Bladeless wonder

Bladeless wonder

Electric fans haven’t changed much since they were invented in 1882—blades slicing through the air to push it forward. When the engineers at Dyson first began working on a fan without blades, they started with pressurized air, forcing it through narrow apertures to create jets.But a breakthrough came when they noticed that accelerating air over a ramp amplified it 10-20 times.

Also See |Bladless Wonder (PDF)

Photographs: Priyanka Parashar/Mint

neil.r@livemint.com

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