4 ms·
I don’t think you can move a lot of air silently, the turbulent layer between the flow and the still air produces noise. This is only silent because of size. Ma
by nraynaud 8y ago
I don’t think you can move a lot of air silently, the turbulent layer between the flow and the still air produces noise. This is only silent because of size. Maybe less noisy than a fan or prop, but not silent.
- onemoresoop 8y agocorrent, but it would still be "silent-er"
- grondilu 8y agoBirds can be fairly silent.