What kind of pie will you be eating today ?

Pi day is just a scam by math companies to sell more math. Or maths, in the UK. Ask macaRomney. He’s got their, um, number. :)

You're right, of course, BoJ. In France, it's maths, too - because they only sell it in multiples. I should know. My elder daughter sells it (them;-) in a high school in Aubervilliers (like drugs) and my wife sells several sorts, including geometry, at a university.

I told them it sounded to me like a pyramid scheme ;-)

Let me guess: the Aubervilliers High School mascot is a dark purple.

Sorry to disappoint you, LW, but high schools in France don't even have mascots - probably because we do not have inter-high-school sports, which are handled by outside clubs.

'Twas an (apparently unsuccessful) joke. I was suggesting that the mascot for Aubervilliers should be a big juicy aubergine.



Edited 1 time(s). Last edit at 03/15/2021 10:58PM by Lot's Wife.

Brother Of Jerry Wrote:
-------------------------------------------------------
> Pi day is just a scam by math companies to sell
> more math.

I don't care about that as long as I still get the 0.14159 bonus slice when I order three.

Strawberry - Rhubarb!!

√-1 2³ ∑ ∏

And it was good!

Triple berry by the way.

OH COME ONE!!! No-one got this?!?!?!?

Where's my math geeks! Step forward!!!

I ate some pie.

Thank you!

(I thought it was clever, but then... )

It was a good one. I kept getting caught up in the "√-1," thinking perhaps you meant "imagine ate some pie." But italics work well, particularly in comparison:

"What did you eat for dinner?"

"We had sashimi tacos."

"Well *I* ate some pie!"

Well, I pledged ∑∏ at U. of Utah in 1962...

I want to believe that this is part of the reason that the lot where the old ∑∏ House sat is now an empty but well tended lot.

I just checked it on Google Maps, 39 S. Wolcott... Wow, coming up on 70 years!

*Zap*



Edited 1 time(s). Last edit at 03/15/2021 04:43PM by Lot's Wife.

Thank you for sparing my tender feelings. I'm sure you wrote something just perfectly horrid!

You bad, bad lady!

Actually, I was just seeing if I could hit you with a bolt of lightning.

Apparently I failed.

I'm happily well-grounded !!

*Zap the sap!*

You're 90-ish, EOD?! I may have to resort to more respect. Seriously!

Born in 1945, turned 17 just a few months before HS graduation in 1962 and went of to the U of U a mere child.


Nothing has changed.

Ah, so safely in your 70s. Very good. LW may have her way with you, then.

Not I, Void. That's Saucie's role.

I'm safely situated thousands of miles away in the Witless Protection Program.

elderolddog Wrote:
-------------------------------------------------------
> Born in 1945, turned 17 just a few months before
> HS graduation in 1962 and went of to the U of U a
> mere child.
>
>
> Nothing has changed.


Hmmm,,,,,

I was born in 1946, turned 17 in April and graduated from HS in May 1963. Went to Jr College for 2 year and then NMSU for my degree.

EOD is 90 if he is a day.

Some say he's well over 100, but that's just if you consider his mental acuity.

I think June 28 is at least as worthy of recognition. Whose bright idea was it to set pi to **half** the perimeter of a circle?

BTW, pi is the first letter in the Greek word for perimeter, which is how it got the job.

Where did that come from? I've never heard that pi is half the perimeter.

It's not.

The circumference of a circle is C=πd

So π=C/d not C/2.

I think what BoJ meant to say was "half the diameter."

As [|] notes, C=πd is easier to manage both mathematically and conceptually than C=2πr.

Then why is the area πr^2? The circumference of a circle is usually defined in terms of the radius, though it can obviously be defined in terms of the diameter. Essentially all other relationships regarding circles and spheres are defined in terms of the radius. Area = πr^2, area of sphere = 4πr^2, volume of sphere = 4/3 πr^3.

Also, a hexagon is exactly 6 copies of a radius as internal chords in a circle.

Feeling the definition or π is inappropriate is not new with me. Here's an article on the subject from Sci Am.

https://www.scientificamerican.com/article/let-s-use-tau-it-s-easier-than-pi/

https://tauday.com

ETA: when you get into calculus, all manner of quantities are expressed in terms of radians. One radian is the length of one radius rolled along the perimeter of a circle. Mathematics doesn't even have a word for rolling a diameter along the perimeter of a circle. (Diamian?). It's all radians, all the time.



Edited 2 time(s). Last edit at 03/16/2021 03:21PM by Brother Of Jerry.

Yes, the need for a common usage for all relevant equations is an important consideration. But I recall as a kid realizing that I could think of circumference as πd, a formulation that made intuitive sense.

Perhaps the concept could be introduced as C=πd, and when students get comfortable with that, change to C=2πr to lay the foundation for other equations. Somewhere some erudite mathematics professor should have insisted on that.

Oh well. . .

On a different point, the measurement of the font in 1 Kings 7:23 is enlightening. Imagine how screwed up the Creation would inevitably be if you begin with the mistaken notion that π=3!

http://expositions.bnf.fr/ciel/grand/3-074.htm

Douglas Hofstadter addressed the question of π = 3 in the Old Testament. His reply: If π were 3, the world would look like this.

(the word "look" was printed as a visual pun, with the letters "OO" replaced with two hexagons. It was funny in the original, trust me. :)



Edited 1 time(s). Last edit at 03/16/2021 03:26PM by Brother Of Jerry.

That comes very close to saying God is a misshapen boob. Who would have thought?



Edited 1 time(s). Last edit at 03/16/2021 03:28PM by Lot's Wife.

If you are a christian then pi = 3

pi = 3 works fine if you are willing to make all your circles hexagons. Works for chicken wire fencing.

Edited 1 time(s). Last edit at 03/16/2021 02:58PM by Soft Machine.

Cornbread are squared. Pi are round.

Yet another off the wall example of how the radius is more important in working with π than is the diameter. Gracias (or muito obrigado, mike).

The fact that mathematicians and engineers deal with circles (and lots of other things, it turns out) in radians, and π is the number of radians in half a circle, leaves us with confusing relationships like:
a third of the way around a circle is 2/3π radians.
three quarters of the way around a circle is 1.5π radians.
all the way around a circle is 2π radians.

This is not good work.

ETA: tau has been proposed as a replacement. We are stuck with the current definition of π. That can't be changed.

If tau is 2π, then a third of the way around a circle would be ⅓ tau. three quarters of the way around would be ¾ tau radians, and all the way around would be tau radians. Simple.



Edited 1 time(s). Last edit at 03/16/2021 03:51PM by Brother Of Jerry.

Took me a while to figure this out until I remembered Americans do the date backwards. I was wondering what 14/3 had to do with anything never mind Pi. : )

Hahaha!

Well when the monarchy collapses, you will have to give up your dates and your ounces and inches and stones and act like the rest of us morons!

They'll want to get rid of decimal money next and go back to pounds, shillings, and pence...

So true!

Was it 240 pounds in a shilling? Or 14 stones in a pound? 53 minutes in an hour? Pi=3?

To think you lot once ruled the world!

I have heard good things about a fresh strawberry pie from a local bakeshop. I think this needs to be investigated. :)

They'll want to get rid of decimal money next and go back to pounds, shillings, and pence...


Errr, I live in Australia where we have dollars and cents. Ditto kilometres, kilos, centigrade, litres.

I did grow up with pounds shillings and pence tho'.