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It is true that in between two objects there is infinite space.

With that being said then you can never touch anything being as there will always be an infinite space in between the two objects. then how do we hurt ourselfs with a bullet if the bullet never actually touches us?

All comments welcome.

2007-04-27 06:24:20 · 8 answers · asked by mike 1 in Science & Mathematics Physics

8 answers

I actually don't agree with your initial assumption. You state it as if it is fact, while it is not actually true. I do, however, think I understand, what you are getting at.
Allow me to explain:
1. Why the space is finite
Consider an iron pipe with an inner diameter of 2cm and a length of 2 meters. Then consider two iron cylinders that can just-about slide within the pipe. Give those a length of 50cm each. Slide them into the pipe, aligning edges. The space between the two cylinders has a volume of pi*(0.01m)^2 *1 =0.0001 m^3, which is a finite number. It has a finite size across(2cm), a finite length(1m), etc. Thus, the space is finite.

2. What I think you mean.
I was very happy to discover that there are infinitely many points in between two different set points in space. Moreover, there are equally many between me and my tv in the next room as there are between me and the centre of any given star in the night sky. And the same number as in a whole straight line. Or any line for that matter. So, if a point had finite size, I would be equidistant from my tv and Betelgeuse.
It would also mean that every speed that is non-zero is infinite.
And the truth is that those points have an infinitely small size, zero.
And infinitely many zeroes can amount to anything from zero to infinity.

So, coming to the bullet, it simply comes close enough for its electrons to interact with the atoms of your body. Which can be done at some distance, anyway. Sufficiently small distances in the physical world are largely undefined.
Abou the infinities see the philosophy of Parmenides of Elea and his student, Zeno.

2007-04-27 06:58:55 · answer #1 · answered by misiekram 3 · 0 0

The space between objects is not infinite in length; if it were, we couldn't ever measure it. It is merely infinite in the sense that an infinite number of infinitesimally small lengths, or points, can be said to make up any distance or line, since true mathematical points have zero dimensions and thus no length.

2007-04-27 06:30:17 · answer #2 · answered by ? 5 · 0 0

This is Zenos paradox of Achilles and the Tortoise.
Zeno basically pointed that there is always a halfway mark between were Achilles is and were the tortoise is. Since there is an infinite number of halfway points, you Achilles never reaches the tortoise. That is what you mean by infinite space. This argument was solved by Archimedes mathematically.
Even Aristotle argued that since the half-ways get progressively smaller, the time needed to traverse them also got smaller.

2007-04-27 06:36:48 · answer #3 · answered by MSDC 4 · 0 0

Infinitely divisible space NOT, infinite space. The space between two objects is finite.

2007-04-27 06:32:53 · answer #4 · answered by Anonymous · 0 0

I don't understand your premise. If two objects are a finite distance apart, then there is a finite amount of space between them, not infinite. The distance between the surfaces of two objects can also become zero, at which point they are in contact.

2007-04-27 06:30:11 · answer #5 · answered by DavidK93 7 · 0 0

There is not infinity between objects, there are an infinite number of points - a very different thing.

You have stumbled upon what is called a paradox. Go a search on Zeno's paradox. the Greeks were very keen on them.

2007-04-27 06:31:23 · answer #6 · answered by Anonymous · 0 0

No, it is not true there is infinite space between two objects.

2007-04-27 06:30:08 · answer #7 · answered by campbelp2002 7 · 0 0

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2016-11-28 02:50:27 · answer #8 · answered by fredline 4 · 0 0

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