Colbeck S C
U.S. Army Cold Regions Research and Engineering Laboratory, Hanover, NH 03755-1290.
Med Sci Sports Exerc. 1995 Jan;27(1):136-41.
Ski charging was measured using giant-slalom style skis as gliding capacitors. The voltage measured across the plates was proportional to the charge on the base. While resting on dry snow or suspended in the air, the voltage was slowly reduced by the data logger itself. On wet snow the decay was much faster. While stationary on powder snow the ski developed a slightly negative voltage, showed a small, transient positive peak when motion began, rapidly dropped to negative values, and then assumed a quasi-steady climb to positive voltages. A great deal of noise was superimposed on the general features of the signal when skiing on hard or bumpy surfaces. Thus, the accumulation of charge to high levels was only possible with long runs in deep powder. The rate of charging increased with speed but was not affected by use of one "antistatic" wax, and another such wax actually increased the measured voltage over that of an unwaxed base.
使用大回转式滑雪板作为滑动电容器来测量滑雪板充电情况。极板间测得的电压与底部的电荷量成正比。当放置在干雪上或悬浮在空中时，数据记录器自身会使电压缓慢降低。在湿雪上，电压衰减要快得多。当静止在粉雪上时，滑雪板会产生轻微的负电压，运动开始时会出现一个小的、短暂的正峰值，然后迅速降至负值，接着呈现出准稳态上升至正电压。在坚硬或颠簸表面滑雪时，信号的总体特征上叠加了大量噪声。因此，只有在深厚粉雪中长距离滑行才有可能将电荷积累到高水平。充电速率随速度增加，但不受一种“抗静电”蜡的使用影响，而另一种这样的蜡实际上使测得的电压比未打蜡的底部更高。
