Australian Politics Forum - Relationship to maths

Jovial Monk Gold Member Offline Dogs not cats! Posts: 46198 Gender:	Relationship to maths Aug 25^th, 2021 at 2:13pm Use of set theory to definitively prove 1 + 1 = 2
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lee Gold Member Offline Australian Politics Posts: 17417 Gender:	Re: Relationship to maths Reply #1 - Aug 25^th, 2021 at 2:31pm Except in Climate Seance.
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Jovial Monk Gold Member Offline Dogs not cats! Posts: 46198 Gender:	Re: Relationship to maths Reply #2 - Aug 25^th, 2021 at 3:01pm Of tiles and crystals:
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Jovial Monk Gold Member Offline Dogs not cats! Posts: 46198 Gender:	Re: Relationship to maths Reply #3 - Aug 25^th, 2021 at 3:06pm The bizarre behavior of rotating bodies:
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Jovial Monk Gold Member Offline Dogs not cats! Posts: 46198 Gender:	Re: Relationship to maths Reply #4 - Aug 25^th, 2021 at 3:06pm There you go, a bit of a feast for the mind, assuming you have one.
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Super Nova Gold Member Offline Posts: 3066 Everywhere Gender:	Re: Relationship to maths Reply #5 - Aug 25^th, 2021 at 3:08pm Jovial Monk wrote on Aug 25^th, 2021 at 3:06pm: The bizarre behavior of rotating bodies: i have seen this one. Really cool. I assume this one is the video where the Russians first observed it in space and kept it quite for 10 years.
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Jovial Monk Gold Member Offline Dogs not cats! Posts: 46198 Gender:	Re: Relationship to maths Reply #6 - Aug 25^th, 2021 at 3:10pm Yup.
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Jovial Monk

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Re: Relationship to maths
Reply #7 - Aug 25^th, 2021 at 3:32pm

Kepler’s laws of planetary motion:

1. Each planet's orbit about the Sun is an ellipse. The Sun's center is always located at one focus of the orbital ellipse.

2. The radius vector from the sun to a planet sweeps equal areas in equal times.

3. The ratio of the square of the period of revolution and the cube of the ellipse semimajor axis is the same for all planets.

(For a circle each axis = 1 diameter. An ellipse has a major (longer) and a minor (shorter) axis. A circle has one centre, an ellipse has two and an ellipse has two radii.)

Newton took Kepler’s three Laws and derived his much more useful laws of motion from them.

Einstein showed Newton’s Laws were an approximation. They are still used and useful until speeds get to a small but measurable fraction of the speed of light.

Newton’s Laws summarised motion. Einstein’s theory predicted relativistic changes to motion. A scientific Law is not a theory!

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Jovial Monk

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Re: Relationship to maths
Reply #8 - Aug 25^th, 2021 at 3:35pm

The secret of synchronisation:

Avrogardo’s Number:

Avogadro's number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×10²³ mol-1 and is expressed as the symbol NA. Avogadro's number is a similar concept to that of a dozen or a gross. A dozen molecules is 12 molecules.

Yes, I am a bit bored, shoulder joints and lower back giving me a more than bit of gyp and I am stuck here until Aussie’s fruitcake is cooked. But this stuff IS fascinating if you have an ounce of curiosity in your body. (Remember: curiosity only kills cats!)

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« Last Edit: Aug 25^th, 2021 at 3:45pm by Jovial Monk »

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John Smith Gold Member Offline Australian Politics Posts: 74337 Gender:	Re: Relationship to maths Reply #9 - Aug 25^th, 2021 at 8:13pm Jovial Monk wrote on Aug 25^th, 2021 at 3:06pm: The bizarre behavior of rotating bodies: my 11 year old found that 'cool' . I have to admit I agree with him.
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Aussie Gold Member Offline OzPolitic Posts: 38569 Gender:	Re: Relationship to maths Reply #10 - Aug 25^th, 2021 at 9:06pm I 'get' the oscillating one only because it is logical. As for the mathematical explanation....no idea. That tennis racket thing, I can follow but it makes no logical sense *to me*.
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Jovial Monk Gold Member Offline Dogs not cats! Posts: 46198 Gender:	Re: Relationship to maths Reply #11 - Aug 26^th, 2021 at 8:34am John Smith wrote on Aug 25^th, 2021 at 8:13pm: Jovial Monk wrote on Aug 25^th, 2021 at 3:06pm: The bizarre behavior of rotating bodies: my 11 year old found that 'cool' . I have to admit I agree with him. Glad you two enjoyed it.
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Jovial Monk

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Re: Relationship to maths
Reply #12 - Aug 26^th, 2021 at 8:37am

Aussie wrote on Aug 25^th, 2021 at 9:06pm:

I 'get' the oscillating one only because it is logical. As for the mathematical explanation....no idea.

That tennis racket thing, I can follow but it makes no logical sense to me.

More than one axis of rotation, each with different moments of inertia. “Moment of inertia” is used in place of speed in rotating objects.

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John Smith Gold Member Offline Australian Politics Posts: 74337 Gender:	Re: Relationship to maths Reply #13 - Aug 26^th, 2021 at 4:58pm Aussie wrote on Aug 25^th, 2021 at 9:06pm: I 'get' the oscillating one only because it is logical. As for the mathematical explanation....no idea. That tennis racket thing, I can follow but it makes no logical sense *to me*. my 11 year old is smarter than you ... he got it
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Aussie

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Re: Relationship to maths
Reply #14 - Aug 26^th, 2021 at 4:59pm

John Smith wrote on Aug 26^th, 2021 at 4:58pm:

Aussie wrote on Aug 25^th, 2021 at 9:06pm:

I 'get' the oscillating one only because it is logical. As for the mathematical explanation....no idea.

That tennis racket thing, I can follow but it makes no logical sense to me.

my 11 year old is smarter than you ... he got it Tongue

Yeah...well fuq him!

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« Last Edit: Aug 26^th, 2021 at 5:07pm by Aussie »

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