Aerosol formed via toilet flush

Someone mentioned they wanted to see the aerosol plume from a toilet flush over in this video: http://videosift.com/video/Schlieren-Optics-Making-the-invisible-visable. I couldn't find a Schlieren version, but this is pretty close.
siftbotsays...

Self promoting this video and sending it back into the queue for one more try; last queued Tuesday, November 25th, 2014 5:51pm PST - promote requested by original submitter Mordhaus.

newtboysays...

I think it's a bad example, since if you put dry ice in water it skitters, splashes, and boils, but pee doesn't do that. (At least mine doesn't) But good try finding the Schlieren Optics one.

newtboysays...

It worked to give a visible aerosol, I'm just thinking it makes more than you would normally create, which I'm sure was intentional. You have to have more so you can see it if you don't have a Schlieren setup. That's what I want to see, in slow motion and HD so you can see the droplets along with the air currents. Then I'll have to design a negative pressure toilet or I'll never feel like using the bathroom again!

It reminds me of a good lesson I learned with fish. It's a good idea to not learn too much about something you use habitually, it can cause real problems! Sometimes it's better to just not know. ;-)

Mordhaussaid:

Beats me, I figure if a scientist from MIT does it with dry ice it's for a reason.

newtboysays...

Oh...looking closely I see this was likely part of a commercial for the toilet lid, which is the kind with a small fan and (I hope) filter to make a negative pressure toilet (if you close the lid before flushing). That would be a great reason to make it look worse than it is, more spray means more sales.

Mordhaussaid:

Beats me, I figure if a scientist from MIT does it with dry ice it's for a reason.

speechlesssays...

What kind of caveman even uses a toilet these days? I don't know about you, but I have other things to do. Just stomp your shit down the drain while you shower in the morning like a normal person.

newtboysays...

I found it inconvenient to go both number one and number two, often not even at the same time, so I had a cloaca installed and now I just go number three!

speechlesssaid:

What kind of caveman even uses a toilet these days? I don't know about you, but I have other things to do. Just stomp your shit down the drain while you shower in the morning like a normal person.

TheFreaksays...

The video I remember from a few years back showed optical effects from several devices and the toilet stood out in my memory because of the sheer range of the air disturbance.

I've looked all over and can't locate the video.

newtboysays...

I also recall seeing that somewhere, I think it was on TV but I'm not sure.

TheFreaksaid:

The video I remember from a few years back showed optical effects from several devices and the toilet stood out in my memory because of the sheer range of the air disturbance.

I've looked all over and can't locate the video.

Mammaltronsays...

I think Mythbusters looked at this issue in the context of toothbrushes residing within a few metres of the toilet.

The upshot was yes, you're literally getting shit on your toothbrush, but not very much.

nanrodsays...

If I was going to worry about toilet aerosols it wouldn't be in my own bathroom where my toothbrush might get contaminated with a barely detectable sample of my own shit. I'd worry about breathing the air in the men's room at my local football stadium where there are 30 urinals and 20 toilets all being used by guys who have been stuffing their faces with chili dogs and nachos and drinking way too much beer.

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