3 points

Omg, my wife and I were looking at air purifiers a couple months ago and I had this exact meltdown.

permalink
report
reply
7 points
*

Obviously it works up to minus and plus infinity on one of the axes, possibly the Z-axis, though that’s not guaranteed (maybe it’s a longitudinal or latitudinal moisture remover?)

permalink
report
reply
3 points

Nah, it’s the surface area of the extent of the effect. (For greatest volume affected, suspend the device such that its effect can reach, unimpeded, a sphere with that surface area.) Dunno how the physics works; something-something Gauss’s law, I imagine.

permalink
report
parent
reply
3 points
*

That’s actually a proper non-joky perfectly valid and scientific way to justify listing a covered area in square meters rather than volume.

I doubt that’s the actual geometry they used and the surface whose area they list, but none the less it’s still well spotted.

permalink
report
parent
reply
14 points

Let’s just say every device advertising it could work on X meters (square, cubic, whatever) is a lie.

What are the conditions? How pronounced you expect your result to be?

This is especially funny with heaters, for example, when heaters of the same power advertise vastly different area of effect and people go “Oh! This 1500W heater can heat up 50 square meters, so much better than this 2000W heater advertised for 30 square meters!”

permalink
report
reply
11 points

So I would be best installing it at my nose height?

permalink
report
reply
3 points

For best results buy one per family member per floor. Actually better get two so you can have one at seated height too.

permalink
report
parent
reply
2 points

Nah the air isn’t constrained to the plane so most of it should pass through eventually and get purified, maybe use some fans to speed it up if needed.

permalink
report
parent
reply
110 points
*

… People would be more likely to know the area of their home/floors vs the total volume…

When’s the last time you saw a real estate ad with cubic inches/feet/meters on it?

This makes perfect sense.

permalink
report
reply
23 points

Well yeah but it’s still funny when thought of in the way the caption says

permalink
report
parent
reply
4 points

They assume 8-9ft ceilings.

permalink
report
parent
reply
13 points
*

Wrong. People assume metric ceilings. The area in question is also measured in metric.

permalink
report
parent
reply
3 points

Yeah, OP fundamentally misunderstanding. Also see: Specs of every wireless router.

permalink
report
parent
reply
3 points
*

A router would be different though. It would keep the same radius regardless of building geometry as it’s signal degrades with physical distance from its antenna.

A dehumidifier works by running air through it and removing moisture then exhausting the now dry air out. The dry air would then intermix back into the room’s air, lowering it’s total humidity level. It may take a little more time based on the turbidity of the rooms air, but a dehumidifier would have the capacity to dry a .25x20x24m the same as a 3x5x8m room as both contain the same amount of air in their 120m³.

Edit: added units

permalink
report
parent
reply

Science Memes

!science_memes@mander.xyz

Create post

Welcome to c/science_memes @ Mander.xyz!

A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.



Rules

  1. Don’t throw mud. Behave like an intellectual and remember the human.
  2. Keep it rooted (on topic).
  3. No spam.
  4. Infographics welcome, get schooled.


Research Committee

Other Mander Communities

Science and Research

Biology and Life Sciences

Physical Sciences

Humanities and Social Sciences

Practical and Applied Sciences

Memes

Miscellaneous

Community stats

  • 12K

    Monthly active users

  • 2.8K

    Posts

  • 68K

    Comments