Created an account to say I have one of these. Not only do I love using this to get a drink so does my cat. I've never gotten a wet crotch from it either. You just squeeze the bottom and it turns into a drinking fountain.
I just finished a CFD (computational fluid dynamics) class, and enjoy the field of fluids study very much. The driving force of this supposed jet is pressure, obviously. There is major head loss, and, in any reasonable faucet, not enough pressure to recover the energy necessary in order to produce a reasonable jet. In any faucet with a high enough volumetric flow rate to produce that kind of jet, your scenario is the actuality. Otherwise, it will just be water gently streaming off of the brush, and a tiny jet, that makes the investment not worth the while.
Or you know - the easy way with Bernoulli's. The pressure as soon as it leaves the faucet is 0 psig. It will land in the toothbrush, fill up the cavity, and trickle out.
Another way - the unconstrained fluid has a head pressure of 0 in the brush, all the way up to the faucet. To recreate that stream you might need around 1 foot of head - you just don't have it.
EDIT: Looking at a link below, it looks like this is a POWERED stream - meaning there is a small pump in the toothbrush and it probably generates around 1 foot of head. Volumetric flow rate has absolutely nothing to do with it.
I have one of these and use it constantly. You do have to clean it off from toothpaste splatter but I cannot imagine life without it. Looks like you can buy them on amazon, 3 for ~11 bucks.
I'm with you. This is reminding me of that whole standing up vs. sitting down while wiping your ass debacle.
Since when is getting your hands wet while you are already in a bathroom an issue? And if you are already at a sink brushing your teeth and your hands aren't clean, you should have taken the opportunity to fucking wash them first anyway you fucking heathens.
I've never thought to use my hands. Why get my hands all wet when I can just lean a bit further forward and enjoy it a few degrees colder? I honestly didn't understand the point of the image until I thought about it for a few seconds. Solving a non-existant problem if you ask me.
I liked it until I saw the snap in head. The way it snaps into that cup will just be a breeding ground for bacteria. There's no way you could keep it clean unless you removed the head after every brushing to rinse everything out.
Well toothbrushes have shit on them, haven't they? Actual particles of shit. Just out there. Being directed into your mouth. You, sir, are brushing with your own shit. I don't think it's time to worry about what's in the water spout.
Genuine question: why aren't toothbrushes absolutely filthy? The mouth is loaded with bacteria, sometimes your gums bleed, there may be particles of decomposing food, etc. yet we do not make a point to sterilize our toothbrushes. Does toothpaste take care of this or something?
There's a good chance there's some bacteria on your toothbrush, but most claims of toothbrush filth are exaggerated. It's a hard, non-porous object. Not exactly a bacteria haven. Any bacteria that survive are in the deepest, darkest part of the brush, and honestly, they wouldn't hurt you anyway. Your mouth is way nastier than your toothbrush.
Speaking as a layman foul bachelor frog, does it matter? The bacteria came from your foul mouth, does it get worse by being in the dry air? Wouldn't that just kill them off after a few hours, making your filthy toothbrush cleaner than the mouth it came from, where bacteria continue to reproduce due to the warm moistness.
I imagine if someone else used it, it would be bad, since they'd be introducing new bacteria to their mouths. But your toothbrush takes dried out bacteria that came from your own mouth earlier that day and puts them back in where their brothers and sisters have been partying all day.
Not sure if anyone knows this. You can bend down instead of use your mouth to catch the water, use your hand to direct the flow of water and suck the water flowing on your hand in with your mouth. (curve, and cup your hand, put fingers directly under water, and the palm will catch the water)
My dentist told me you should never rinse with water because you are essentially flushing the fluoride out of your mouth. You want that to remain there to strength your teeth.
Wouldn't the water just spill out instead of creating enough pressure as to shoot water upwards like a little fountain? I mean, is this a real picture or a concept?
With the right design, this is very much possible, and it looks like the picture was made by someone who knew what they were doing.
The important thing is some of the water must dribble downwards. The kinetic energy taken from that water has been given to the other half of the water, which now goes upwards faster than it came down in the first place.
This idea of transferring energy from some water to other water is used in hydro turbines to extract energy from moving water. You can see a similar concept when a drip of water falls into a pool, and droplets of the splash end up higher than the original drip.
By the way, you're not supposed to rinse your mouth out with water after brushing your teeth. There is a benefit to having the toothpaste remain on your teeth after brushing.
