Lava lamp

collections: Science
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Posted 31 July 2013
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Duration of the video: 4 Min. 45 sec.
Description
This video explains the working principle of a lava lamp. The narrator speaks quite clearly and at moderate pace, which will help beginners better comprehend his speech.
Recommended words
to agitate - 煽る
a buoyancy - 浮力
to float - 浮く
a surface - 表面