update seismograph

2016-05-12 11:55:10 -07:00 · 2016-05-12 11:55:10 -07:00 · d4a55bd53d
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 ## Science
 * [Charting](/lessons/charting), measure and chart acceleration
 * [Seismograph](/lessons/seismograph), create a seismograph with household items
 ## Advanced
 * [Prank WiFi](/lessons/prank-wifi), create fake WiFi to trick your friends
--- a/docs/lessons/seismograph6.png
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