This Tesla Valve Straw Only Works In One Direction

[@falconeio]

I'd love to see this done with a clear version and colored fluid, so we can see how it's actually flowing inside.

[@mathewking1559]

And then get a nice slow motion when you change out the dye so you can see the colliding fluids

[@falconeio]

@@mathewking1559 I smell collaboration with the Slow Mo Guys

[@tylorban]

Yeah and also clear the fluid between tests

[@daxroger3075]

My exact thought.

[@andym5195]

youd need some glitter or somet to see the vortices

[@kamo7293]

A clear version would be even better if it's possible then we could see the fluid impeding itself

[@abdalnablse10]

Yes

[@ethandaley10]

Ye

[@i_cam]

Y

[@alorasky6147]

Y

[@Bananovskyyy]

Watch nighthawkinlight video about that. Much better quality, and detailed explanation

[@devonfarmer3438]

The reason(other than it being ineffective) we don't use valves like that in the plumbing trades is because mostly due to how difficult it would be to service, and build up of debris would be awful

[@davidtuchscherer6276]

Also because they're obviously quite ineffective....

[@wbeaty]

@@davidtuchscherer6276 But does it still work at extremely high frequency? Even ultrasonic? It may still work fine in conditions where all other valves will fail. INSIGHT! With "Reynolds number," ...whenever operated at very low speeds, the fwd and rev flows should be identical, (when very slow, or also when using viscous syrup.) The Valvular Conduit requires high-inertia fluids in order to produce its little fluid jets, and to behave as a diode. (The "vortices" are in fact small fluid jets, either flowing in parallel or colliding opposite. Fluid jets are created by vortex-shedding.) If the valve converts alternating fluid flows in to "DC," does it also convert sound into constant pressures, or even convert sound into wind? Test it with incense smoke, plus music. Put it into your bathtub. Vibrate the water, or maybe play loud music, or simply yell at it. Does the Tesla Straw start swimming? Powered by fluid propulsion? . In terms of fluid jets, the Tesla Valve is a long stack of NAND gates, where two jets are aimed towards each other. They collide, producing a "logic low" of near-halted flow. But in the "good" direction, the two fluid jets are aimed in the same direction, producing a logic function AND, with a "logic high" maximum flow output.

[@crobodile]

“Can I have some of your drink?” “Yeah just flip the straw over to the side I didn’t put my lips on.”

[@vanterbaba4110]

Oh thats so smart... SHUT UP AND TAKE MY MONEY I WANT MY DRINK FOR MYSELF

[@jahm0vetact]

LMFAOAO

[@RyanSmith-wc7ku]

@@vanterbaba4110 what if they just don't flip it over-

[@Demian1]

Lmaoooooooooo

[@newcatvideos3306]

Story of my life

[@loganpedersen9906]

“Why would you want a one way straw?” So the kids don’t blow bubbles in their drinks

[@kristenstreck3123]

My exact thought.

[@nerdup1238]

Flip it upside down and blow out

[@BESTofAlp]

blowing bubbles is fun!

[@gamtheobbiest7945]

It’s more fun than drinking it normally

[@haram69187]

What if they turn it.......its big brain time

[@kibbiking9122]

A one-way straw would be useful if you're sharing a drink from the same cup because the valve at the end of the straw makes sure no liquid being sipped goes back into the drink.

[@KobeLoverTatum]

I mean I guess that idea would be useful in that niche circumstance but that’s not how this straw works. It’s only works one way meaning if you flip the straw it won’t work, the liquid still flows in and out like any normal straw when using it the right way up.

[@kibbiking9122]

@@KobeLoverTatum I think there are other valves which you could use that completely stops liquid from flowing back out. Also, a valve which stops all liquid from flowing back out also ensures that the drink is always at the top of the straw, so you don't spend energy sucking air before the liquid arrives. This is useful for people who have respritory challenges and have trouble sucking.

