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| совершенно случайно (Quite accidentally we found out, that the effect only occurred when we put a light source in a very special position towards the observer and the falling drop. Andrey Truhachev) | |||
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| совершенно случайно (Quite accidentally we found out, that the effect only occurred when we put a light source in a very special position towards the observer and the falling drop. Andrey Truhachev) | |||