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2-Guest

## Happy Pi Day

For all the mathematics fans out there, I wish you a Happy Pi Day (3/14); celebrating everyone's favorite mathematical constant

Here are some ways to celebrate >>

-Dan

33 REPLIES 33
23-Emerald III
(To:DanMarotta)

Dan,

I have some problems with your statement, on mathematical and logic grounds.

- 3/14=0.2142857.... which is far away from 3.14159265....

- While it is easy to prove that there exist no uninteresting numbers, I doubt that you can prove that Pi is everyone's favourite mathematical constant.

Luc

19-Tanzanite
(To:LucMeekes)

To me, e seems more natural

23-Emerald II
(To:RichardJ)
 Richard Jackson wrote:To me, e seems more natural

Agreed. I'm a great exponent of eating πie off a log table made from the branches of trees with square roots (although some think this is rather radical, I think it's an integral part of the experience; it's what differentiates the true mathematician from the remainder)

19-Tanzanite
(To:StuartBruff)

Yes, under the right circumstances a good πie can be an almost transcendental experience; the complex flavors can transport you to an imaginary domain. Nevertheless, whether or not π is 1’s favorite mathematical constant is a function of 1’s personal preferences. Clearly, in sum ways π is greater than e, but e has it’s base of supporters too.

Stuart, Richard,

Pi must be baked at the correct Degree or it will not achieve a Golden [brown] Ratio. I'm Maxed out on my mathematical play on words because I'm a Square.

Binomial for now,

Dan

2-Guest
(To:LucMeekes)

Luc,

I must ask, do you have a personal favorite if it is not Pi?

23-Emerald III
(To:DanMarotta)

Dan,

I always felt myself more intrigued by e.

Luc

24-Ruby IV
(To:DanMarotta)

Students in Russia know the second math constant e as 2.7 (all know it) + two times... Leo Tolstoy - a year of him born - 2.718281828.

20-Turquoise
(To:ValeryOchkov)

Loi.

20-Turquoise
(To:lvl107)

20-Turquoise
(To:lvl107)

20-Turquoise
(To:lvl107)

5-Regular Member
(To:DanMarotta)

Happy pie day

Mike

24-Ruby IV
(To:MikeArmstrong)
 Mike Armstrong wrote:Happy pie dayYes - three base math constants - p (p+Ctrl+G), i and e.

Mike,

Where's the vanilla ice cream?

5-Regular Member
(To:DanMarotta)

Here you go - there goes the diet.....

Mike

19-Tanzanite
(To:MikeArmstrong)
 there goes the diet.....

I though a slice of pie, rather then the entire pie, with only two scoops of ice cream was the diet.

5-Regular Member
(To:RichardJ)
 I though a slice of pie, rather then the entire pie, with only two scoops of ice cream was the diet.

Oh yer, good point. (As he heads back to the frezzer for the rest of the tub)

Mike

23-Emerald II
(To:DanMarotta)
 DanMarotta wrote:Mike,Where's the vanilla ice cream?

Look, enough of the food, already. Where's the beer? Being pi-eyed is the ultimate tribute to our e-ponymous number!

24-Ruby IV
(To:MikeArmstrong)
 Mike Armstrong wrote:Happy pie day Mike

Mike,

You have a Pi-snack - and here is the Pi-drinking.

The price of vodka in Soviet times long time was:

0.25 liters - 1 ruble 49 kopecks and 0.5 liters - 2 rubles 87 kopecks.

1.49^2.87=3.14

5-Regular Member
(To:DanMarotta)

I do have one issue:- I can't believe anyone celebrates pie day like pancake day.

Mike

24-Ruby II
(To:DanMarotta)

Happy pi/pie day:

24-Ruby IV

More practical Pi-pie

24-Ruby IV
(To:ValeryOchkov)

More about Pi day and Pi Pie (Fractions).

Why I did not have Mathcad with gcd function in the first class of my school

24-Ruby IV
(To:DanMarotta)

Happy Pi, e & i day.

The 6 of the Mathcad Clock has Pi, e & i - 3 base Math constants:

I'd like to remember Pi Day by making reference to one of your previous posts, Valery. (I could not think of a good reply to your remarks about Laplace transforms, so I did not post there.)

A circular slide rule is compact precisely because it wraps a linear slide rule around the circumference of a circle. The key to the transformation is pi.

Here is a snapshot of my own circular slide rule, a Sama and Etani "Model 90" (the diameter is 90 mm). Note that the "1" indicator on the C scale is lined up with pi on the D scale. So slide (rotate) the red indicator around to 9 on the C scale (for 90 mm) and read off 2.83 (i.e., 283 mm) from the D scale. Therefore, pi times the diameter 90mm is the circumference 283 mm.

Since there are 25.4 mm to an inch, we get 283/25.4 = 11.1 inches. To do this division on the circular rule, rotate the C scale until 2.54 is beneath 2.83 on the D scale. Then the C scale's "1" indicator points to 1.11 (11.1 inches) on the D scale. So our circular slide rule is equivalent to an 11-inch straight rule, at least for multiplication and division, since they use scales near the circumference of the rule.

Pi rules!

24-Ruby IV
(To:RogerMansfield)
 RogerMansfield wrote:(I could not think of a good reply to your remarks about Laplace transforms, so I did not post there.)

I was very sad when it has not received replies to a comment about the Laplace on the forum on Slide rule.

Variants:

• I'm wrong
• My colleagues on the forum do not understand this fine topic
• ???

I do think that you are right, and for my part, I did understand. But all I could think of to add to that discussion was that I thought your demonstration was very insightful. It occurred to me to attempt to prove your results using the definitions and properties of Laplace direct and inverse transforms, but I just don't have the time right now to go in that direction ...

24-Ruby IV
(To:RogerMansfield)

When I was a student it was high art get mantissa and evaluate the order (power?) of the numbers on the slide rule ...

I have have have have numbers!

But now... With computer...

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