shenzhen, china - eratosthenes measure on sept 2013
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Grace s report from china sep 21st, 2013
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Grace’s report from China_ Sep 21st, 2013
Caught the time, for typhoon hit the area from 22nd Sep
After measurement, it’s cloudy
Designed a special tool for measurement, but couldn’t find at the store
Found another substitution from recycling
Windy and cloudy all the day
A real challenge
Waited the shortest sun shadow
After measurement, drew the diagram at homeConfused…
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