this post was submitted on 21 Jul 2026
622 points (98.6% liked)
Lemmy Shitpost
41047 readers
4313 users here now
Welcome to Lemmy Shitpost. Here you can shitpost to your hearts content.
Anything and everything goes. Memes, Jokes, Vents and Banter. Though we still have to comply with lemmy.world instance rules. So behave!
Rules:
1. Be Respectful
Refrain from using harmful language pertaining to a protected characteristic: e.g. race, gender, sexuality, disability or religion.
Refrain from being argumentative when responding or commenting to posts/replies. Personal attacks are not welcome here.
...
2. No Illegal Content
Content that violates the law. Any post/comment found to be in breach of common law will be removed and given to the authorities if required.
That means:
-No promoting violence/threats against any individuals
-No CSA content or Revenge Porn
-No sharing private/personal information (Doxxing)
...
3. No Spam
Posting the same post, no matter the intent is against the rules.
-If you have posted content, please refrain from re-posting said content within this community.
-Do not spam posts with intent to harass, annoy, bully, advertise, scam or harm this community.
-No posting Scams/Advertisements/Phishing Links/IP Grabbers
-No Bots, Bots will be banned from the community.
...
4. No Porn/Explicit
Content
-Do not post explicit content. Lemmy.World is not the instance for NSFW content.
-Do not post Gore or Shock Content.
...
5. No Enciting Harassment,
Brigading, Doxxing or Witch Hunts
-Do not Brigade other Communities
-No calls to action against other communities/users within Lemmy or outside of Lemmy.
-No Witch Hunts against users/communities.
-No content that harasses members within or outside of the community.
...
6. NSFW should be behind NSFW tags.
-Content that is NSFW should be behind NSFW tags.
-Content that might be distressing should be kept behind NSFW tags.
...
If you see content that is a breach of the rules, please flag and report the comment and a moderator will take action where they can.
Also check out:
Partnered Communities:
1.Memes
10.LinuxMemes (Linux themed memes)
Reach out to
All communities included on the sidebar are to be made in compliance with the instance rules. Striker
founded 3 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Its true there is a fan in the base of all bladeless fans, but the fan is smaller then traditional fan designs and moves the same if not more air then traditional fans.
Air is pulled in through the base and forced through a thin slit. This fast stream of air creates an area of low pressure, drawing in and amplifying surrounding air behind the slits.
Because air "sticks" to itself, when you get some air moving (by breathing out, for example), the initial bit of air that you move "drags" some air with it from beside and behind. This is what Dyson calls "air multiplier technology".
Dyson uses this property of air to claim that they only have to move a fraction of air (with the fan in the base) of all the air that blows past you.
Here is a example of how this works, and how you can use one breath to fill a large bag.
https://www.youtube.com/watch?v=rAAelB7nN14
Here is a image of the multiplier effect, from the original intake of air at the bottom. You can see the air is multiplied from behind and infront of the fan.
still a miss-labeling to call them bladeless fans, just because the blades are hidden. by that logic my beef raviolis are vegetarian (tbf: the catholic church made a similar claim during the medieval ages).
Bernoulli Fan is not only more accurate, it also sounds much cooler.
To play devil's advocate, there are no exposed blades at the point of use. I'd wager people who buy "bladeless" fans are more concerned with aesthetics and avoiding a crying toddler than they are with semantic accuracy. We call Wi-Fi "wireless" even though the router is plugged in.
I can stick my peepee into a bladeless fan and not worry about cuts so there's that.
well, no, see, you can't.
you can stick it through it. but you can't stick it in it.
You can't tell me what I can and can't do with my own peepee.
I hope you win some international competitions with this handle so announcer has to yell out "SATAN'S MAGGOTY CUM FART wins!"
there's a type of German meat dumplings called Herrgottsbescheißerle, which literally means "little things that bullshit the Lord" for the same reason
Oh my god that makes so much sense suddenly
Well, Beef comes from cows, and cows only eat vegetation, so beef raviolis are vegetarian. Now, I’m not a Rocket Biologist, but I think the math here is pretty conclusive.