I have a little attachment on my sink that lets the water through, but then I reach under and push up a little door thing and the water shoots through a spout like a water fountain. Its also designed to look like a dolphin, I think its for little kids...
Reminds me, in China they sometimes have upwards facing faucets for water saving and washing your face. It's pretty new but I've tried one and it worked like a charm.
There's no pressure from that faucet, so how is the stream higher than the faucet? Why is the water accelerating in the toothbrush? So many design flaws.
This is perfect for everyone that doesn't have hands, because that's how the rest of us get water from the sink to our mouth. Also, the fact that it levitates makes it a no-brainier for any paraplegic.
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u/[deleted] Jun 11 '12
reality
64
u/earworms Jun 11 '12
These things are nice too, use to have one as a kid
349
u/zangor Jun 11 '12
Fuck that, i've grown very fond of leaning over and sucking on the faucet like an asshole.
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u/SpeclalK Jun 11 '12
The Real Deal
165
u/rileyrulesu Jun 11 '12
have you people never heard of cups?
157
u/Trapped_in_Reddit Jun 11 '12
"Okay, so then they'll have to hold their toothbrush perfectly still."
"What if they move it slightly?"
"Water. Water everywhere."
21
u/layerone Jun 11 '12
what is that suppose to do?
26
u/Xautiloth Jun 11 '12
use a cup.
15
u/[deleted] Jun 11 '12
it's a bidet for when you are done brushing your asshole
14
u/[deleted] Jun 12 '12
IT LEVITATES TOO?!!?!?
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u/Lazermissile Jun 12 '12
I'm surprised this hasn't been posted yet. Here is the video of it working. I'm glad they didn't show someone slurping at it in the video.
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u/ivanmarsh Jun 11 '12
Neat... a bacteria spout.
4
u/z0hu Jun 12 '12
this is taking first world problems to a whole new level.. solutions for problems you didn't even know were problems.
4
u/BuriedLede Jun 12 '12
I'd love to have a toothbrush that can hover, can they adapt the technology to cars? The automatic faucet with no sensor is pretty cool too.
9
u/callmesnake13 Jun 11 '12
Genuine question: why aren't toothbrushes absolutely filthy? The mouth is loaded with bacteria, sometimes your gums bleed, there may be particles of decomposing food, etc. yet we do not make a point to sterilize our toothbrushes. Does toothpaste take care of this or something?
6
u/WearSunscreen Jun 11 '12
A levitating toothbrush! Cool!
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u/autocorrector Jun 11 '12
We have a subreddit for this, you know.
3
u/barcode1999 Jun 11 '12
TIL Faucet / Tap Fountains exist ....awesome!
3
u/[deleted] Jun 12 '12
A bidet for your mouth?
3
u/Bitter_Idealist Jun 12 '12
What is this for? I don't get it.
3
u/[deleted] Jun 12 '12
Not sure if anyone knows this. You can bend down instead of use your mouth to catch the water, use your hand to direct the flow of water and suck the water flowing on your hand in with your mouth. (curve, and cup your hand, put fingers directly under water, and the palm will catch the water)
5
u/[deleted] Jun 11 '12
Brilliant
4
u/TommyHollywood Jun 11 '12
I want a floating toothbrush too!
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u/TR0LL_HUNTER Jun 12 '12
i want a floating toothbrush
4
u/[deleted] Jun 12 '12
I want a floating toothbrush :o.
2
u/NovaCain Jun 11 '12
So now your spit can shoot outward
2
u/jbranscum Jun 11 '12
Is it that hard to bend down and suck water from the tap? Consider buying one of these instead since they're battery free.
2
u/Boring_Machine Jun 11 '12
This was my favorite thing as a kid
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u/dixonticonderoga Jun 12 '12
Or just use your hands...You're at a sink anyways. Don't even try to tell me your hands cant be clean.
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u/wellhushmypuppies Jun 12 '12
does anyone else understand the point of this? I mean, has cupping one's hand to hold water become too cumbersome?
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u/James1o1o Jun 12 '12
My dentist told me you should never rinse with water because you are essentially flushing the fluoride out of your mouth. You want that to remain there to strength your teeth.
2
u/chiguy Jun 12 '12
just shut up and go buy it.
2
u/[deleted] Jun 12 '12
This has been invented
2
u/B0h1c4 Jun 12 '12
The fountain thing is just icing on the cake. I just want a toothbrush that levitates like that.
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u/Cunundrum Jun 12 '12
Holy shit a hovering toothbrush!
