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Log-linear representation of the root mean square acceleration output of the shaker system (dB re. 1 m s −2) as a function of input voltage (V) by frequency with a 6×6 array of wells in a 96 well plate filled with 400 μl water. Each line indicates a separate frequency tested. Note that a doubling of the input voltage resulted in a doubling of the measured acceleration (6 dB increase).
