Pi now exactly 3 instead of 3.1415

[GBM]

Better study up on this... as all our circle calculations will be affected...

http://www.huffingtonpost.com/ian-squires/republicans-introduce-leg_b_837828.html

[Fat Bastard]

More moronic thinking. Changing Pi to change the test scores. How stupid.

Addressing perception and not reality.

[Fegenbush]

I feel the need to mention that, at the top of the page, it says Huffington Post COMEDY. While I do believe people are this stupid, I do not think this article is the real deal, yet.

[Oldiron2]

I feel the need to mention that, at the top of the page, it says Huffington Post COMEDY. While I do believe people are this stupid, I do not think this article is the real deal, yet.

Isn't all the Huffin-n-puffington Post a comedy? This piece is just more 'lies' to try to paint the other side as fools for what only the Dems would ever even think of, or worse yet, try to do.

[GBM]

http://www.snopes.com/religion/pi.asp

[Fat Bastard]

Wow they got me too, anything the left can do to ridicule the correct side of thinking.

[GBM]

Almost got to me.. it may have been in the comedy section of Huffpost..but this other site does not do comedy..

http://www.dailykos.com/story/2011/03/22/957873/-Conservative-Pie;-Republicans-Introduce-Legislation-Redefining-%CF%80-as-Exactly-3

[Oldiron2]

Almost got to me.. it may have been in the comedy section of Huffpost..but this other site does not do comedy..

http://www.dailykos.com/story/2011/03/22/957873/-Conservative-Pie;-Republicans-Introduce-Legislation-Redefining-%CF%80-as-Exactly-3

I don't read most of that 'crap' but seem to recall that site is no better. anyway, if you're interested in checking out what the Real HR 205 (for 2011-2012) is about, take a look at this:

http://thomas.loc.gov/cgi-bin/query/z?c112:H.R.205:

[Knotbored]

You folks all do realize April 1 is just around the corner and all of these are meant as amunition for uninformed jokesters.

[Donald Branscom]

You folks all do realize April 1 is just around the corner and all of these are meant as amunition for uninformed jokesters.

Yes ...That would be the only logical reason.:laugh:

[joefitz]

Pi will always be Circumference of a circle divided by its diameter. Anyone who mutters off digits in a decimal is just pretending to know their math.

[Sandy]

Pi R round, Cake R square. :)

[Cat220]

22 divided by 7 is close enough for pi

[mccutter]

pi more correctly rounds to 3.1416, BTW. ;) Come on, people--like someone would actually try to change an age-old mathematical constant? :rolleyes: If anyone were to try to change it, it would be the "party of change", :alien: not the Republicans...

[TrueBlue]

In school I remember and always used PI as 3.1416, but when taking the accuplacer for considering going back to school I think it used 3.14 if I remember correctly (I just took the test this past Dec. and forgot what hey used already, lol).

[slow6i]

Pi will always be Circumference of a circle divided by its diameter. Anyone who mutters off digits in a decimal is just pretending to know their math.

Pi defined as the ratio of the circumfrence of a circle to its diameter? Or square of its radius...

It is a constant 3.1415(...) in every case... so yes, you are correct, but anyone that says pi and 3.1415(...) in the same sentence and knows what it actually means is not pretending to know their math... :)
... unless they start trying to find an unknown angle of a right triangle with it... then you can call their bull&h!t.

just sayin.

[brucer]

i've always used 3.14159, what i was taught in machine shop class in high school.

and converting metric i use 25.4 not the .039372 alot of people use.

[Brad Blazer]

I use the TT button on my calculator or pi() in excel. There are exactly 25.4mm/inch by definition. The reciprocal is not so neat and the "2" at the end of yours doesn't belong there.

I just noticed that the calculator in Windows 7 includes unit conversions. :)

[tanglediver]

What if the plane upon which the geometry is based becomes curved? :rolleyes:

[tj2]

Isn't all the Huffin-n-puffington Post a comedy? This piece is just more 'lies' to try to paint the other side as fools for what only the Dems would ever even think of, or worse yet, try to do.

To be fair, the "other side" is usually the one showing little/no respect for science.

[Groo]

Both side are full of idiots who think legislation can trump facts.

[PapaLion]

I'm with Archimedes on this one... my GED students are doing this right now as they discover geometry .... I haven't told them there is a pi or that we are calculating pi. rather, I just do circle problems and we get to C/d and I ask them to figure that out for that circle and write the answer down on a page in their notebook. Next, class we do another problem of some kind re circles, then I ask "by the way do C/d and write it on that page ... some night there will be an AhHaaa and some student will say
" Man this is weird, all of those circles get this same number when you take C/d... ? Whatzat?
It's a kick when it happens.

Equilateral triangles are fun too.