Is this what a rocket biologist specializes in?
The cynic in me thinks "bladeless" makes them easier to sell in fan-death countries.
Pun intended, ofc 🤭
A traditional fan also pulls air from around its blades using the same principal. A bladeless is just a gimmick it has no actual benefits.
Here's a video on the subject:
https://www.youtube.com/watch?v=ySSo5PmZZJM
It turns out, a bladeless fan is even less efficient than a traditional one. It works better, when you remove the casing.
Toddler hands don't go through the protection of a classic fan, if it's built like after 1965.
Also we were not discussing esthetics but efficiency.
Of course they have benefits. Depending on the situation of course. I wouldn't put one in my computer, but I sure as shit have one in my home with a kid running around. Turns out a fan with all the heavy spinning hardware stuff in it's base is less likely to fall over than one with all that stuff up on top. Honestly all my Dyson stuff work fucking great for their intended purpose.
Paying the absolute minimal amount for something isn't necessary the goal of life. You're not a corporation.
Thank you.
Much like Sharper Image's Ionic Breeze, this is a very expensive bullshit tower, but I am seeing them everywhere lately. Box fans are fucking amazing. Get a box fan.
I did one better, I got myself a ceiling fan.
Ironically love Lemmy for the explainers you get on a shitpost. Only stumbled on this cause I was looking it up myself. Thanks for the write up :)
Keep in mind, that the explanation is wrong.
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.
It’s the same reason I use a beef bouillon cube in place of real meat when I feed my vegan friends. It’s much smaller so it doesn’t count.
My god, the sass - it’s magnificent.
Sir, this is a ~~Wendy’s~~ shitpost community.
And yet despite the fact that they're using less electricity and a smaller fan somehow the product costs five times as much as a normal fan. How does that work?
Partly because of the overall quality of the fan. Like you can go to Walmart and get a comparable bladeless fan for 49.99 but it's gonna be louder, won't be as efficient and won't last as long.
Smaller fans = more noise
And why isn't a regular fan getting the "surrounding air" to move too? Is there a subscription for that?
It's most probably dyson bullshit (the moved extra air is slowing the original air down, or it's magic) marketing.
Magnets!
I got one years ago when they still were a lot cheaper and I must say it's the best one I ever had. It's powerful and so quiet that I can leave it running next to my bed when it's hot.
Speaking of the dyson. IMO one of the worst fans out there: extremely weak (see measurements on YouTube), extremely loud and very fragile... Have one in the office, and I hate it...
A classic fan, fraction of the price performs better in all relevant categories...
Btw. They also create a "bigger" airflow around them so in that regard not better...
But all in all:
I've never really understood this multiplayer thing, sounds like a free energy gimmick. You can move more mass at the same speed without putting in more power.
You're basically trading energy to move higher volume of air. The fan can move smaller amount of air at higher speed, but larger amount at a gentle breeze feels nicer and helps with circulating the air in the room better.
You could achieve it by taking that exact motor and slapping a bigger fan onto it, but that looks less cool and probably produces more noise? Maybe there's some efficiency differences if the motor is better at spinning fast, but as a spherical cow in vacuum it should be similar.
It's cheaper to make electric motor spin fast with low torque than slow with high torque, a ceiling fan of the same cfm needs a bigger motor than a standing fan.
I would counter that a small fan spinning at high rpm makes more (annoying) noise than a large fan spinning at a lower rpm.
So it's like a lever, you aren't just magically getting more volume at the same speed without more power, it just slows down when interacting with the outside air, ie conservation of momentum
Basically they're trying to claim that the Bernoulli principle is some amazing concept that only they've come up with.
Their fans do work in the sense they do move more air but it creates so much back pressure that most of that air movement is lost. So you might as well not bother.