Time For a Slice of Pi??

[Frank in Fairfield]

3.14

[buellm2]

First celebrated in 1592.   I can't believe it's celebrated with pizza these days.

[Nvreloader]

The long version is 3.14159...

[OldCrow]

The long version is 3.14159...

"Hah! That's not a long version!"  3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679, "Now that right there, THAT's the LONG version.", he said in his best Aussie accent.

[Hoosier Daddy]

Company supplied Pie in the break room today, I had strawberry rhubarb. 

[airgunaut]

Speaking of pizza pi, I knew a guy who, when several coworkers decided to buy pizzas, calculated whether buying several small ones yielded more pizza than buying one huge one. He didn't just calculate the areas of them; he subtracted the areas of the edge crusts (where there was no cheese). Fairly simple, except it ignored the subjective values that individuals might place on crust vs interior cheesed area. His notion of value addressed materials alone, not enjoyment thereof.

[Frank in Fairfield]

The administrators on AGN had no clue what 3.14 meant so they discarded my post.🤔

[Hoosier Daddy]

The administrators on AGN had no clue what 3.14 meant so they discarded my post.🤔

That only shows more "intelligent" people are on GTA!

[Berserkeley Mike]

So, since this is the nerd thread, consider this video on some bouncing blocks that calculate pi, or something like that:

I'm still wrapping my mind around it, which may take some time...
But it reminded me of a springer, with the piston and pellet kinda bouncing off each other through an air cusion.

At any rate for the airgun related pi question, if the friction of a pellet down the bore is roughly proportional to the radius (circumference = pi * 2r), yet the push from the air charge proportional to the _square_ of the radius (pi * r^2), does that explain why larger calibers for a given pneumatic airgun valve and tank generally give more power?
(I understand that might break down with a springer, since the impulse is limited by the time the piston is compressing, and not when rebounding.)

[HunterWhite]

Back about 1978 I took a computer magazine called 68 Micro Journal. That magazine printed the exact value of pi to the last digit that the latest super computer could calculate, it took six pages of fine print. They said that was not the exact value, just the largest number the computer could resolve.
I wonder how many pages it would take using the most powerful computer today?   .  .  .  Wait, what is a magazine?

Hunter 

[OldCrow]

It never stops ends or repeats.  How do I know this?  In the immortal words of Justin Wilson a Cajun humorist tells this story.

He sent his brilliant young son to Tulane University.  After four hard years he graduated and returned home.  He was the first person in their town to graduate college so the town turned out to meet him.  When he arrived his father took him up on the platform at the train station in front of all those people and said, "Now that you have been educated and have this woundermous degree, say somethin' smart for this people, your friends of the town."  Well the young man thought a moment and said, "Pi are squared".  Dad looked at him like he was crazy started swearing and cussing about the money he had wasted sending the boy to college and finally he says, "Any "dang" fool knows that pie are not square, pie are  round!"

So clearly it does not ever repeat or end.

[subscriber]

22/7

[Madd Hatter]

Back about 1978 I took a computer magazine called 68 Micro Journal. That magazine printed the exact value of pi to the last digit that the latest super computer could calculate, it took six pages of fine print. They said that was not the exact value, just the largest number the computer could resolve.
I wonder how many pages it would take using the most powerful computer today?   .  .  .  Wait, what is a magazine?

Hunter

A magazine is that thing you load your pellets or slugs into. Everybody knows that!!!

[subscriber]

More than four significant figures does not add as much value to a single cylinder disposable piston engine as savants think.  It amuses me to no end to see pellet mass, velocity or energy reported to multiple decimal places.

Pellet diameter and its fit with the barrel bore needs to be managed to sub 0.001" because there is potential for a "hard or sloppy " fit.  Velocity spread of single digits is impressive, but not to a fraction of a FPS.

[Hoosier Daddy]

22/7

OK.. I consider myself "some-what knowable" but this blew me away.
I had no idea!

[subscriber]

22/7

OK.. I consider myself "some-what knowable" but this blew me away.
I had no idea!

I was taught this close-enough approximation in grade school, back in South Africa, in the 1970s.

[bear air]

Your a hoot Frank.

[JPSAXNC]

I figured out that in some instances a number from 3-7 could be substituted for the equation for Pi.