Bill Taylor's Show and Tell

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From: Marc Kossover (zeke_kossover@yahoo.com)
Date: Thu Jul 22 2004 - 17:04:08 PDT 

Message-ID: <20040723000409.13697.qmail@web53407.mail.yahoo.com>
Date: Thu, 22 Jul 2004 17:04:08 -0700 (PDT)
From: Marc Kossover <zeke_kossover@yahoo.com>
Subject: Bill Taylor's Show and Tell

Howdy-

I'll number the items

1 2
3 4
5 6

1)
<http://www.exploratorium.edu/ti/alumni/show_and_tell/bills/Picture%2020.jpg>
Pasco Friction Block. See
<http://store.pasco.com/pascostore/showdetl.cfm?&DID=9&Product_ID=51553&Detail=1>
This block has felt on one wide side and one narrow
side and bare wood on the other two sides. It is used
for measuring friction. Many experiments exist, but
the classic is hanging a pan over a pulley and
attaching it the block. Weight is added to the pan
until it starts to move. The initial weight necessary
allows determination of the coefficient of static
friction, while the acceleration of the block (often
measured with a smart pulley) is used to determine the
coefficient of kinetic friction. The only advantage of
these blocks over others that you could make yourself
is that they are very regular so that the whole class
would likely get the same values.

2)
<http://www.exploratorium.edu/ti/alumni/show_and_tell/bills/Picture%2022.jpg>
I can't make out this item from the picutre.

3)
<http://www.exploratorium.edu/ti/alumni/show_and_tell/bills/Picture%2023.jpg>
Adjustible Angle Lab Clamp, also sold by Pasco. See
<http://store.pasco.com/pascostore/showdetl.cfm?&DID=9&Product_ID=52452&Detail=1>
These are handy as they allow you to connect bars at
any angle rather than just at 90 degrees. They are
made of plastic however, and aren't as durable as the
metal ones.

4)
<http://www.exploratorium.edu/ti/alumni/show_and_tell/bills/Picture%2024.jpg>
Track and Rod Clamp. Pasco, but I can't find it in
their catalog. It is useful. It connects to their
dynamics track and then to a ring stand so that you
can change the angle of the track.

5)
<http://www.exploratorium.edu/ti/alumni/show_and_tell/bills/Picture%2025.jpg>
I don't know for sure. Looks like a Pasco product
though.

6)
http://www.exploratorium.edu/ti/alumni/show_and_tell/bills/Picture%2026.jpg>
Harmonic Springs.
<http://store.pasco.com/pascostore/showdetl.cfm?&DID=9&Product_ID=51550&Detail=1>
These are connected between dyanmics carts or air
track carts to simulate complicated wavelike
interaction. They are very low k springs and are
stretched easily beyond their elastic limit, leaving
them deformed.

        
                
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