Do bubbles keep your bath warmer for longer?
Do bubbles act like insulation on the surface of your bath? Will it prevent the need for that toe-burning hot water top up? Find out in this QotW! Plus, we ask how solar sails stay aloft on simple sunlight...
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I sometimes like a nice warm bath in the winter. After a while, the bath gets colder. I know there are a few ways that the bath can lose heat, but does a thick layer of bubbles on the top make any significant difference to the heat retention?