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**examples of "infinity" in the physical world**

Can anyone give me examples of "infinity" in the physical world around us? Ie. evidence of its existence as more than merely a mathematical concept.

- Thread starter Adam
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Can anyone give me examples of "infinity" in the physical world around us? Ie. evidence of its existence as more than merely a mathematical concept.

- #2

HallsofIvy

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Why "merely"?

- #3

Unit_Zer0

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Let a2 = a1

Let a3 = a2

Let a4 = a3

...and so on

until

a1000000000000000000000

is reached.

How about this number a1000000000000000000000?

Can anyone give me examples of this scale of number in the physical world around us? Ie. evidence of its existence as more than merely a mathematical concept.

Unlike infinity, this is just a plain ordinary finite number.

- #5

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I find your question interesting.

I too have thought about that and have looked in

many sciences for the answer and other ways.

So far no luck,but I'm still trying.

Anyhow could you give some further idea on your

thinking in this regard?

"If the infinte you want to stride,just walk in the

finite to every side."

Johann Wolfgang Von Goethe

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It's the upper bound on the number where Gauss's prime number approximation Li(n) switches from overestimating the number of primes to underestimating the number of primes.

That's a one followed by 10^10^34 zeros; more zeros than there are atoms in the universe. There's something like 10^80 protons in the universe, and 10^10^50 possible games of chess. If you imagine the universe as a chess board, and switching any two protons constitutes a move, the number of possible games would then be comparable to Skewes number.

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What about infinitely small and infinitely large within which we exist in between!?

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- #10

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No arguments from me on that!

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and also the only thing infinite is the number of universes because the number of possibilities of things is endless and each one makes a new universe and if quantum teleportation were possible now the future and past would exist as one allowing time travel by teleportation to alternate universes where things go a little differently no matter how small the change and if you traveled this way you would never get back to your original universe.

SORRY got caught up in this rant

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"Infinitely small or Infinitely large"

- #13

jcsd

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The only physical quantity that I can think of that may have a value equal to infinity in a physical situation is the thermodynamic temperature in Kelvins.

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If I draw a circle on the ground, is it not considered an infinite path?

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Well, if you take that as an infinite path than anything that starts and ends in the same place would be infinite, this would include say a square, just pointing out the obvious though, so please ignore meOriginally posted by Adam

If I draw a circle on the ground, is it not considered an infinite path?

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Yeah, but with spherical objects, such as a circle youOriginally posted by moooocow

Well, if you take that as an infinite path than anything that starts and ends in the same place would be infinite, this would include say a square, just pointing out the obvious though, so please ignore me

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jcsd

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- #18

HallsofIvy

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A circle, like any curve, no matter how short, contains an infinite number of points, but that is not what we normally mean when we talk about an "infinite path". A circle has a

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That means that it does not have a boundary, which, to me at least, is not equivalent to "infinite."

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