Posted
on August 19, 2014
Tick,
tock, a wooden block.
Tick,
tock, make a clock!
Today's
birthday was an American carpenter who built houses and barns...but
then a fellow named Eli Terry convinced him to get into the
clock-making business.

I
have always thought of gears being made of metal!
In
1812 Thomas left Terry and started a clock-making business on his
own. His factory was one of the first to mass-produce clocks – and
he made them with brass movements (gears). His shelf and mantel
clocks were particularly popular with people.

- Find out how gears work.
- Find out how pendulum clocks work.
- Find out about modern atomic clocks.
- Find out about mass-production techniques.
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on this date:
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