Re: Marble Clock

["John B. Matthews" <nospam@nospam.invalid>]

In article <7075541f-01b7-4cd4-997f-b0b8048f067d@googlegroups.com>,
 gattamaneni abhiram <abhiram.gattamaneni@gmail.com> wrote:

> A marble clock is a clock that indicates the current time in a 
> 24-hour day using marbles to represent portions of the hour and 
> day. There are many different kinds of marble clocks, 
> distinguished by variations in the way the marbles represent 
> portions of the day. Our marble clock consists of five shallow 
> "trays" arranged one above the other. The bottom tray (the fifth 
> tray) serves as a marble "reservoir." Every minute, a winding 
> mechanism picks up one marble from the bottom tray, carries it to 
> the top of the clock and drops it into the top tray of the clock. 
> As a tray fills up, marbles fall through to lower level trays, as 
> described below. The current state of the marbles in the upper 
> four trays tells the current time.

For reference, an elapsed-time video of a three-tier version is 
seen here:

<http://www.scientificsonline.com/time-machine-ball-bearing-click.html>

-- 
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>