[@wraiz8563]

it wouldn't lmao, just keep sucking while taking the straw out of the liquid

[@clickthecreeper9463]

sure, but also if you actually take germ theory into consideration the negligible amount of spit shared with a regular straw is entirely unlikely to get you sick in any way.

[@azisalive4972]

I'd prefer my own straw, cheers

[@shadowlord0162]

"is it harder to suck in one direction than the other" looking at my life choices i suck in both directions

[@atriyakoller136]

Look at the bright side (not the KZbin channel though)! You're a human, not a Tesla valve then

[@shadowlord0162]

@@atriyakoller136 i guess thats a good thing

[@Incognito-rb4tz]

@@shadowlord0162 or is it? *_vsauce music intensifies_

[@rgerber]

glorious 👌

[@shadowlord0162]

@@rgerber thank you

[@prathameshdeshmukh9530]

Now combine all valves for ultimate blockage.

[@Abid_Ibn_Ashraf]

I think, we have to combine all '"you'" kind of commenter to get a critical comment of level '"infinity'"

[@lovingcapacitors8382]

@@Abid_Ibn_Ashraf better than original comment

[@ManjitKaur-lm9sj]

lol

[@HAL9K1969]

Or just use a cork

[@Lillylafrog]

Ah so when one breaks it has a backup, smart

[@thrasher2344]

I think if you used a constant pressure feed you would possibly see more of a difference because gravity just pulls the fluid downward and fills the loop and flows to the next. If it were flat on a table perhaps it could build up more backpressure. I don't think it created any back pressure there.

[@auralynn3862]

"Why would you want a one-way straw?" For sharing a drink. *Shudders at backwash*

[@KILLRXNOEVIRUS]

AHHHHHHH

[@stormiepeterson2943]

This is what I said or also for a kid who blows bubbles into their drink and making messes. 😂

[@gregorysharp]

Nothing like sharing with your child. Chewed pizza floating in your cola.

[@284mbp]

there's a literal pandemic now, i can't imagine sharing any surface where people are putting their mouths on it.

[@atriyakoller136]

@@284mbp maybe if both people have their own one-way straws?

[@L3GioG57A]

4:14 “I can still get it, but it is a lot harder. I can barely get any water unless I suck hard. This way, it comes right in.”

[@willywocker1086]

“So its hard to tell how much im actually getting in my mouth”

[@xjessee7x210]

PAWSEEEEEEE

[@iamelite20]

U are ct ik silver ct

[@rickylafleur5823]

especially with his flamboyant voice.. dude def has experience.

[@alexdonnell6921]

thats what she said

[@arielreynante8795]

My question is if it impeads the flow of air enough to discourage a child from blowing bubbles

[@EggsBenedict1]

Probably yea

[@fenrisredacted2870]

Is this why Half-Life 3 hasn't released yet? It's going the wrong way through the valve?

[@hugohum6346]

underrated comment

[@ududydhjsus]

ikr

[@MR-pt7ou]

stupid and not funny

[@ududydhjsus]

@@MR-pt7ou rude.

[@imsnakepancake8539]

i meann half life alyx is out sooooo

[@russ_carspotta]

Science dude: "and no water comes out" water:*drip*

[@jaredhared]

It resists water it doesnt repel it

[@russ_carspotta]

@@jaredhared Ik but what he said is the reason I said it

[@jaredhared]

@@russ_carspotta ah i see

[@russ_carspotta]

haha u will never know what i said before

[@rickylafleur5823]

@@russ_carspotta yup.. a leaking one way valve is a faulty one. so no, it does not work lol.

[@Riverbend1752]

I could see a one-way straw being useful when drinking something carbonated. When I have a regular straw in a carbonated drink, the bubbles adhere to the straw and pull it up, sometimes enough that it falls out of the cup. If there were a one-way valve, the weight of the liquid in the straw may help reduce the floatation from the bubbles, thus helping keep the straw in the drink.

