What's the difference between:

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You are currently reading a thread in /sci/ - Science & Math

You are currently reading a thread in /sci/ - Science & Math

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What's the difference between:

1) A sphere.

2) A circle rotating along a diameter in a three dimensional space at an infinite speed.

???

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>>7810080

rotational momentum

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>>7810080

>infinite speed

No such thing and not in terms of "that can't be" (we're talking about a 2d shape taking up 3d volume by rotation, being impossible in a real world sense isn't a factor) but because it doesn't make sense. Infinite isn't a quantity.

At an arbitrarily large speed?

One is a solid body and the other is a rotating 2D shape.

As for what differences this makes, think in terms of stuff like density and mass.

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>>7810080

The difference is that one would be perfectly safe to touch, while the other would make your finger permanently invisible.

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>>7810080

Do you really want to know?

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>>7810100

I'll take that as a sign that I've been understood for awhile.

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>>7810080

what's the difference between a solid 3d cube and a single point flying around at infinite^infinite speed taking up every single coordinate of where the solid 3d cube would be?

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>>7810080

+1 for Hunter S. Thompson and Oscar Acosta

Thompson is the Feynman of Journalism.

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>>7810160

One's faster.

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If a sphere was made of solid material, but not atoms just a perfect sphere of material, and it rotated, would it have rotated?

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>>7810175

Depends. Did Dyson make it?

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>>7810080

Rigorously define infinity and I'll take a set-theoretic look at your bullshit bait :^)

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>>7810080

one of them is a sphere

the other is a circle rotating along a diameter in a three dimensional space at an infinite speed (whatever that means)

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what the fuck is infinite speed

why are bait threads so easily eaten

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In classical mechanics a rigid body's geometry does not change with it's speed.

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OP here

>>7810087

momentum implies mass right? this is more of the idea of both shapes.

>>7810093

>no such thing as infinite speed

why?

>arbitrary large speed

different than what i mean.

>one is a solid body and the other is a 2d shape

outside of a temporal dimension, yes.

>think in terms of density and mass

I'm thinking of massless concepts in a non-physical abyss. *tips fedora*. not sure what the term is for what i'm talking about lol.

>>7810100

checked.

>safe to touch

no such thing as touching or fingers in this situation.

>>7810103

not sure.

>>7810160

idk.. the rotating circle seems more tangible and easily applied to a mathematical format.

>>7810175

again, kind of my question.

>>7810191

Well... Here goes nothing..

n+1.

a sub-question would be "how fast would the circle have to be rotating for it to be mathematically indistinguishable from a sphere?"

>>7810211

This one I thought about pretty hard tbqh. But given the "infinite speed", you couldn't really slow it down. Right? Idk.

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>>7810093

>>7810623

I think I didn't do what you're saying justice

>infinite isn't a quantity

you're right, but why doesn't it make sense? if i said that "as the rotating circle's speed approaches infinity, it becomes indistinguishable from a sphere" that would imply some kind of acceleration. These two things have existed forever, and the rotating circle has been going the same speed forever. how would one differentiate the two?

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Mathematically theyre the same, you dont need the infinite speed bullshit if youre not thinking pseudo physics. Circle is the boundary of a flat ball(disk), rotation of the circle just adds one dimension to the ball. A sphere can be defined by a rotating circle as this boundary of the ball.

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I like how nobody can distinguish a disc from a circle

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>>7812025

Physically the difference would be in what happens if you bring two such objects together. An atom is a good example, by itself you could confuse it for a very small solid but by its interactions it clearly not.

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>>7810637

That's why I said an arbitrarily large speed (which should actually be angular velocity, but w/e).

It doesn't make sense to use infinity as a quantity because it isn't one. It's like if someone asks how many cookies you want and you answer "enlightenment". This is especially true in situations like this where you're talking about concepts that are impossible in the first place. But notice that I didn't just pedantically say it doesn't make sense because I knew what you were talking about, corrected that terminology bit, then went ahead to answer.

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Centrifugal force would have an effect on the internal structure. Also what if everything we've been led to bekieve is a lie, Scully?

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>>7810191

Bigger than 5

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