2 ms·
Note that the problem the paper is about is that in real life, using precision instruments, the Feynman's sprinkler does rotate the other way under suction. Th
by GuB-42 3y ago
Note that the problem the paper is about is that in real life, using precision instruments, the Feynman's sprinkler does rotate the other way under suction.
The counterintuitive asymmetry between blowing and sucking is already well understood.
- eig 3y agoYou can interact with a working demonstration booth of this at MIT. That apparatus had an initial backwards torque when you turned on the suction, but no constant torque pushing it the other way once everything hit steady state. I wonder why these authors seem to have gotten a different result...