内容:球停留集中在探测器!,interruption in the light beam, and the " reference " detector measures the background light.这个装置使用两个探测器,:在“ 信号 ”探测器寻找一个光束中断的光,“ 参考 ”探测器措施的背景光。,The use of two detectors is my small contribution to advance the art of levitation.该探测器使用两种是我小的贡献,推动磁悬浮艺术,Testing the reference detector测试参考探测器 Adjusting the sensing resistor for the reference detector调整感应电阻器的参考探测器