MECHANICAL CLOCK

INVENTOR

• I-Hsing
• Monk
• Mathematician

Untitled Slide

HISTORY

• Invented in 723 A.D.
• First one was 30 feet tall
• Powered by water
• Astronomical clock
• Built from bronze and iron
• Musical clock (puppets)
• 1st one ran for 36 years

IMPORTANCE

• Then: they could now tell time without sundial
• Now: still tell time with clocks
• Never been without clocks to tell time

IMPACT

• Without clocks we'd tell time by the sky
• Late or early for things
• Couldn't time precisely
• Train systems & flights= unorganized

CHANGES

• Ran by water now by batteries
• Now digital clocks
• All different sizes (smaller)
• Set time manually
• Not astronomical
• More precise times
• Everyone has them now

PERSPECTIVE CHANGED

• Smarter than expected
• Thankful
• Respect

WORK CITED

• http://www.vendian.org/guests/invent/max2.htm
• http://www.uh.edu/engines/epi1506.htm
• http://www.china.org.cn/top10/2011-03/04/content_22054243_2.htm
• http://historyworld.net/wrldhis/PlainTextHistoriesResponsive.asp?historyid=...