[@dwarfganon6900]

TAL:As you can see, no water is coming out... Water: *Is coming out*

[@cutiebunnyamber3447]

no

[@Woodledude]

That's not water, that's... Drops. It's different.

[@KaitiKat216]

@@Woodledude well, they are drops of *water.*

[@Woodledude]

@@KaitiKat216 *covers your mouth and pulls you aside* Hey, hey, shh, take it easy. Listen, stay quiet about this, and we'll make sure you're taken care of... *slips a dollar into your pocket*

[@tripodgamer]

@@Woodledude dude that’s kinda sus

[@quintenvermeulen4576]

The action lab: *uploads a video about the Tesla valve* Integza: *heavy breathing*

[@Ashreen_ofccc]

Haha

[@SciNonFi]

YEESSSS!!!!

[@Chryoss]

Thought the same xD

[@raulrblx3200]

Who ruined The 69 likes

[@antoniodelcogliano2182]

YES

[@ReelFusionbySupun]

Actually, the one way straw may help prevent diseases when sharing drinks. Because the person's saliva doesn't go back to the drink

[@DeadNova_Gaming220]

Well if you drank out of The same straw it won’t work

[@sayannakarmi]

Yes you will just suck it up again

[@caliberwhips9595]

I glanced at the title and thought for a sec Tesla was now making straws

[@TNXaro]

Me too, lol

[@Q--_--90909]

I thought that also.

[@flare_studios.]

$420 a straw

[@Ishan716]

At this point, wouldn't be surprised if it did.

[@gabrieltavares774]

@Pablo Andres Aguilar Mendez exactly

[@shhh7857]

This whole video is a “that’s what she said” joke

[@savagebros9085]

I was gonna put don’t be gutter minded in the comments too😭

[@NikoxNobu]

Read your comment just as he was mentioning the ball check valve, gave me a chuckle

[@davybastiansaputra]

I don't understand

[@capo4742]

Underrated Coment

[@clover-il7tf]

🤦‍♀️

[@DanielHodgeVoice]

Tesla: "We have made the straw less efficient." Me: ""A Trend of yours I've noticed."

[@dragonsbreath389]

Different tesla man

[@immfi]

DragonsBreath38 r/wooosh

[@dragonsbreath389]

@@immfi no.... its not as you can see multiple different people have said the same thing

[@mikvance]

"It works when you suck in one direction, but not the other." Literally what I've been telling her this entire time.

[@VanQuoc-qh6qy]

Lol bro u the best haha. Im laughing like hell.

[@herobrine1847]

What do you mean sucking in another direction

[@KILLRXNOEVIRUS]

@@herobrine1847 Blowing smh

[@yaryort6134]

@@ProdEXTWO 😂🤣 prolly like, 13

[@SoapMcCallister]

@@herobrine1847 bruh

[@thejchristopher]

4:20 that’s what she said

[@ANTSEMUT1]

Lol.

[@Jayerbruh]

420 funny number

[@jessepinkman4447]

Not to me! 😂😂😂😂😳😳😳😳😳😳😂😂😂

[@olivermitchell7526]

I thought of that then looked in the comments

[@whatthefridge1o1]

Nice

[@amaangaur3850]

1:15 the moment i thought he'd now surely mention Tricuspid and Bicuspid Valve too

[@hansimansi7702]

4:20 what a legendary timestamp and what a legendary quote

[@aromanticfranziskavonkarma]

-Oh god lmfao-

[@prodlowkeen]

searched for that comment and found it

[@constantin26]

@@prodlowkeen same lmao

[@HIBA_DA_LOLICON]

and it's 420 noice

[@LucidMlem]

69 likes too

[@CarolinaGunGuy]

"...but then, no water comes out." *Water drips out.* 😆

[@railx2005]

Ikr lmao

[@00WatName00]

Well he _did_ say "It doesn't completely block flow in one direction, it just increases resistance"...

