I enjoyed tonight's episode of the
Discovery program, Mythbusters, as I do every Sunday, but this
episode was especially interesting because of a segment on a physics
thought experiment called “Blow Your Own Sail”.
This is a very old thought experiment
for physics students. Suppose you are in a sailboat on a day with no
wind, and there is no motor onboard but there is a large fan. Can you
use the fan to blow the sail and propel yourself along?
According to Newtonian physics for
every acti...
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