[wintermute]

All of the back and forth on whether Pi is 3.14, 3.1416, 3.14159, etc... has left out the key point which is that the length of Pi that you utilize is dependant upon the level of accuracy you require which is dependant upon the tolerance your require and can change wildly with the size of the object (either real or not) that you are dealing with. I've seen Pi used at 200 digits to perform calculations for large high precision parts... It's important to apply the level of accuracy required for your problem, sometimes that 3.14, sometimes it's 3.1415926535897932384626...just depends on what you require in your accurancy at the end.

btw, I think the only way either party would ever try to change the value of Pi is if it could be used to justify more spending...

--Wintermute

[Brett]

". I've seen Pi used at 200 digits to perform calculations for large high precision parts"


?? 200? Where?, When ?

Still never let the truth get in the way of a good story .....

You want to simplify Pi? Express it in Base Pi... 1

[wintermute]

Where: at the goldstone microwave dish array in CA run by JPL :)
When: around 1999
What for: a 200' diameter ring gear used to rotate the dish...don't know how far out they were targetting with it, but it was outside our solar system...so probably very little room for error. I also know they had a huge number of systems for checking and making adjustments based on the temperature of the ring gear and the dish as even a few degree temp change caused changes in the alignment of the dish...and the desert there goes through quite a bit more than a few degrees...like -20 at night and up to 120 during the day.

--Wintermute

[Brett]

So your saying they were working on specifications that were going to 200 decimal places?

:)

You do realize that 0.000000000016 ym (1.6×10−35 m) is Plank length lengths smaller than this do not make any physical sense.
The diameter of an electron is 2 × 10−23 metres.
There is a physical limit to accuracy , if your base unit is metres there is no physical measurement with an accuracy of 37 decimal places.

[wintermute]

Just saying what they did...not why. The engineers designing the gear did it at those numbers and handed them off to the machine shop doing the work. I just got to see the specs at the time and some of the machining done :)

ohh, and just to be clear, the calculations were done at that level. The diagrams and tolerances given to the machine shop weren't. The tolerances given to the machine shop were to 1/100,000ths.

--Wintermute

[Brett]

Ok, you saw some specs at 1/100,000ths How do you know that the Engineers worked at 200 decimal places? Which BTW is BS.

I mentioned your comment to a friend of mine at dinner, Max works as a Engineer at the CSIRO .
He just smiled and said welcome to the internet.

[Oldiron2]

So your saying they were working on specifications that were going to 200 decimal places?

:)

You do realize that 0.000000000016 ym (1.6×10−35 m) is Plank length lengths smaller than this do not make any physical sense.
The diameter of an electron is 2 × 10−23 metre
There is a physical limit to accuracy , if your base unit is metres there is no physical meas.surement with an accuracy of 37 decimal places.

Really?

I have Go -- No Go gauges for all my electrons, and the ones which are close-to-size but out-of-round I send to a brother in law, who sells them in Australia when he's there on a diving vacation! :D

[Sandy]

Really?

I have Go -- No Go gauges for all my electrons, and the ones which are close-to-size but out-of-round I send to a brother in law, who sells them in Australia when he's there on a diving vacation! :D

Nothing worse than egg shaped electrons. They won't roll straight and they'll clog up a precision electron tube. ;)

[Brett]

"I send to a brother in law, who sells them in Australia when he's there on a diving vacation! "


You send electrons over here?
Are you positive?

[Oldiron2]

"I send to a brother in law, who sells them in Australia when he's there on a diving vacation! "


You send electrons over here?
Are you positive?


I'm Neutral; my Brother in law is Positive, and he's in New Zealand , FWIW.

[fortyonethirty]

"I send to a brother in law, who sells them in Australia when he's there on a diving vacation! "


You send electrons over here?
Are you positive?

He must be now! Since he's already sent them away!

[wintermute]

Ok, you saw some specs at 1/100,000ths How do you know that the Engineers worked at 200 decimal places? Which BTW is BS.

I mentioned your comment to a friend of mine at dinner, Max works as a Engineer at the CSIRO .
He just smiled and said welcome to the internet.

Look Brett, you want to be insulting then take your time to type somewhere else. I'm letting you know what I saw and heard while I was there. Maybe the engineer wanted to test out the math co-processing capabilities of their new system, maybe there was some idiotic gov't requirement in place, maybe he wanted to see if he could do it or maybe he was just a bit off from spending the last 20 years working out in the middle of the desert. I'm not sure why...but that's what was done. Now (politely) take it or leave it.

--Wintermute

[Brett]

Look Brett, you want to be insulting then take your time to type somewhere else........... Now (politely) take it or leave it.

--Wintermute


Dont get your knickers in a knot wintermute.
I simply asked how you know they used 200.
Did you see a print out of the working?
If so it seems odd they would write a figure not a symbol.
Did you see the parameter settings of their software?
Or did someone just say it?

[wintermute]

I talked with the engineer while he was running the calculations. Later I went with my grandfather out to deliver the plans the the machine shop. That's how I saw both sides of it.

--Wintermute

[Brett]

I see, someone just said it.

[Oldiron2]

I see, someone just said it.

That is not an accurate description of what wintermute just posted; ironic that you were the one questioning what he'd earlier posted and now leave out half the facts. :cry: