3 ms·
Not really related but regarding energy usage: I was fascinated when I travelled in Rathen (Germany) with a ferry that uses just the power of a stream: https://
by karussell 4y ago
Not really related but regarding energy usage: I was fascinated when I travelled in Rathen (Germany) with a ferry that uses just the power of a stream: https://en.wikipedia.org/wiki/Reaction_ferry https://en.wikipedia.org/wiki/Reaction_ferry
The German wikipedia entry has a small picture that shows how it works: https://de.wikipedia.org/wiki/Gierseilf%C3%A4hre https://de.wikipedia.org/wiki/Gierseilf%C3%A4hre
And the following technique seems to be even more convincing as the stream is never blocked from the cord: https://de.wikipedia.org/wiki/F%C3%A4hre#Rollf%C3%A4hre https://de.wikipedia.org/wiki/F%C3%A4hre#Rollf%C3%A4hre but probably more difficult for larger streams.