Source: www.pocket-lint.com
So, you’ve read about the Dyson Air Multiplier, and you’ve looked at the photos, but you’re still baffled about how the damn thing works. You’ve seen vague promises of “Engineering” being responsible (which we’ve come under criticism for, for some reason), but here’s – in gory physics-y detail – roughly what’s going on inside Dyson’s mysterious new bladeless fan.
The Air Multiplier uses friction in the air to push out its cool breeze. Around the rim of the circular fan is a little opening from which jets a very thin (1mm or so) stream of air at 55 mph. That thin stream of air pulls more air into the stream thanks to the aforementioned friction – Physicists call this process entrainment.
via How Dyson’s Air Multiplier works – Pocket-lint.
