# Instantaneous Age Changes in the Twin "paradox"

Discussion in 'Physics & Math' started by Mike_Fontenot, Sep 2, 2018.

1. ### phytiRegistered Senior Member

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386
Neddy Bate #27;
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What is 'some value'? That's the issue, 'infinity' has no value, it's not a number!
If you expect the canned answer of x/0= infinity, you won't hear it from me.
Infinities belong in cartoon physics.
If two point particles are bonded by an inverse square force, when in contact they would become inseparable. Where would all that binding energy come from?
A particle at the center of the earth is weightless, i.e. no infinite gravitation.
A black hole loses energy via polar jets, ditto, no infinite gravitational collapse.
The problem seems to point to the definition of inverse square rules for forces within a continuum. The continuum conflicts with what the universe shows us, discreteness.

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3. ### phytiRegistered Senior Member

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386
DaveC426913 #36;

I have no problem with limits for finite values, such as v approaching c. If limits were understood correctly, the debate of 1.000... vs .999... would end.
Math is a language and all symbolic expressions can be translated into words. Words are by definition, and subject to ambiguities, multiple interpretations, assumptions, customs, etc. The verification tool of science is measurement, and all things are not measurable.
Measurement is only possible for finite entities, which implies boundaries. If you encounter a stick with one end, (it's length is 'infinite'), how would you measure it?

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5. ### Neddy BateValued Senior Member

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Okay, but zero is a number, unlike infinity, and yet your reaction to the term, "in the limit as the radius approaches zero" was to protest that one cannot divide by zero. Perhaps you just don't like the ideas of limits?

Anyhow, I have no problem with your preferred language, "as the radius approaches zero, the force 'increases without limit’". Glad that is settled. Next.

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7. ### DaveC426913Valued Senior Member

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13,871
Nor from anyone else who can math.
x/0 is undefined.

The division operation is defined as the inverse of multiplication.

There is no number that, when multipled by zero, gives anything other than zero.

Therefore, x/0 has no value.

8. ### TheFroggerValued Senior Member

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• Please do not post useless pseudo-mathematics.
1÷0

The first calculation produces a remainder of minus one. The next calculation is one.

Ones into zero, zero, remainder minus one.

Ones into minus ten, minus ten.

1÷0=-0.10

Zero being a tenth of one.

Last edited by a moderator: Oct 12, 2018
9. ### originIn a democracy you deserve the leaders you elect.Valued Senior Member

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And the Counter/Throbber math absurdities starts up again.

Please Register or Log in to view the hidden image!

I think you have been banned, what, about 5 times for posting this crap in the science section?

Let's report it and see if you get another ban......

10. ### TheFroggerValued Senior Member

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2,120
Apologies. Zero being a tenth of nine, zero to nine being the ten symbols used in mathematics.

11. ### originIn a democracy you deserve the leaders you elect.Valued Senior Member

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You're a lost ball in high weeds....

12. ### TheFroggerValued Senior Member

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How so? Zero to nine are the ten symbols used in mathematics. Ten is a column added leftwards and one and zero are reused. ☺

13. ### TheFroggerValued Senior Member

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2,120
Duplicate post.

14. ### DaveC426913Valued Senior Member

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Both those statements are dead wrong. This is grade school math.

Either you are trolling, or you do not know how to math. Or both.

15. ### TheFroggerValued Senior Member

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2,120
Have you an argument?

16. ### DaveC426913Valued Senior Member

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I made it. Your statements are false.

So I'm asking why you made them. Either you don't math, or you are deliberately being vexatious.

17. ### James RJust this guy, you know?Staff Member

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Moderator note: TheFrogger (aka Counter, Throbber) has been warned for posting nonsense pseudo-mathematics to our Science subforums. Further posting of this kind may lead to exclusion from posting in those subforums.

Moreover, it has come to my attention that the user Throbber was a sock puppet. This time (only), Throbber's posts have been merged into TheFrogger's posts, on the assumption that perhaps TheFrogger was not aware of our policy.

Members are asked to use the report function if any further sock puppets of this user are suspected, and to report any further instances of posting nonsense in our Science subforums.