV catastrophe. The Planck length [m] is defined as \sqrt{\frac{\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 1 week 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.