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- Xref: sparky rec.juggling:2933 rec.juggling:2934
- Newsgroups: rec.juggling,rec.juggling
- Path: sparky!uunet!caen!news.cs.indiana.edu!allenk@ugcs.caltech.edu
- From: allenk@ugcs.caltech.edu (Allen Knutson)
- Subject: Re: Challenge to Everyone (physics)
- Message-ID: <9211201614.AA27677@torment.ugcs.caltech.edu>
- Sender: daemon@news.cs.indiana.edu
- Organization: Computer Science, Indiana University
- References: <1egrctINNlh2@agate.berkeley.edu>
- Date: Fri, 20 Nov 92 08:14:33 -0800
- Lines: 28
-
- Jack Boyce writes about juggling on an inclined plane:
-
- >This has essentially been done before, by none other than Claude Shannon
- >(the father of information theory, he's also a juggler on the side). His
- >scheme was to use an inclined air-hockey table. The lower friction,
- >as well as the fact that the objects don't have to spin, presumably
- >results in more "realistic" trajectories. It seems to me that the
- >problem with these schemes is that the thing you're training your body
- >to learn isn't strictly what you want to learn -- the objects are
- >confined to a plane automatically, so you're not exercising that part
- >of your brain which controls this.
-
- I think the three main things that the beginning juggler has to learn are
- (1) not to panic just because there's a ball in the air
- (2) to wait after a high throw
- (3) to throw from the middle to the outside to avoid collisions
- all of which are still necessary to learn (the third even moreso) on the
- inclined plane. The reason people have trouble staying in a plane is that
- they are born with the instinct to avoid collisions, and don't realize
- they have to throw past where their hand wants to be.
-
- > 1. Juggling underwater (constant bouyancy force). Adjust the
- > ball density to achieve different effective gravities. The
- > problem here is comfort, as well as drag due to viscosity
- > (which needs to be substantially less than the force of gravity)
-
- How about juggling under a high-pressure xenon-oxygen mix?
- Allen K.
-