[@rickylafleur5823]

@@00WatName00 yea but a one-way valve completely blocks flow in one direction. it's called a fail.

[@earthlingdad]

This is my favorite science channel. I must be the only subscriber that didn't know you are a doctor. You earned a doctorate in Chemical Engineering. Not many PhD's with a popular KZbin channel. Please don't stop educating us. This is also my son's favorite science channel.

[@Zeedius]

"Why would you want a one way straw?" Time-efficiency, imagine all those seconds you'll save just by having the fluid ready to flow into your mouth, without it needing to climb the whole straw.

[@Andreadel96]

Genius.

[@mickymoist]

One-Way Straws make drinking easier for individuals with a weak suck, oral motor difficulties, and/or problems generating and maintaining suction.

[@falalogo]

@@mickymoist And stop kids that blow on the straw to make bubles

[@tannernotter3857]

And to stop kids from blowing bubbles in their damned drink!!!

[@darwisyaiman1865]

Usefull to empty the cup maybe?

[@Willyknightka]

So many opportunities to say: that’s what she said... but I’m mature now, and didn’t want to

[@The.throngler]

That's what he said

[@supernova719]

And now you have 69 likes. Nice

[@Willyknightka]

@@supernova719 Lmaoo😂😂

[@supernova719]

And now it's ruined. No more funny sex joke :(

[@Rachara]

Your mom wanted to.

[@ge7647]

"Why on earth you want to buy 1 way straw" Good Point

[@Spherey]

1:20 this is basically me trying to prioritize my thoughts with adhd symptoms but my thoughts just end up being a mess

[@KILLRXNOEVIRUS]

Almost like the *exaggerated swagger of a black teen*

[@justswift5369]

@@KILLRXNOEVIRUS gives me goosebumps

[@heyyatif6062]

So you're saying that everything Tesla made was just astonishing revolutionary 🎊🤯

[@merlinmantikur1338]

Always has been😂

[@Ahayeahishere]

Actually hes saying that this invention is not really usefull

[@mystcat3]

@@Ahayeahishere But thanks to it, we perfected the design

[@DrCrunkMusic]

It was useful in its day, clever mechanical solutions to age old problems. Another principle of this are the viaducts the Romans built to provide clean running water to their cities way before the invention of pumps.

[@pelufaz8435]

Not a lot of people are as smart as Tesla

[@wolfyviking4692]

I have made a muffler for a truck, it works great but only us one loop back. You should try it too remember to put glass packaging in the loop

[@lucifersdevilishdetails.]

my niece annoyed me and her mother when she blow bubbles in her drinks so a one way draw would help stop that.

[@KILLRXNOEVIRUS]

😂😂😂😂

[@Randomdudefromtheinternet]

This is probably why this straw was invented, it's true purpose lmao

[@Rose-ec6he]

I too vouch for a one way drawer

[@nihaalspeaks]

Air can still travel through perfect

[@imeleventeen]

@@nihaalspeaks no it can’t. It works the same way

[@PanD0rA_]

“No water comes out” The water coming out: *I serve no purpose*

[@CaptBucket]

Honestly just glad it exists. Who knows, a practical application could come up in the future. Just like how not all simple machines all used all the time.

[@audigex]

They’re already used as a non-mechanical (no moving parts to break) backflow limiter

[@homomorphic]

I don't know how many times I've put a straw in my beverage upside down and said to myself "it is so very annoying that this straw works upside down". This problem is now solved.

[@n4ss]

“it flows better in one direction” *turns to my girl*

[@piday9633]

*nonexistent*

[@itsdalion6612]

What's a "girl"

[@spiffybeaver4764]

@@itsdalion6612 idk, never heard of that before, too

[@DumbassUsername]

Im more of a visual learner.

[@Evan102030]

I just learned about this yesterday. The mind of Tesla was simply amazing, the way he was able to visualize nature is mind blowing.