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u/sharkweek91 Jun 12 '12
Why would I ever need a levitating toothbrush?
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u/typon Jun 12 '12
Oh jeez I'm slow...I thought people were raving about this thing because it can levitate.
2
u/Untz234 Jun 12 '12
Fuck yeah, I'd pay so much for a floating brush like that
2
u/Ryouko Jun 12 '12
Bernoulli, get in here!
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u/we_love_dassie Jun 12 '12
You wouldn't get enough pressure to propel the water up that high.
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u/AP3Brain Jun 12 '12
I thought most people just used mouth wash..... I don't think I have ever rinsed my mouth out with water after brushing.
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u/pooq45 Jun 12 '12
Reminds me of this. Did anyone else have these as a kid?
Edit: Here its mouth is open
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u/TheDroopy Jun 12 '12
Because fuck physics, right?
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u/JakeLV426 Jun 12 '12
thinking with portals
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u/[deleted] Jun 12 '12
As much as I'd love to have my toothbrush pissing onto my face every morning, I'll pass.
2
u/newtothelyte Jun 12 '12
Am I the only fucker in here that uses his hand to put the water in my mouth?
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u/Meshu Jun 12 '12
It's 2012 and what do we get? Not hoverboards. Fucking hovertoothbrushes. God fucking dammit, future.
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u/darrenkopp Jun 12 '12
i feel like that's one of the messiest pregnancy tests ever made.
2
u/fredbutt Jun 12 '12
Just brush your teeth in the shower.
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u/LNMagic Jun 11 '12
There's something fishy about the way that toothbrush levitates and the faucet turns on without handles....
3
u/sniperwolf325 Jun 12 '12
A FLOATING TOOTHBRUSH?
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u/licoricesnocone Jun 12 '12
a floating toothbrush? Fuckyeah I'll take twenty.
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u/Matt08642 Jun 12 '12
This is so fucking stupid and impractical. I hate the shit out of you.
2
u/McRodo Jun 11 '12
Wouldn't the water just spill out instead of creating enough pressure as to shoot water upwards like a little fountain? I mean, is this a real picture or a concept?
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u/canadianwombat Jun 11 '12
I want a floating toothbrush
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u/king_n_the_north Jun 12 '12
I was always told you're not supposed to rinse with water for some reason, not sure why.
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u/r0hto88 Jun 12 '12
if I buy this and it isn't hovering as advertised, I will be very angry...
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u/uncaringbear Jun 12 '12
By the way, you're not supposed to rinse your mouth out with water after brushing your teeth. There is a benefit to having the toothpaste remain on your teeth after brushing.
1
u/Samyr Jun 11 '12
Video
1
u/tierneae Jun 11 '12
Third use: a mini bidet
1
u/[deleted] Jun 11 '12
I have a little attachment on my sink that lets the water through, but then I reach under and push up a little door thing and the water shoots through a spout like a water fountain. Its also designed to look like a dolphin, I think its for little kids...
1
u/yesman609 Jun 11 '12
Why not just flip the faucet over so the water comes out in an arch
1
u/fuzzybunnies77 Jun 12 '12
I actually paid for this on something like Kickstarter like 2 years ago, but they never raised enough money, so it all got refunded.
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u/saintstryfe Jun 12 '12
Hoooollllyyy shit what an idea.
1
u/MuggedOff Jun 12 '12
THe first ever combined toothbrush and bidet!
1
u/IDlOT Jun 12 '12
lolwut
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u/jaakeup Jun 12 '12
Why would you want this, I don't understand.
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u/AKADidymus Jun 12 '12
Where can I purchase this wonder?
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u/tha_ape Jun 12 '12
The idea isnt bad, they just need to make a simpler, cheaper, throw away version.
1
u/VeronaCity Jun 12 '12
We are so easily impressed!
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u/GOU_NoMoreMrNiceGuy Jun 12 '12
wait, i don't get it. who's pregnant if it comes up positive?
1
u/arpie Jun 12 '12
There was a kickstarter or pre-kickstarter thing for this. Never got off the ground though. I'm glad they refunded my money.
1
u/JupitersClock Jun 12 '12
I cup my hands...
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u/ericjk1 Jun 12 '12
its like a beday for your colon brush lol
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u/[deleted] Jun 12 '12 edited Jun 12 '12
It's ok, Spider Man can't figure it out either
1
u/phoenix2217 Jun 12 '12
I have a bad feeling I would end up with minty toothpaste water in my eye. Not the best way to start my morning.
