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首页> 外文期刊>American journal of physics >Studying collisions in the general physics laboratory with quadrature light emitting diode sensors
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Studying collisions in the general physics laboratory with quadrature light emitting diode sensors

机译：使用正交发光二极管传感器在普通物理实验室中研究碰撞

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摘要

We have developed the means to measure position rapidly and precisely as a function of time in the general physics laboratory. These measurements are of sufficient quality that velocities and accelerations can be calculated from the position data using numerical derivatives. The precision of the measurements is such that any disagreement between theoretical expectations and experimental measurements is less than a few percent. Measurements of the system under study can be made as rapidly as every 200 As, which is faster than the typical time scales over which the system changes. Measuring rapidly also allows one to investigate additional phenomena not previously accessible and to see features of the physics previously unobserved. The measurement system is based on commercially available sensors, computer hardware, and computer software (LABVIEW(TM)). Many general physics laboratories based on this system have been developed but only an investigation of Newton's second law will be described here. (C) 2002 American Association of Physics Teachers. [References: 21]
机译：我们已经开发了一种在普通物理实验室中根据时间快速准确地测量位置的方法。这些测量具有足够的质量，可以使用数值导数从位置数据计算出速度和加速度。测量的精度使得理论预期值与实验测量值之间的任何差异都小于百分之几。所研究系统的测量速度可以达到每200 As一次，这比系统更改的典型时间范围要快。快速测量还可以调查以前无法访问的其他现象，并可以查看以前未观察到的物理特征。该测量系统基于市售的传感器，计算机硬件和计算机软件（LABVIEW™）。已经开发了许多基于该系统的普通物理实验室，但是这里仅描述对牛顿第二定律的研究。 （C）2002年美国物理教师协会。 [参考：21]

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