[@carlrichie2012]

Woooooo early to science for the first time in my life

[@rushunnhfernandes]

😅

[@EthanWinter-]

In your first few days of life you were early science

[@gearslayer-vn3gz]

Me 2 haha

[@carlrichie2012]

@@EthanWinter- 😂😂😂

[@henrygrace3643]

lol

[@Nedeles]

"It took a lot longer" Reality: 5s more

[@KaiSoDaM]

50%

[@monasimp87]

1.5x longer so like imagine a 1hr movie but it takes 30minutes to load the movie in the middle it is just irritating

[@hofung614]

yea im like hUh

[@holdthisforme8235]

In comparison lmao.

[@orderofthesnack5558]

It wasn't even really 5 second more, when he did it the right way he flipped it and started the clock so its already gonna be a second behind then he stopped it as soon at it left the syringe but not the straw as shown by water still coming out, he stopped the timer at 11 and said "10". Then for when he flipped it the wrong way he flipped it then started the timer, same thing he did to the first one, but this time he waited for all the water to be gone from the straw before stopping it. idk, I get the experiment but like I get that its gonna be slower but come on what you do to one side you need to do to the other to make it a fair test, might just be and I easily could just be blind as a bat and he may have stopped it after the water left the straw in the first one but from my perspective its not also I need to get a life just typed out this whole thing about something I could easily be wrong about just cuz.

[@michaelperreault184]

From your explanation, it makes sense that it is made for higher frequencies since the turbulence will peak when the state changes. Once you reach a permanent regime the turbulence will be much lower and yhe fluid will ho through much more easily. Both the shape and the principles remind me very much of a coil in the electrical field.

[@Bob3D2000]

6:08 People who don't want their spit to flow down the straw into the drink they're sharing with someone else.

[@dookie3453]

The other person will still drink your spit as it is in the straw

[@Indee___]

@@dookie3453 Do you share straws with people??? do you not just get two straws???

[@dookie3453]

@@Indee___ lmao I have no idea why I thought someone would share one of these straws or any straw just wrote that comment quickly

[@physicsisawesome696]

@@dookie3453 lol

[@paulaccuardi9071]

@@Indee___ the problem is the backwash going back into the drink

[@Solotocius]

5:43 He's drinking either blue fanta or literally a cleaning chemical (I wouldn't be surprised if option 2 was the case)

[@Bijlez]

Or water with food coloring in it

[@Solotocius]

@@Bijlez or cyanide lol who knows

[@hemantbshanbhag6104]

Kerosin

[@craigcorson3036]

@@hemantbshanbhag6104 In English, we spell it "kerosene". No sweat; from your name I'm assuming that English isn't your first language. I just thought you'd want to know.

[@Solotocius]

@@hemantbshanbhag6104 yumm

[@Kartik-mz7sk]

you did a very hard job with the black tesla straw upside down......... i'm impressed

[@hong4033]

This man just ingested thousands of microplastics by drinking from that straw.

[@caazi]

Wdym

[@IDK-yx2lr]

tasty

[@yosyp5905]

pure PLA is *technically* food safe since it's made from corn starch, but obviously many compnies put dangerous additives in. Still, you ingest tons of microplastic every day, this little test is almost nothing compared to what our body has to sustain.

[@eathanbertrand1301]

@@yosyp5905 they probably knew about all yhe microplastics and wasshed it out before hand.

[@yosyp5905]

@@eathanbertrand1301 Washing does close to nothing, it gets rid to the mostly free, big particles, but microplastic is not that

[@YaboiAware]

When I saw this in my recommendations and saw 'one direction', I actually thought it meant something along the lines of 'you have to face north to use this straw' XD

[@Oscar-vs5yw]

That would actually be really cool and probably useful aswell!

