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Cake day: August 18th, 2023

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  • Yes. It’s not necessarily the size that makes the noise, but rather the rpm required of the smaller fans to move an equivalent amount of air. I have a fan in my phone, for instance. It is so small that it spins at 23,000 rpm to make just a small amount of air movement I can barely feel, but easily hear. My ceiling fan can’t be heard at all but still moves WAY more air while spinning at a couple hundred rpm. The air turbulence from blade speed is most of what you hear from a fan.


  • It’s just some standard fluid dynamics. It uses “Bernoulli’s Principle” and the “Coanda Effect”.

    You can look up those, or probably look up those along with “dyson bladeless fan” to find a more direct explanation. The gist of it is that the ring of moving air causes a pressure drop inside and behind the opening that causes the air from further behind the ring to rush into the low pressure area and get pulled along through it.




  • ColeSloth@discuss.tchncs.detoLemmy Shitpost@lemmy.worldthe trojan fan
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    16 days ago

    It’s also just Dyson’s completely overpriced bullshit. It makes weak air flow and has no real benefit for use as a fan.

    Project Farm has tested them a couple different times. They’re expensive aesthetic toys.

    *Edit: While I’m on a bit of a Dyson rant; I’d just like to also say that I HATE their hand dryers that some places bathrooms use.