In 1896, Henri Becquerel had inadvertently discovered radioactivity when he left some uranium ore in a drawer on top of an undeveloped photographic plate, on which the uranium left a "shadow."

1896年，贝克勒尔无意中发现了放射性物质，当他在一个抽屉里未显影的感光板上面留下一些铀矿后，感光板上留下了一个影子。

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A shadow moire method and its results for measurement of distortion of aluminium plate at exploding charge is presented. Possible errors are also estimated.

本文介绍了用阴影云纹法测量爆炸载荷下铝板变形的方法及结果，并进行了误差讨论和静态标定。

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In the midday, when the gnomon's shadow was cast over the stone plate, they could read the length of the shadow directly from the ruler.

正午时，表影投在石板上，古人就能直接读出表影的长度值。

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But shadow equalities minister Kate Green said she was "disturbed" by the ale's pump plate which featured "a nearly naked woman".

BBC: MPs call last orders for Top Totty