[time-nuts] Spark timer.

[Jim Harman]

On Sat, Nov 23, 2019 at 2:01 AM Peter Reilley <preilley_454 at comcast.net>
wrote:

>
> It works fine, what could actually go wrong with something so simple?
>
> I remember using one of these in a physics lab acceleration experiment.
One thing that could go wrong was that if the paper tape jammed or moved
too slowly, it would catch on fire!
-- 

--Jim Harman