“反重力”帆船漂浮在水面之下

小物體在漂浮的水層兩側浮動

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在這張數字化著色的影像中,兩艘小帆船中的一艘漂浮在藍色水層的底部。研究人員在容器中注入粘性液體,並以高頻率劇烈振動。快速振動導致液體在容器內“懸浮”。穩定的氣泡位於其下方。科學家們發現,在那裡,小物體(質量高達7克,長度或直徑為2.5釐米)可以在水層的底部漂浮,看起來是倒置的。他們推測,這種“反重力”效應是由快速振動在容器內形成的波動重力產生的。

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Andrea Gawrylewski is chief newsletter editor at 大眾科學. She writes the daily Today in Science newsletter and oversees all other newsletters at the magazine. In addition, she manages all special collector's editions and in the past was the editor for 大眾科學 Mind, 大眾科學 Space & Physics and 大眾科學 Health & Medicine. Gawrylewski got her start in journalism at the Scientist magazine, where she was a features writer and editor for "hot" research papers in the life sciences. She spent more than six years in educational publishing, editing books for higher education in biology, environmental science and nutrition. She holds a master's degree in earth science and a master's degree in journalism, both from Columbia University, home of the Pulitzer Prize.

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