What had you learned today that you found interesting?

Nehushtan · 2016-04-19 09:57:33

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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Nehushtan · 2017-06-18 08:35:05

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

Nehushtan · 2017-07-23 05:35:53

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)

Nehushtan · 2017-08-06 06:55:25

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)

Agnishom · 2017-08-11 22:53:02

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

Monox D. I-Fly · 2017-08-12 01:06:29

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

Nehushtan · 2017-08-12 21:12:13

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

Monox D. I-Fly · 2017-08-13 01:48:10

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.

zetafunc · 2017-08-13 01:53:32

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?

Nehushtan · 2017-09-10 04:14:54

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

Monox D. I-Fly · 2017-09-10 17:51:54

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.

Βεν Γ. Κυθισ · 2018-10-10 11:42:10

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

Jai Ganesh · 2018-10-10 15:36:08

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.

zahlenspieler · 2018-11-14 14:53:18

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

is actually a hyperbola with foci

Jai Ganesh · 2018-11-21 01:04:46

Hi,

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

iamaditya · 2019-03-25 23:11:14

bobbym wrote:

I have learned that if a = b and b = c then it follows that a = c.

Is that true, Bobbym?

Lol!
Rofl!

Alg Num Theory · 2019-04-29 19:26:51

I recently started learning about partial differential equations. The video gives the heat equation as an example of a PDE – and includes a fascinatingly watchable derivation of the equation discovered by Joseph Fourier.

Another example of a PDE is the wave equation:
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where ψ(x,t) is the function of a one-dimensional wave with position x at time t and c is the speed of propagation of the wave. If the wave has amplitude A, frequency f and wavelength λ, then c = fλ and the wave function has a complex solution given by
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where ω = 2πf is the angular frequency and k = 2π/λ is the wavenumber. Note that:
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– that is to say, the motion of each point of the wave is simple harmonic.

Jaspers · 2019-07-02 07:41:37

Today I learned the word thigmomorphogenesis, which is the way plants grow in response to touch.

Math Is Fun Forum

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

#41 2019-03-25 23:11:14

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

#42 2019-04-29 19:26:51

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

#43 2019-07-02 07:41:37

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

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