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Asked by Mr.Au-Yeung from Hong Kong SAR | Dec. 28, 2008 03:59
About:Western Han

what is a seismograph?

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Answered by Ms.Rosalyn from USA | Jan. 06, 2009 23:41
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It is something that records an earthquake and tells you the magnitude and epicenter.
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Answered by Ms.Ollsen from Ukraine | Mar. 21, 2011 05:09
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By th eway invented in China but also in France. But China had it invented like 1000 yers ago. China has soooo many good/awsom inventions. Always research !
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