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在去年11月号的物理通报上,我曾以“对于阿特武德机的改进意见”为标题,提出在阿特武德机上增设落距指示装置的建议。虽然这个建议对落下距离的测定有了某种程度的提高,但还存有以下两方面的主要缺点: 1.没有提到如何应用于验证速度定律。 2.电流计指针的摆动在接触情况不够良好时不可靠。因为是以游码落于中平台上之瞬时和摆尖与水银面接触之瞬时的重合作为判断中平台位置的标准,这样游码与导体接触的良好与否就限制了电流计指针摆动的可靠性。香烟盒内的锡纸是我当时找到的效果最好的接触用导体,但遇有以下情况时,指针的摆动仍然不能达到完全可靠,
In the November issue of the Physical Communications, I proposed the proposal to add a fall-distance indicating device to the Atvod machine under the heading “Improvement of the Atvodk machine”. Although this recommendation has somewhat improved the measurement of fall distance, there are two major drawbacks: 1. There is no mention of how to apply the law of proof speed. 2. The galvanometer pointer is not reliable when the contact condition is not good enough. Because it is based on the instantaneous coincidence of the travel code on the platform and the coincidence of instantaneity of contact with mercury surface as the criterion for determining the position of the platform, the good contact between the tour code and the conductor limits the reliable swinging of the galvanometer pointer Sex. The tinfoil in the cigarette box was the best contact conductor I had found at the time, but when the following conditions were met, the wiggling of the pointer was still not completely reliable,