(TFT) Re: fST, Baseball, and other eddies in the stream of consciousness

[Mark Tapley <mtapley@swri.edu>]

At 6:58 PM -0400 4/24/09, Jay wrote:
> Oh yeah fST comes back WAY quicker than 1pt per 15 minuets unless 
> someone is WAY outta shape.

Good question. After a soccer game, I'm *definitely* whacked the 
following day. But after running up stairs once, I do recover pretty 
quick. I'd say "fST" is a simplifying abstraction for an (at least) 
three dimensional space of characteristics.

Oxygen debt - does recover pretty quick, way more than 3 hours back to normal.

Lactose buildup (or whatever it is that happens when you sustain 
intense activity for an hour or so). - Takes more than a day to 
recover.

Age of the participant (lord I hate having to bring this up) - I 
don't get better as fast as I used to. Used to be a a steak and a 
glass of ice tea, and I was good to go again. No more.

And then there's just plain muscle tissue degradation, like you get 
from strength training. That takes (typically) a day to heal, which 
is why trainers recommend a strenuous day, then an off day, then a 
strenuous day, to build strength fastest.

> Now if I allot one hour of training per day to physical training, my 
> martial wizards should be physically fit and recovering fST more on 
> the order of an athlete.

I think it's a good idea in any case. Evidence is some physical 
activity is the best way to promote mental sharpness. But then, here 
I sit before a keyboard all day.... :-(

------

I like the staff and bandolier!

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> A katana blade was about 3.5 feet long, with the sharp portion of 
> the blade being the last 6 inches.
> That's about 13 Scale-squares or moments long.
> 2 + 2 damage?
> But the "sweet spot" is at the end.

	"sweet spot" can actually be defined pretty well using 
dynamics. It's the point where if an impulsive increment of momentum 
is delivered to a bat, the bat's motion about its center of rotation 
is slowed but no net torque *other* that that is applied to the bat 
(so it doesn't "jump" in the hands of the batter). It depends on the 
mass distribution of the bat, and on the center about which it is 
rotating (somewhere near the midpoint of the batter's torso). It's 
*not* at the end of the bat. An impulse there would tend to make the 
end of the bat stop, but the handle "jump ahead". Likewise, an 
impulse near the handle would tend to stop the handle but make the 
outer end "jump ahead".

	Guess that's not a very good description, but anyway, the 
point is the "sweet spot" is neither at the end of the bat nor at its 
center of mass (though it's not far from the CM). I assume a similar 
situation applies for a katana.

--
						- Mark     210-379-4635
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