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I bet you didn't know that this thread would have a part 2
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Horses have the remnants of what people think might be an extra toe their ancestors had. Some people think its a scent gland. Some peeps say they protect some ligaments.
They are called ergots and they are under the fetlocks. They also have chestnuts which are made of the same callousy tissues above the knee and below the hock.
On some horse breeds they don't grow much. But on draft horses they grow much faster. If they get really long they can snag on stuff and bleed. So its best to tame em. You break them off or keep them trim. Use oil so they don't bleed.
A farrier can do it. But doing it yourself is the most satisfying thing ever. Use some oil.
I SO want to pick these off. I am weird.
WAY OVERGROWN Chestnuts
This is what they should look like
Ergots due for a trim.
Some breeds don't have much ergots or chestnuts on the back. Most have four though. Generally cold bloods grow them faster.0 -
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The central nervous system is made up of the brain and spinal cord, and the peripheral nervous system covers all the branches outward and around your body, all the nerves from the tip of your fingers to the top of your toes. This is further subdivided into two categories, the autonomic and the somatic nervous system. The autonomic system regulates your voluntary movements and the somatic the involuntary, knee jerk reactions you have no conscious say over.
Excellent sumation of our differing categories of nervous system Candie;
just want to point out that it's the somatic system that is voluntary and the autonomic which is unconscious
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Batrachotox wrote: »Excellent sumation of our differing categories of nervous system Candie;
just want to point out that it's the somatic system that is voluntary and the autonomic which is unconscious
Typing (and thinking) while tired is a bad idea. 0 -
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They're up to 2.7 trillion digits after the decimal point now, with no patterns emerging yet .
That's 2,700,000,000,000... But only 39 points are required to calculate the circumference of the known universe to within the width of a hydrogen atom.
So I don't really know why it matters how far it goes before it becomes patternic (made that word up) 0 -
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Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 90,746 Mod ✭✭✭✭
Join Date:Posts: 88986
22 over 7 is NOT a good approximation.I know enough to know that that is not true. Pi is irrational. 22/7 is a rational number.
...
I know in school we used 22/7 as a good approximation.
It's nearly five thousand times further from Pi than dividing 113 into 355.
As for calculating Pi there are two main ways
- one is to use a shape like a hexagon or dodecahedron inside the circle and another outside it. Then from the centre you divide them into triangles.
The triangle on the inside is an isosceles triangle, the long sides are the radius of the circle and the short side is slightly shorter than the curved part of the circle.
The triangle on the outside is continuation of the triangle above into a right angle triangle. Same angle at the centre, same base , except the top side is now very slightly longer and the small side is slightly longer than the curved part of the circle.
So you now have two approximations to Pi , one slightly higher and one slightly lower and the answer must be somewhere in between.
- two you find an equation that Pi pops up in
some work better than others http://mathworld.wolfram.com/PiFormulas.html
This is one of the simplest and worst
Simplest because you add and subtract alternative reciprocals of every odd number.
Worst because to get to 355/113 accuracy you have to through millions of steps.
https://en.wikipedia.org/wiki/Leibniz_formula_for_%CF%800 -
Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 90,746 Mod ✭✭✭✭ Join Date:Posts: 88986
Like searching for primes it's a traditional way to test or burn in a new super computer. Also bragging rights.Chancer3001 wrote: »Anyone know why they care so much ?
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Basically every function can be written as a combination of simple functions with an increasing number of bumps in them. You can see this process in action here:I won't get into *why* that's the case as I think it's too much for me.
As more of the simple functions are added they get closer to the main function shown in blue.
In these series for pi what's going on is that the value of the main function at some point is pi and the 1, -1/3, 1/5,... are the values of the simple functions at that point.
A simpler way to imagine it is basically music. The true function is an actual piece of music let's say. The simple functions are each individual note. They have to combine to give the actual piece of music. So you pick a part of the song where the music is Pi decibels loud and you know how loud each note is must add up to Pi.
The different ways of getting Pi are just different song choices and for some the notes add up quicker because the song is dominated by those notes.0
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