This week, Max brought a multimeter and wire with him in order to begin electrical testing. He coiled a segment of the doughnut (the two halves held with basic tape for the moment) tightly with wire, hooked the ends to the voltmeter and started whipping the ball around within. We were pleased to find that voltage was generated (roughly 200-300 millivolts), but disappointed to see no value for current arise. Perhaps the value was too small to be picked up on the multimeter, but that will be our next step moving forward.
Allen continued to sift through the documents he had received and found another flaw in his earlier calculations, this time with the angular velocity. Originally, he had used Kinovea to use the point on his knee joint to generate values of angular velocity. However, this now seems to be inaccurate; rather than acquiring the angular velocity of the knee joint, what needs to be found is the angular velocity of the entire leg. Dr. Martin says this can be found by measuring the rate of change of the angle at which the leg moves. So, Allen re-recorded video snippets, this time placing green rather orange orange dots (the orange didn't provide enough contrast against his skin accompanied with the poor lighting in the gym) along the entire leg. He will continue to fidget with the angle tool in Kinovea in order to extract data to Excel like he had before in order to garner the correct yield for angular velocity.
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