[@TAGombie]

@@Oscar-vs5yw how would that be useful

[@Oscar-vs5yw]

@@TAGombie magnetless compass

[@cupriferouscatalyst3708]

@@Oscar-vs5yw Now I'm curious, what would be the benefit of a magnetless compass? I'm sure there has to be one but I don't know enough about magnets to think of anything. Do they interfere with electronics maybe?

[@eSSentialplaysYT]

"Is it harder to suck in one direction, than the other?" Activision-Blizzard.

[@dimitrilepain3821]

LeL

[@rorschacht8478]

Bur

[@samjefferson3473]

as an employee can confirm

[@sufferdroid]

True story

[@rayalexander2281]

Bruh, tesla is soo famos he has a straw named after him

[@VallimMotta]

Elon musk is flying😎😎

[@s1bh4mgodfl3shx]

Cuz he made it?

[@dragonare715]

He named it after him Every scientist names shit they discovered Mostly every scientists that name something after them I consider a narcissists

[@itsarin2166]

@@dragonare715 its either the inventor named it himself or the inventor is known as the one inventing it so people is using the inventor name to call that certain invention.

[@dragonare715]

@@itsarin2166 yeah... I had a stroke while reading this

[@masquerade1954]

Im a bit too dirty minded for today's episode

[@ranmindyt2902]

Bruh

[@Spherey]

uhm

[@masterplayer5982]

What do you mean?

[@ih87p84]

Same

[@theaslam9758]

@@masterplayer5982 trust me, you don’t want to know

[@iseraid1504]

5:39 "For example I just put a one way valve on a straw here" *starts drinking antifreeze*

[@nihalariyawansha6150]

Can you show how gas flowing through the tesla valve. Using ballon or something like that..

[@roughwoof]

*I can make a lot of "that's what she said" jokes, but that would be taking the easy Road.*

[@KarstenJohansson]

Easy? That's what she said.

[@themineshaft6891]

The example with the water bottle at the beginning was a really good way to explain it, thanks!

[@weignerg]

You could use a combination of the valve types to improve longevity of the valve's maintenance for the moving parts when high pressures are involved.

[@horseradish0911]

1:07 wow it's amazing how he could name all of them from memory

[@lessthanahome]

Cuz they all used to be names for his bhole

[@_Cfocus]

probably have a paper right in front of him of what he is going to do and what he should say its just hidden everyone does that

[@horseradish0911]

@@_Cfocus i know...

[@jimjames4348]

I love these videos. If only I had youtube when I was at school.

[@utalis47]

it would be a good concept for a fluid pump (for water)working much like a check valve does,but as a straw it would be very hard to clean and get bacteria out.

[@La_Pucelle_dOrleans]

There’s better valves for that

[@pirobot668beta]

The 'Tesla valvular conduit' was part of a larger system. He needed a flow bias; easier flow one way, more resistance the other. Part of how it worked so well in his application was the pulsing nature of the flow through the 'valve'. The pulsing leads to pressure and temperature gradients in the conduit; the heavy slab walls of the conduit acted like heat-sinks and to pre-heat incoming air. It was to be the inlet valve for a type of large pulse-jet engine... The flow bias kept pressure spikes in the combustion chamber while allowing smoothly flowing inlet air. The comprehensibility of air makes a sort of spring to absorb the 'bumps'. ... That is one aspect of how Tesla worked; the final use of any one part was not always apparent. His infamous 'death ray machine' was never presented all at once; he left a trail of bread-crumbs throughout the US patent system.

[@JoeC26]

I didn't know Tesla and Valve had a cooperation together, this is incredible

[@demagab]

6:00 I have that exact check valve for my fish tank aerator. We added that valve after the tank decided, one night, to empty itself all on the floor and eventually leaking downstairs

[@vesa7069]

A one way straw would keep your straw from floating up and out of the bottle, glass or can as it stays filled with the liquid.

[@vasiliansotirov6976]

a normal straw wouldn't float either because levels would be equalized

[@vesa7069]

@@vasiliansotirov6976 You've never used a straw now have you?

