If you took high school chemistry, then you undoubtedly recall the bizarre drawings of the "orbitals" that describe where in an atom or a molecule an electron is likely to be found.

“如果你曾上过的高中化学课，那么毫无疑问你能记起这些奇特的“轨道”图片，它描绘了一个分子或者原子的电子可能被发现的位置。”

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The process reverses electrolysis, which many may recall from a high school experiment that involved placing two electrodes in water, passing an electric current through them and collecting the hydrogen and oxygen that bubbled off.

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