2. When conducting projected to illuminate the photodiode, and gradually adjust the distance between the torch with
.A photodiode to increase the brightness of the light incident on a photodiode. It appears that the motors and wheels do can work normally. The series of stories of muscular and bake dry cabinet rubber sheet. Stretch out until the switch magnetic 2 touch each other. The motor and the wheel to stop working.And measure the brightness of incident photodiode
.While the series circuit switch light started working, such data table 6
.
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