[@shashwat4920]

*Action Lab: Tesla valve straw* Me: Elon Musk??😂

[@biem7091]

???

[@EQINOX187]

Don't give Musk another idea to steal and claim he thought of / invented

[@shashwat4920]

@@EQINOX187 😂😂

[@Sclonez]

It would be interesting to film a transparent Tesla valve with a colorful liquid to visualize how it works.

[@PrometheoNTG]

I suspect that you may be able to make a more effective tesla valve with some refinement on your manufacturing of the straw version. Still nice that you were able to measure an increase in resistance with a relatively crude one!

[@BirbBoiYT]

"Yeah, that's a normal straw" ...

[@krsgopalan]

@The Action Lab - The time taken would be more than 15 seconds on the wrong side if you had the straw on the top of the container. By having the opening of the container at the bottom will ensure that the liquid in the container seeks its own level on the straw as well so that by the time you flip the straw down, its already half filled thus making the water flow easier. if you still want to keep the opening of the water container downwards, the tube connecting to the straw needs to be longer so that you can hold the one way straw higher than the container so that the liquid does not get into the straw initially making your experiment accurate to measure the actual time taken for the liquids to pass through the straw on both sides.

[@likearockcm]

After watching 2 other videos this one is the only one that explained it in "simple" terms !!

[@Snowaxe3D]

That's a lot of "SUCKING" in one video, :D

[@DaEnki1]

Yikes.

[@Luna-yo5fk]

Everybody gangsta' until you pull one out of these in a McDonald's

[@houckyy4530]

Not sure if you mentioned this in the video, you could use a tesla valve to regulate how much fluid flows by slowing it down based upon the number of loops. Just a thought?

[@deco3334]

5:35, ooow that’s some pretty fresh water you have there

[@rieviousretrograde4281]

This should be taught in school. Like elementary bc this would've been so much fun and I could take a straw home.

[@crewpeery9076]

It’s so funny to me how awkward this man is. No hate to him, I love how comfortable he is to make videos for the internet. It’s just hilarious seeing his lil awkward mannerisms and flow when talking lmaoooo

[@isaacwykstra2059]

4:24 just close your eyes and listen for the next few seconds

[@mattlogue1300]

He he

[@nicholaschavez9204]

“But then no water comes out” water clearly drips out

[@bernhardtmitdt2586]

Very good explanation using the small ball - does not need and knowledge about physics. Thank you!

[@angelosantos1756]

Tesla valve straw: Sucks one direction and not the other. The year 2020: Just plain sucked all around.

[@HappyTheOrdinaryCat]

you would know huh lol

[@Oofu]

So just a regular straw

[@The_Biologist27]

2020 and my girlfriend have alot in common then

[@HappyTheOrdinaryCat]

@@The_Biologist27 she sounds like a real dirty fish 😾

[@Rocush]

its alot harder Straw: takes 5 more seconds to drain the water

[@sroy7982]

The most fascinating word I learned in this video "Ball check valve"

[@NeverSnows]

"who would want a one way straw?" who wouldn't? imagine that: you suck a liquid on a normal stral, you take it out of your mouth, but that liquid that already touched your mouth and got contaminated goes back and contaminates the rest of the drink. Aka, you can't hand the drink over to a frriend. with a one way straw that problem does not exists.

[@ruler_of_everything]

ya but still your lips touched the straw sooo get 2

[@NeverSnows]

@@ruler_of_everything but that IS the idea, to get 2.

[@marlonyo]

But this way there is no indirect kiss

[@Olliebunny]

Fill the straw with vodka then put it in another drink as an automatic chaser

[@General_Griffin]

@@Olliebunny A true genius is among us...