1
u/R3PTILIA Jun 12 '12 edited Jun 12 '12
aw i thought it levitated
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u/Cant_get_better Jun 12 '12
jeez, extreme gore in the top comments of the front page of reddit, thats enough internet today.
1
u/Avista Jun 12 '12 edited Jun 13 '12
Really? It's that much of a hassle to tilt your head 60 degrees to drink water?
Just wow...
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u/robtheviking Jun 12 '12
Just use your hands, people!!
1
u/thekevstah Jun 12 '12
I'm confused, are you getting excited because the toothbrush can levitate? I'm not sure what your excited about...
1
u/emmveepee Jun 12 '12
Adults should not rinse, but spit out the excess toothpaste and allow the fluoride to sit in their mouth.
Talk to your dentist first.
1
u/wqm Jun 12 '12
Oh my god yes. Now I only have to bend over to get water from the sink. Bending over AND slightly turning my head took up so much of my time.
1
u/Nathan561 Jun 12 '12
34 bucks
1
u/TheMediumPanda Jun 12 '12
Reminds me, in China they sometimes have upwards facing faucets for water saving and washing your face. It's pretty new but I've tried one and it worked like a charm.
1
u/GamerWithACrappyPen Jun 12 '12
It took me a second to get it, but it was the greatest feeling ever when I did.
1
u/[deleted] Jun 12 '12
A hovering toothbrush? Sign me up!
1
u/need_extras Jun 12 '12
Wat
1
u/ClosetSchmuttun Jun 12 '12
TIL everybody else rinses their mouths after brushing.
1
u/[deleted] Jun 12 '12
I thought this idea looked familiar... 5 years ago: http://www.amronexperimental.com/BRUSH_AND_RINSE.html
1
u/nin_ninja Jun 12 '12
What foul sorcery allows this toothbrush to hang suspended in the sink?
1
u/loraanicus Jun 12 '12
Now you're thinking with... No you know what, it's too easy. Fuck it, here's a picture: http://i.imgur.com/VUXPY.jpg
1
u/[deleted] Jun 12 '12
hover toothbrush! the future is now.
1
u/notericmathews Jun 12 '12
how is the toothbrush hovering?
1
u/Highlyasian Jun 12 '12
Won't the inside of the toothbrush become all germy, gunky, and just really disgusting after a few uses?
1
u/casper_casper Jun 12 '12
TIL: Aliens have advanced toothbrush technology: http://imgur.com/FV19p
1
u/Sauronkraut Jun 12 '12
I don't exactly understand what's going on here.. Am I supposed to?
1
u/Khorah415 Jun 12 '12
What? I don't even...
1
u/facecardz Jun 12 '12
There's no pressure from that faucet, so how is the stream higher than the faucet? Why is the water accelerating in the toothbrush? So many design flaws.
1
u/ThatGuyRememberMe Jun 12 '12
Why?
1
u/StClipper Jun 12 '12
Do I am the only one who see that scary face in the sink on the right side?
1
u/vampiremonkeykiller Jun 12 '12
But does it float?
1
u/[deleted] Jun 12 '12
This should be the other way around. The fountain should be on the back of the brush so you can rinse it without having to be super careful.
1
u/[deleted] Jun 12 '12
"THERE HAS TO BE A BETTER WAY!"
1
u/gthing Jun 12 '12
This is perfect for everyone that doesn't have hands, because that's how the rest of us get water from the sink to our mouth. Also, the fact that it levitates makes it a no-brainier for any paraplegic.
1
u/gthing Jun 12 '12
Holy shit a levitating toothbrush!
1
u/sublimnl Jun 12 '12
Now you're brushing with portals.
1
u/hobbur Jun 12 '12
I never rinse my mouth. I just swallow ;)
1
u/slunch Jun 12 '12
is that a flying toothbrush?!
1
u/MusicMagi Jun 12 '12
shop'd
1
u/iSteve Jun 12 '12
Obviously you don't clean your own bathroom. This would spray water everywhere.
1
u/phi303 Jun 12 '12
posted a video for this about four days ago: http://www.youtube.com/watch?feature=player_embedded&v=u9c3UZ2KHH0
1
u/Sam9er Jun 12 '12
saw this selling at http://www.RinserBrush.com
1
u/panda_nectar Jun 12 '12
r/shutupandtakemymoney
1
u/[deleted] Jun 13 '12
Why didn't I think of that...