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A normal sprinkler works by a pump pushing water out the nozzle. Wouldn't a time reversed sprinkler be a situation where water is flying into the sprinkler and
by ChadNauseam 3y ago
A normal sprinkler works by a pump pushing water out the nozzle. Wouldn't a time reversed sprinkler be a situation where water is flying into the sprinkler and depressing the pump? in that case I would expect the rotation to be reversed.
- Filligree 3y agoWell, yes. Isn’t that the situation the article is describing? Suction isn’t a real thing, so- Wait. Is this meant to imply it’s running underwater?
- ChadNauseam 3y agoYes, in the thought experiment it runs underwater. It's fine though because it can run underwater in both cases, so that doesn't ruin the symmetry. The article implies a situation where the pump is running in the opposite direction as normal, sucking the water in. That's not time-reversed though (eg in the time reversed version, the pump generates electricity instead of consuming it, because the water is pushing it instead of it pushing the water)