[@ashley-m]

It’s the anti-backwash straw! Perfect for sharing drinks during COVID. All you need is a 6 foot model

[@gormdenorm678]

The reason to use a one-way straw is so that the straw keeps being down in the drink. The problem with real straws is that when you are not sucking and the tube gets filled with air the straw has a tendency to bounce up from the water and out of the drink. But with the one-way straw as we saw in the video the straw is filled with liquid and therefore not bounce out of the drink. *Big-Brain straw time*

[@jordantoon4270]

you sir/madam in a less techical way to putting it as i did have the rigth idea.

[@l3igwill1994]

NO MORE BACKWASH IN MY DRINKS!! ...

[@jordanleach7370]

I am a mature adult... I am a mature adult... "That's what she said"

[@kendrawilmer5374]

Yesss I was waiting for this comment

[@jacrispy3308]

@Logan Goldberg same lol

[@charizard2310]

I hoping to find a comment like this. It made me ha ply to find it!!!

[@TheTheninjagummybear]

Why would she say that?

[@davidjohn_va]

Dang... You beat me to it

[@nativeoutdoors1780]

This guy is way cool, like he is obviously very educated and can grasp many obscure topics, but unlike some other youtube science channels, he doesn't act like he needs to show people how smart he is, instead its like he wants to help others to also get excited and learn, which I think is pretty cool

[@inuka6969]

Your saliva is not going to the drink, when you use a one-way straw.

[@patricklukcy13]

Why would anyone be worried about their own saliva being in their drink? Wut?

[@srishailspujar6278]

I literally came here via notification but I'm still so late ........why......

[@Benbim]

Heard about this valve and was not sure how it worked but sounded very interesting as no moving parts. Thanks to you have seen an example and perfectly explained with the ball bearing. By the way Nicolai Tesla not Nicolas. Sorry to be pedantic.

[@fluoroantimonic9950]

1:19 my mind broke into nanopieces

[@cameronrutten6483]

this valve works best horizontally without suction or pressure from either end the valve however works really well with higher levels of flow (not pressure)

[@WolfPackGameing]

a one way straw is used in the water pack that hikers and military use, it keeps water in the straw right away, but also keeps it from leaking by using it with another one way valve

[@foxx8414]

One way straws would be more hygienic when sharing drinks

[@Friend_2162]

When you stop drinking, a small portion of what you had in mouth (really small) goes back. This straw has reservoir in its first 5% of size, where it still keeps the water that was near the end when you been drinking. For this purpose, it is nearly same non-hygienic as normal straw, if not the same.

[@QPatriot07]

Or just don't share drinks with anyone with which "hygiene" would be a concern...

[@williamylee]

4:19 "I can barely get any water up unless I really suck hard" Me: I should be able to do that

[@vetevg]

Uhhh what

[@sashathedonut]

@@vetevg you will understand when you are older

[@vetevg]

@@sashathedonut Oh ok I just got it I was confused at first

[@calebS.Buddy_Rich_Best_Soloist]

I was hoping he was going to demonstrate how gas flowed through -A simple air blow through the straw both sides.

[@MrPicklesAndTea]

“Why would you want a one way straw?” So multiple people can drink from the same cup without sharing saliva.

[@adamhamilton8242]

2:04 *vortex (“vortices” means more than one vortex)

[@tomcatt360]

I was hoping I wasn't the only one who caught this. I was like "Wait, shouldn't it be vortex if it is singular?" Thanks

[@sherine9033]

Wow I didn't even know that. Thanks

[@Mr.D.C.]

I think it's common for some people in speech to say vorticie instead of vortex, and verticie instead of vertex

[@Axel_Andersen]

Had come here just to comment on the title ;) Because the purpose of Tesla valve is to allow flow in one direction only, it actually perform correctly in both directions when it allows flow in one direction and not in the other. So it works both ways as intended. Now watch the video to see if I was right or not. ;)

[@patrickreyes8339]

I love seeing people doing complicated things than simpler traditional way

[@patrickpablo217]

does it work differently if the straw is totally full of liquid vs having air pockets in the loops?