[GreenKeys] Use a strobe light to see movement

[sdaitch at mor.ibb.gov]

We used an older General Radio Strobe-O-Scope to check repetitive mechanical movements.

See:

http://www.ietlabs.com/stroboscope.html

73
Sheldon


----- Original Message -----
From: Buzz <muttman at charter.net>
Date: Monday, January 1, 2007 5:17 am
Subject: [GreenKeys] Use a strobe light to see movement
> 
> Back in the 70's when I was learning tty my daughter had a disco 
> strobe light 
> that I used to watch the mechanical action of the tty machines. 
> By adjusting 
> the speed of the light you can actually stop the action. 
> Lately I've seen super bright LED strobe light kits so you can do 
> away with the 
> HV and all that. 
> 
> Buzz