Tachometer

[jim ivey]

Hey Steve,
Leave it to you to get in trouble.

Jim Ivey



jivey61 at msn.com





>From: "spbyrum" <spbyrum at hiwaay.net>
>Reply-To: discussion at nsrca.org
>To: <discussion at nsrca.org>
>Subject: RE: Tachometer
>Date: Fri, 24 Oct 2003 20:46:33 -0500
>
>I told my teenage daughter I had a meter that would tell how fast her
>lips flapped when she talks.  I stood her under a fluorescent light in
>the shop and showed her my tach reading 3600.  I then explained that if
>her mouth average 1" of movement each time it moved, her lips were
>running almost 35 mph.  She was instantly suspicious and wanted to know
>how I did that.  I told her it was science and meters.
>
>She was not amused when I told her the truth several days later.
>
>-----Original Message-----
>From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
>On Behalf Of jim ivey
>Sent: Friday, October 24, 2003 7:17 PM
>To: discussion at nsrca.org
>Subject: Tachometer
>
>
>Ok time for another thread.
>I just put batteries in my tachometer and I want to calibrate it. If I
>set
>it to sense a 2 blade prop and hold it to the flourescent light bulb in
>the
>kitchen, what should it read. There are 120 pulses of light on 60
>cycles.
>Why does it read 36. If I select a 3 blade prop it reads 23.  WHY. What
>should I set it to read looking at this light?
>
>Jim Ivey
>
>
>jivey61 at msn.com
>
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