UPSB v3
Advanced Tricks / 0.5 rotations vs. 1.0 rotations
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Date: Wed, Jun 2 2010 02:43:07
Can someone explain the difference of 0.5 rotations and 1.0 rotations?
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Date: Wed, Jun 2 2010 03:13:46
0.5 rotations means that the pen only spins 180 degrees/pi radians
1 rotation means that the pen spins one full circle/360 degrees/2pi radians
when used, it means that the pen comes pretty close to a half rotation or a full rotation, not exact -
Date: Wed, Jun 2 2010 03:21:51QUOTE (hoiboy @ Jun 1 2010, 11:13 PM) <{POST_SNAPBACK}>0.5 rotations means that the pen only spins 180 degrees/pi radians
1 rotation means that the pen spins one full circle/360 degrees/2pi radians
when used, it means that the pen comes pretty close to a half rotation or a full rotation, not exact
So, when doing a shadow, or something, why does the pen do three 0.5 rotations instead of one 1 and one 0.5 rotation? -
Date: Wed, Jun 2 2010 03:31:04
I think it's because:
Push = .5 spin
Spin = .5 spin
Catch = .5 spin
I may be wrong though. -
Date: Wed, Jun 2 2010 03:37:14
Thanks, guys!
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Date: Wed, Jun 2 2010 03:54:41QUOTE (MooseEatsBear @ Jun 1 2010, 11:21 PM) <{POST_SNAPBACK}>So, when doing a shadow, or something, why does the pen do three 0.5 rotations instead of one 1 and one 0.5 rotation?
3*0.5 rotations is the same thing 1 and 0.5 rotations
3*0.5 = 1.5
you're talking about numbers here.
0.5 + 0.5 + 0.5 = 1 + 0.5 = 1.5 -
Date: Wed, Jun 2 2010 16:14:27
but there are 3 distinct half-rotations instead of one full-rotation and a half-rotation;
i think that's what he was asking about -
Date: Wed, Jun 2 2010 16:19:53QUOTE (Zombo @ Jun 1 2010, 11:54 PM) <{POST_SNAPBACK}>3*0.5 rotations is the same thing 1 and 0.5 rotations
3*0.5 = 1.5
you're talking about numbers here.
0.5 + 0.5 + 0.5 = 1 + 0.5 = 1.5
Yes, but that's exactly what I'm talking about. When you're doing a shadow, why would it be 0.5 + 0.5 + 0.5 instead of 1 + 0.5 if they both equal the same thing? -
Date: Wed, Jun 2 2010 17:54:09
a shadow is not 3 distinct 0.5 rotations, im not sure where you read that
its 1.5 rotation EXCEPT when you land in T1 then its only 1.0
3 halftaps would be 3 distinct 0.5 rotations. -
Date: Wed, Jun 2 2010 18:35:09
I disagree ... even by our [p][s][c] notation it's recognized that a trick can be broken up into different parts, each with their own rotation count ...
The goal is to make it as fluid as possible, but a shadow is simply a sum of its parts, IE; a push, a spin, and a catch, each a distinct .5 rotations. -
Date: Wed, Jun 2 2010 19:21:48
ive never heard people callign shadow 0.5-0.5-0.5 though, so im not sure where the TC heard that.
its shadow (implied 1.5) and shadow 2.0 etc
the psc system doesn't allow rotations to be notated in p or c.
[p x] = The [p] stands for "push" and is placed after the trick name. This signifies the push portion of the trick. The x can be replaced by the finger(s) used to push the pen if different than its normal pushing finger(s).
[s x] = The [s] stands for spins. The "x" is replaced by the number of spins done in this section of the trick.
[c x] = This stands for "catch". It is done after the trick(s) that interrupts the first trick. This signifies that that is where the catch takes place. The x can be replaced by the fingers it finishes in (T1 or 34 or whatever), if the trick is not finishing in its normal end position. -
Date: Wed, Jun 2 2010 21:27:17
when i see a shadow i think oh yah there is like half a rev for each part hence the 1.5 revs.
idk about notation
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Date: Fri, Jun 4 2010 00:55:34
Zombo i understand what you are trying to say but what he is asking is why it is considered 3 0.5 rotations instead. I know it is 1.5 rotations in all and if you look at the numbers, 1 rotation + .5 rotation = 3*.5 rotations, but if you distinctly break down the trick completely, you will see what he is trying to ask about 3 parts with .5 rotations each.
As Strat was trying to say, there's .5 rotation done when you begin a charge to do the push, then its a .5 rotation on top of the hand, then finishes with the final .5 rotation as the pen goes into the finishing slot -
Date: Fri, Jun 4 2010 04:15:01
this is literally the first time I've heard someone describe the shadow as 3 times 0.5 rotations.
It makes sense and it's true, but I've never heard suchh notion popularized. -
Date: Fri, Jun 4 2010 11:16:20
Kind of stuffs things up if you start saying shadow is made up 3 0.5 rotation parts if you start cutting it short to link into other tricks, extending one part or do anything to change the number of rotations.
Anyway, this is getting to be a confusing mess! It's 1.5 rotations and who cares where and when and how and why they happen? It just is. -
Date: Fri, Jun 4 2010 21:08:10QUOTE (Zombo @ Jun 4 2010, 12:15 AM) <{POST_SNAPBACK}>this is literally the first time I've heard someone describe the shadow as 3 times 0.5 rotations.
It makes sense and it's true, but I've never heard suchh notion popularized.
Ohhh i think i know where everyone got that idea...
the idea of 3 .5 rotations is from Eso's tutorial of the shadow... he says theres 1.5 rotations in all, then describes how...
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