Performance Task: Give a five (5) sentence summary of the First Clocks.
FIRST CLOCK
Sundials are the first time measuring devices known to man. Created originally in babylon over six thousand years ago, and developed into more functional state in
Ancient Egypt, sundials became extremely useful analogue clock device the remained
in continual use for many thousands of years after, even managing to survive until
today. The true beginning of sundial popularity in Egypt started with the creation of
first obelisks – the tall and slim stone structure whose shadow enabled easy reading of
time from circular segmented horizontal disc that was placed on the ground around it.
Sundials became obsolete for governments and commerce industry that was in mid-
1800s.
With such powerful tool, Egyptians discovered longest and shortest days, the
exact point of "midday," and the reason why they were able to introduce the 10-hour
daylight system. Sundials eventually reached the Greek and Roman empires where they
were welcomed and improved dramatically, enabling the creation of much smaller and
portable sundials. Because of their precision and reliability in sunny weather, sundials
remained in use even while Europe was going through the innovative phase of
developing mechanical clocks. When those mechanical clocks finally provided accurate
measurements of time, only then did
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