[time-nuts] beats was Re: If there a FAQ

[Mike Naruta AA8K]

Have you ever tried humming while watching a propeller?
The strobe effect is fascinating.

My flight instructor thought that I was crazy until he tried it.


Mike - AA8K


On 11/29/2010 09:51 AM, jimlux wrote:
>
> if one has a voltmeter (or total power detector, like your ear), hearing
> low frequency beats at sub-1Hz is easy.. (anyone who has tuned an
> instrument by ear, or sat in a plane with poorly synchronized engines
> will know this)
>