Less Dense Water is less dense when solid than when liquid. However, there are several other substances that share this peculiarity: bismuth,...
Feathering Feathering: to turn (an oar blade) almost horizontal when lifting from the water at the end of a stroke to reduce air resistance b (1) :...
To block a magnetic field... It is necessary to redirect the magnetic flux lines, usually using ferric substances. So if you put a magnet inside an...
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