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- - Pythagoras's theory (http://forums.sv650.org/showthread.php?t=85822)

Pythagoras's theory

Just wondering why this is a theory and not a law, in my eyes implying that it hasn't been proved. I proved it quite a few times at school (well, my maths teacher always gave me ticks for my answers)

Someone got something against him?

There must be a simple explanation.:smt017

Re: Pythagoras's theory

Isn't everything in physics a theory.

The premise being that in all these test cases X is expected to happend and indeed does.

At some future date when X is predicted Y may occur therefore disproving the theory. At which point an amended theory or a completely new one will supersede it.

Re: Pythagoras's theory

Kinvig is essentially correct...

to shamelessly quote from Wikipedia because i'm late for work:

Quote:

In scientific usage, a theory does not mean an unsubstantiated guess or hunch, as it can in everyday speech. A theory is a logically self-consistent model or framework for describing the behavior of a related set of natural or social phenomena. It originates from and/or is supported by experimental evidence (see scientific method). In this sense, a theory is a systematic and formalized expression of all previous observations that is predictive, logical and testable. In principle, scientific theories are always tentative, and subject to corrections or inclusion in a yet wider theory. Commonly, a large number of more specific hypotheses may be logically bound together by just one or two theories. As a general rule for use of the term, theories tend to deal with much broader sets of universals than do hypotheses, which ordinarily deal with much more specific sets of phenomena or specific applications of a theory.

in essence, scientific theory is fact, it's the best model that explains the way a natural phenomenon works, but it might not work in some circumstances (eg: newtonian motion works great until you're moving close to the speed of light, then you need relativity to explain what happens)

Re: Pythagoras's theory

Quote:

I proved it quite a few times at school (well, my maths teacher always gave me ticks for my answers)

my teacher fancied me, she was always putting x's on my homework

Re: Pythagoras's theory

ooo, is that what the means. :love:

Re: Pythagoras's theory

Because it's a theorem , not a theory.

So it is proven.

Re: Pythagoras's theory

you folks have waaaayyyyyy too much time on your hands......... lol.

Re: Pythagoras's theory

Quote:

Originally Posted by Captain Nemo (Post 1141264)

you folks have waaaayyyyyy too much time on your hands......... lol.

sez you, who has already read this far :p

Re: Pythagoras's theory

As Mac99 said, it is a theorem as opposed to a theory. It's a theorem as opposed to a law because, like all things with maths, it looks complex but has no practical purpose (unless you are a maths teacher).

Re: Pythagoras's theory

Quote:

Originally Posted by Moffatt666 (Post 1141418)

Pythagoras and trigonometry are dead useful, not in everyday life but handy if you're building angular shelves, or figuring how long a set of bike dogbones should be, stuff like that.

Re: Pythagoras's theory

I know its not Pythagoras but without the laws of physics, ie centrifugal and centripetal force, gravity etc all worked out by those mathematicians at Suzuki the SV wouldnt be as much fun...

Re: Pythagoras's theory

Quote:

Originally Posted by Born again (Post 1141919)

I know its not Pythagoras but without the laws of physics, ie centrifugal and centripetal force, gravity etc all worked out by those mathematicians at Suzuki the SV wouldnt be as much fun...

well done to suzuki for inventing gravity :p

Re: Pythagoras's theory

We have 'laws', for example the Frank(-)Starling law of the heart.
I'd never thought about it much before, until I read this. See, educative...sort of...:lol:

Re: Pythagoras's theory

Quote:

Originally Posted by weazelz (Post 1141985)

well done to suzuki for inventing gravity :p

LOL that was nearly funny....only nearly.

Re: Pythagoras's theory

Quote:

Originally Posted by northwind (Post 1141594)

Pythagoras and trigonometry are dead useful, not in everyday life but handy if you're building angular shelves, or figuring how long a set of bike dogbones should be, stuff like that.

Actually, I used to work for a company that manufactured Short Wave Antenna systems. One day I was asked by another sales guy (far more experienced than I was) "how much room do you need for one of these ? pointing at a long wire antenna.

Me: Do you know how tall the mast is ?

Him: Yes.

Me: Well then, Pythag will tell you the answer...

Him: What, you're talking b****cks...

So I did the maths in front of him and the Technical Director, he wasn't impressed but the Tech Dir was....

Proof - it can have an "everyday" use :D

.

Re: Pythagoras's theory

I used to sit in maths and think when am i ever gonna need all this..
but yea- you do use it every day.. .. in some form or another..,,,

but- you never look at your watch to just know the time....

you always do a calculation to work out how much time you have left.!!!..

Re: Pythagoras's theory

Quote:

Originally Posted by Jelster (Post 1142399)

Proof - it can have an "everyday" use :D

That is not everyday :)