Today I Learned

[Ibix]

I memorised all 11 digits of pi this morning

I know all the digits of pi[1]. It's just the order I have trouble with.

[1] There are only two if you work in binary.

 

[fresh_42]

I know all the digits of pi[1]. It's just the order I have trouble with.

[1] There are only two if you work in binary.

No need to memorize the order, I have heard they are random.

 

[etotheipi]

I am well informed by my engineering friends that the first 11 digits are precisely 3.0000000000

 

[fresh_42]

I am well informed by my engineering friends that the first 11 digits are precisely 3.0000000000

Only during the undergraduate study. It turns out to be 22/7 in the master classes.

 

[etotheipi]

Only during the undergraduate study. It turns out to be 22/7 in the master classes.

Nonsense, 22/7 has an infinite decimal expansion, whilst by the fundamental theorem of engineering it's trivial to see that $\pi$ must in fact terminate.

 

[mfb]

pi=10

Always choose the basis base most convenient for the given task.

 

[DrGreg]

pi=10

Always choose the basis most convenient for the given task.

When you say "basis", do you mean "base", i.e.$$
1 \times \pi^1 + 0 \times \pi^0 \quad ?
$$

 

[mfb]

Yes.
German uses "basis" both for vector spaces and bases of numbers, forgot that English does not.

 

[hutchphd]

I see that the present Indiana General Assembly is only recapitulating its long and proud intellectual tradition:
https://en.wikipedia.org/wiki/Indiana_Pi_Bill

 

[jim mcnamara]

@hutchphd Indiana is # 12 in a list of states for deaths per 100M from Covid. Not enviable.
From here:
https://www.worldometers.info/coronavirus/country/us/

 

[hutchphd]

We have both lots of old people and lots of the "less important" people. Actually the vaccination program here has been surprisingly good (I got my second Moderna two weeks ago at the Kroger three blocks from my door...I am 69) so I am not personally very worried. Good thing I am computer literate (and white) of course.

 

[Jarvis323]

Whoaa! Life on Mars! They've found it!

NASA Announces Life on Mars

 

[Frigus]

Whoaa! Life on Mars! They've found it!

NASA Announces Life on Mars

I was about run on street shouting "nasa found life on Mars"

 

[Borg]

Whoaa! Life on Mars! They've found it!

NASA Announces Life on Mars

People should mark this day on their calendar.

 

[jack action]

 

[Frabjous]

Only during the undergraduate study. It turns out to be 22/7 in the master classes.

I like to think of myself as a 355/113 guy.

(355/113 - Pi ~ 2.7e-7)

 

[mfb]

I was about run on street shouting "nasa found life on Mars"

Life found NASA on Mars!

 

[Klystron]

Pi, shmi. I like e the base of the natural logarithms. And its first digit is to too, two to, tutu, 2 also.

 

[gmax137]

Pi, shmi. I like e the base of the natural logarithms. And its first digit is to too, two to, tutu, 2 also.

Here, let me help: "And its first digit is Desmond."

 

[Klystron]

Pi, shmi. I like e the base of the natural logarithms. And its first digit is to too, two to, tutu, 2 also.

Here, let me help: "And its first digit is Desmond."

Think... think... Desdemona?... Desiderius?... "click!"... "Desmond Tutu!" lol.

 

[jack action]

 

[mfb]

TIL about Roman dodecahedrons. They have been found in many places, so they were clearly a thing - but no one knows why.

 

[fresh_42]

TIL about Roman dodecahedrons. They have been found in many places, so they were clearly a thing - but no one knows why.

That is completely clear to me. It is a "Knochen". Sorry, I have no idea how to find the English word for it.

 

[Tom.G]

That is completely clear to me. It is a "Knochen". Sorry, I have no idea how to find the English word for it.

View attachment 281411

In the U.S. it is a "Dog Bone Wrench."

 

[mfb]

That is completely clear to me. It is a "Knochen". Sorry, I have no idea how to find the English word for it.

With round holes with inconsistent diameter?

Knochen=Bone

 

[fresh_42]

With round holes with inconsistent diameter?

Knochen=Bone

The Romans were around in many places. They've found the artifact only in Celtic areas. Ergo: universal beer bottle opener!

 

[Frabjous]

TIL about Roman dodecahedrons. They have been found in many places, so they were clearly a thing - but no one knows why.

I always like when we find mysterious ancient tech. It keeps us humble.

I also like the line from the wiki
”A Roman icosahedron has also come to light after having long been misclassified as a dodecahedron.”

 

[jack action]

TIL about Roman dodecahedrons. They have been found in many places, so they were clearly a thing - but no one knows why.

I knew what to do with those when I was 2 years old:

 

[Keith_McClary]

They've found the artifact only in Celtic areas. Ergo: universal beer bottle opener!

Hmm. So much for my spagghetometer theory.

 

[hmmm27]

They've found the artifact only in Celtic areas. Ergo: universal beer bottle opener!

Snake trap, invented by an ex-Roman slave.