Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#26 2016-04-19 09:57:33

Nehushtan
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Registered: 2013-03-09
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Re: What had you learned today that you found interesting?

Olinguito wrote:

I learn that it is possible to make a tetradecahedron with just regular hexagons and squares.

It is also possible to make a truncated icosahedron with regular pentagons and hexagons.

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#27 2017-06-18 08:35:05

Nehushtan
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Re: What had you learned today that you found interesting?

Today I learned that Tabriz is a city in Iran, and that peridotite is an ultrabasic rock.


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#28 2017-07-23 05:35:53

Nehushtan
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Registered: 2013-03-09
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Re: What had you learned today that you found interesting?

Today I learn that types of ceramic pottery include earthenware, stoneware, and porcelain. These are fired at increasingly higher temperatures. Earthenware is porous and so is often glazed.

Also, Capella is the brightest star in the constellation Auriga.

Last edited by Nehushtan (2017-07-23 06:33:16)


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#29 2017-08-06 06:55:25

Nehushtan
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Registered: 2013-03-09
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Re: What had you learned today that you found interesting?

Today I learn that Tamil, Telugu, Malayalam and Kannada are Dravidian languages – even though they all use different writing scripts.

Last edited by Nehushtan (2017-08-06 06:55:39)


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#30 2017-08-11 22:53:02

Agnishom
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From: Riemann Sphere
Registered: 2011-01-29
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Re: What had you learned today that you found interesting?

I learnt that if an automaton with exactly n states accepts all strings of length n or less, then it accepts all strings.


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.

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#31 2017-08-12 01:06:29

Monox D. I-Fly
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From: Indonesia
Registered: 2015-12-02
Posts: 1,306

Re: What had you learned today that you found interesting?

I learned that the online/offline status of LAN messenger depends on the monitor instead of the CPU.


Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

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#32 2017-08-12 21:12:13

Nehushtan
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Registered: 2013-03-09
Posts: 917
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Re: What had you learned today that you found interesting?

I have just learnt that the world's largest flower is the Rafflesia arnoldii, a parasitic plant that grows in the rainforests of Indonesia.


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#33 2017-08-13 01:48:10

Monox D. I-Fly
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From: Indonesia
Registered: 2015-12-02
Posts: 1,306

Re: What had you learned today that you found interesting?

Yup, that's my country.

Today I learned that a nickel is a tenth of a dollar and a dime is a twentieth of a dollar.


Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

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#34 2017-08-13 01:53:32

zetafunc
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Registered: 2014-05-21
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Re: What had you learned today that you found interesting?

Monox D. I-Fly wrote:

a nickel is a tenth of a dollar and a dime is a twentieth of a dollar.

Are you sure?

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#35 2017-09-10 04:14:54

Nehushtan
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Registered: 2013-03-09
Posts: 917
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Re: What had you learned today that you found interesting?

I learn that Sibi is a city in Pakistan, Sibiu is a city in Romania, and Sibu is a city in Malaysia.


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#36 2017-09-10 17:51:54

Monox D. I-Fly
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From: Indonesia
Registered: 2015-12-02
Posts: 1,306

Re: What had you learned today that you found interesting?

zetafunc wrote:
Monox D. I-Fly wrote:

a nickel is a tenth of a dollar and a dime is a twentieth of a dollar.

Are you sure?

That's what Google said.


Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

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#37 2018-10-10 11:42:10

Βεν Γ. Κυθισ
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Registered: 2018-10-09
Posts: 16

Re: What had you learned today that you found interesting?

I learnt that sine, cosine, and hyperbolic tangent all have attractive fixed points.

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#38 2018-10-10 15:36:08

ganesh
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Registered: 2005-06-28
Posts: 26,457

Re: What had you learned today that you found interesting?

I learnt that there are 14 elements in the periodic table having single alphabet symbol in Chemistry. They are Hydrogen, Boron, Carbon, Nitrogen, Oxygen, Florine, Phosphorous, Sulfur, Potassium, Vanadium, Yttrium, Iodine, Tungsten, and Uranium.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#39 2018-11-14 14:53:18

zahlenspieler
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Registered: 2018-04-12
Posts: 7

Re: What had you learned today that you found interesting?

Hi, actually I learned that not today but some 35 years ago or so: The curve given by

is actually a hyperbola with foci

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#40 2018-11-21 01:04:46

ganesh
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Registered: 2005-06-28
Posts: 26,457

Re: What had you learned today that you found interesting?

Hi,

I learnt long time back approximate value of 100! is 9.332622e+157, checked today for accuracy.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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