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Article #382

#382

From: Doug Purdy
Date: Sat, 09 Jan 1993 09:28

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 > Doug-
 > I have an article from Oct '90 about an activity for 7th
 > graders.  About a trasportation device - powered by a
 > vacuum - if that rings a bell could you fill in the
 > missing spots?
 > Thanks
 > -Joe-
 > ---
 > [37m * Origin: Get Technology before it gets YOU! Honeoye
 > NY  USA (1:2613/516)
 >
Yea, It was fun. A 20' piece of 4" pvc sched. 40 pipe. A  4x4x2" T on the end

                  -->  vacuum is hooked in here
                  |
              --- 2"---------------------------------------------------------
 clear plug--> 4"    4"   <----vehicle travels here -----------------------
              ---------------------------------------------------------------

I put a video camera looking through the clear plug and displayed it on TV.

Basically, a light weight vehicle that seals the cylinder works best. Never
 had an egg "passenger" break inside. They drop them on the floor :-)

I also hooked up Science Toolkit to check speed of vehicle

Doug


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From: Doug.Purdy@f19.n267.z1.fidonet.org (Doug Purdy)
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Subject: Hello?
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Date: Sat, 09 Jan 93 02:28:22 PDT
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