jeffrey
2005-08-13 03:45:41 |
pie=3.0?
i was told there was a theory that pie is exactly equal to 3 and that 5 was equal to 1 the only other thing i remember was sumthing aout sign wave im only ninth grade but curious could you explain this to me as best you can? |
Sam
2005-08-13 11:49:21 |
Re: pie=3.0?
It's not possible that you are thinking of the hoax that the state of Alabama passed a law redefining pi to be exactly 3, are you? For reference, see http://www.snopes.com/religion/pi.htm. The hoax was a satire on places that try to use the bible to define scientific laws.
As for 5=1, there are a great number of fake mathematical equations, which can be used to prove anything you want. For instance:
a-b = c
square both sides:
a2 − 2ab + b2 = c2
since a − b = c, substitute:
a2 − 2ab + b2 = (a − b)c
write out the multiplication:
a2 − 2ab + b2 = ac − bc
rearranging all, we get:
a2 − ab − ac = ab − b2 − bc
factorize both members:
a(a − b − c) = b(a − b − c)
cancel the common factor:
a = b
so if we used a=5 and b=1, we've just proved that 5=1. there are many such proofs, and most of them rely on people missing some mistake, like dividing by zero. In the above example, the last step requires dividing by (a-b-c) which, however, is equal to zero, and so illegal.
So yes, you can find some ways to make 5=1, but since 5 doesn't actually equal 1, these proofs are bogus.
I'm not sure what it is you're asking about the sine wave. My guess would be to wait until you've taken trigonometry for that...
|
jeffrey
2005-08-13 14:49:36 |
Re: pie=3.0?
lol ok thanks |
Old Original Oskar!
2005-08-16 03:00:01 |
Re: pie=3.0?
Pi=3 if and only if wheels are hexagons...
Or, as someone said, "Pi=3 for sufficiently small values of Pi, and sufficiently large values of 3." |
Hugo
2005-08-16 06:38:32 |
pie was indeed 3.0!
Pie was exactly three abouth 17000 years ago, it will be 4.00 in the year 9772, precise calculations show march 14 th.
As is generally known, Pi changes through history:
- Egyptians used 4 * (8/9)^2
- Babylonians used 3 1/8
- Archimedes used 3 1/7
Some people claim that this is because those guys couldn't do the right calculations. That is rubbish, all you need to do is measure a circle, you just need a rope.
So in reality: Pie is constantly changing.
And because of the time difference between Europe and the US, Pie is even slightly larger in Europe. |
Erik O.
2005-08-16 13:54:52 |
Re: pie=3.0?
I read somewhere that the largest 'miscalculation' for pi was when some legislating body defined pi=4. I thought I read it in the Guinness book of records as the largest miscalculation of pi, but I can't find any reference to it on google now. |
jeffrey
2005-08-16 15:43:28 |
Re: pie=3.0?
lol well if you use a rope theres a margin or error for the thickness of the rope and how would the time difference change the amount of pi? |
Hugo
2005-08-16 21:06:40 |
pie=3.0!
how would the time difference change the amount of pi?
was writen by Jeffrey
OK Jeffrey, from -17000 to +9772, Pie changed from 3.00 till 4.00, so its clea |
Hugo
2005-08-16 21:32:21 |
Re: pie=3.0?
OK Jeffrey, from -17000 to +9772, Pi changed from 3.00 till 4.00, so its clear that Pi changes continuously. This means every day, every hour, every minute. Pi changes.
And because of the time difference between Europe and the US, Pi is just a very little bit larger in Europe then in the US. That, by the way is the reason that Christmas tree balls are generally produced in Europe, or even in China, which is an extra 8 more hours before (or in Pi values: 0,000.000.000.00174 larger).
Also Chinese pool and billiard balls seem to be better. New Zealand has recently realised this and, as it is the closest to the date line change, it now heavily funded the billiard/pool ball industry. |
brianjn
2005-08-17 04:03:56 |
Re: pie=3.0?
Jeffrey, take a look at these two sites:
http://www.symynet.com/fb/pi_hoax.htm
http://www.joyofpi.com/
The latter is about a book, but digits, links and facts might be a help to you.
Unfortunately I don't think that there is a treatise there which will fully explain Hugo's time differentials. :-{ |
brianjn
2005-08-17 04:18:50 |
Re: pie=3.0?
From http://en.wikipedia.org/wiki/Pi
Least accurate approximations
In 1897, a physician and amateur mathematician from Indiana named Edward J. Goodwin believed that the transcendental value of π was wrong. He proposed a bill to Indiana Representative T. I. Record which expressed the "new mathematical truth" in several ways:
The ratio of the diameter of a circle to its circumference is 5/4 to 4. (π= 3.2)
The ratio of the length of a 90 degree arc to the length of a segment connecting the arc's two endpoints is 8 to 7. (π ~ 3.23...)
The area of a circle equals the area of a square whose side is 1/4 the circumference of the circle. (π= 4)
It has been found that a circular area is to the square on a line equal to the quadrant of the circumference, as the area of an equilateral rectangle is to the square on one side. (π ~ 9.24 if rectangle is emended to triangle; if not, as above.)
[Note that the second last paragraph does support Hugo's claim to Pi having a value of 4]. |
owl
2005-08-17 14:47:11 |
Re: pie=3.0?
ROFL
Hugo,you wiped away the veil of confusion from my eyes. The christmas ornament issue has tormented me for years. I can only say, thank you. |
