Physics Girl - 2018-10-12
Slime exhibits some crazy unusual properties, like viscoelasticity, because it's a non-newtonian fluid. Learn more about CuriosityStream at https://curiositystream.com/physicsgirl We can use non-newtonian properties to make the fluid "defy gravity" and climb up a spinning rod. This is called the Weissenberg effect. If you liked this video check out these: 5 SCARY Physics Experiments! https://www.youtube.com/watch?v=Wea7Gc-b0EA I built an acoustic levitator! Making liquid float on air https://www.youtube.com/watch?v=ABjRnSYw-4k Subscribe to physics girl: https://www.youtube.com/subscription_center?add_user=physicswoman http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl Creator: Dianna Cowern Research: Daniel Walsh Editing: Dianna Cowern and Jabril Ashe PO Box 9281 San Diego, CA 92169
I hereby announce the Cowern Effect: the feeling of growing curiosity of physics caused by a YouTube video.
"It climbs into my belly tho"
"just another effect named after some dude"
I think Dianna hit her patriarchy limit for the day right there. :P
i believe physics girl is losing her mind, color overload in here. Thats the reason she ended up in the multicolored aisle of pens and markers. She has a soft spot for colors
Ground control to Major Tom
looks like something else climbed up in her belly
Major del 8
My yeast dough did this last weekend to my dough hooks... it was a nightmare to clean up and not a nice science experience at all :(
no wonder that bread you gave me tasted funny. reported for attempted murder
Dough hooks are helixes, and therefore are not symmetrical. Like gloves, there is a "left" hook, and a "right" hook. If they are installed correctly, then the dough is pushed down into the bowl. If you switch them, however, the hooks will draw dough upward into your beater. You may want to check if one of your hooks is marked to help you keep them straight.
lol same experience here.
Don't know for sure, but I wonder if the gluten matrix gave it the viscoelastic property. Like the slime in the video, over worked high gluten dough develops that elastic spring back when I try to pull the dough for Sicilian style pan pizza.
@Nati Whatever 😬😨
Ketchup is also non-newtonian btw, but it's shear thinning.
That’s what she said. (Dianna, that is)
Exactly. That's why it doesn't come out of the bottle until you exert enough sheer stress...then it flows all at once.
Yes, it is. And, that property has a name, too: to be thixotropic, or thixotropy. Look it up, it describes ketchup perfectly.
Will penicillin alleviate the symptoms of thixotropy?
nineball039 Only in liquid form, taken through a rotating glass drinking straw.
Wonder if this would work with Ooblek too. (You know, the most famous non-newtonian fluid of water and cornstarch)
Oh, you meant you tested ketchup, and also tested ooblek. I thought you meant you mixed them together. Which... well, maybe that does work, depending on the proportion of the mixture? Or maybe not? Did you try mixing together non-Newtonian fluids? (I would try this if I had a bit more time and a bit more cornstarch on-hand - the former being a bit bigger of an issue than the latter.)
So that's why some ketchup had a cameo appearance in the video. This property has a very practical application, btw.: It's why you can encourage those stubborn last few portions to come out of the bottle by smacking it, even if you're hitting the bottom end. (Which would be the wrong end for other fluids; Oobleck would just get even more stuck.)
@BadHabitMarco Ketchup is a non-newtonian fluid in the opposite way that Ooblek or the slime in this video is. When Ooblek or the slime are under sheer pressure they thicken and become more viscous, whereas ketchup is thick and viscous when it is not under sheer pressure and it becomes thinner and less viscous when it is under sheer pressure.
Came here to wonder this, thanks Physics Girl!
Yeah, the shear thinning nature of ketchup is the reason that whacking the bottom of an upturned glass bottle can actually help. One would usually think that this sort of whacking would simply push the fluid further in to the bottle (inertia and stuff) but ketchup is an exception. Still, I prefer the turn-your-arm-into-a-centrifuge method!
Who doesn't love a good old fashioned non-newtonian fluid!
From the first half of the title, I was expecting supercooled helium, but this is nice as well!
John Chessant You need to go to Cody’s Lab, for that edge-of-reality hardcore chemistry!
2:43 thanks for the new joint rolling technique :)
You're unchained dude!
Hello lab coat, my old friend
I've come to put you on again
Because the viscoelastic elixirs
Left a trail of stains upon my trousers
And a theory of a rod twisting in my slimes
Squeaky climbs
Within the sound... of Science
#slimeforscience
1:01 it climbs into my belly though 😛😜🤪😝😛😝🤪🤣🤣🤣🤣🤣🤣🤣🤣
If in doubt, put in belly (tho!)
#EveryDayMystries
Weeping willows have all their branches hanging down, even the ones on top, so how does the tree grow UP?
Physics
IN MY BELLY
4:25: Those South Park jokes never get old.
will it happen to oobleck ?
i think it wont as it isn't viscoelastic
"hello science my old friend. you're here to blow my mind again....."
When I was at USC getting my degree specialized in hydrodynamic engineering. I did a similar experiment / freak the drunk people out show.
"it climbs into my belly tho" thats so gangsta
"It climbs into my belly"
Daddy
I'm sooo sad my science project for this year is already started so I can't change the topic... It is electromagnetic propulsion by the way
3:40 ( ͡° ͜ʖ ͡°)
@Lightning Lance should be a looped meme.
I got that!
is it me or can you could tell, with that slight moment of hesitation, that she was thinking this could go terribly in the comment section
That tye dyed looking slime stuff was pretty awesome.
not at all
thank you, everytime you post a video i lear more stuff! thank you and much love from indoneisa <3 :)
Try doing the same with ooblek. It is also another non-newtonian fluid. It’s a combination of water and cornstarch.
doesn't work, ooblek is a non-newtonian fluid but it isn't viscoelastic.
<3 Physics Girl, you make me swirl <3
And then: profit!!
Underpants gnomes for the win!!
Thanks for the great content. It’s been a weekly event for me and my niece to watch your new ones, and old ones we missed.
I already found out it even before I even watched this.
"In my belly"
I love your videos, but I don't like how THE TITLE IS SCREAMING! AAAAAHHHHH!
Haha you seem to get so excited while explaining. Haha thats cute. Keep up the good work. 🙂
This work whit some dough! Sometimes when I make bread the dough klimb my
dough hooks on my beater. ^^ Baking i sience! I love it! :D
That's the sound of Science.
(Wat!) 😝😂😂👌
Showed this video to my Fluid Mechanics' class and the teacher absolutely loved it (the explanation and Dianna)
Think I never knew this this is so amazing
I have an everyday physics theme for you: it's really hard to sink a balloon deep enough for it to compress to the right volume to match the density of the water around it. All of this is down right impossible to keep stable.
I am pretty sure that this effect is taught as part of the scuba diving training.
Thanks for these videos!!
My physics professor (Jay Mancini) is a huge fan and promotes PhysicsGirl! Super cool stuff. Thanks!
Can You do a video with the chemistry before the silme
Omg this happened once when I was making marshmellows! Perhaps it was the Gelatin turning the mixture into viscoelastic substance.
1:30 The book cover art for Dr. Seuss' Cat in the Hat
Wow, like gravitational frame-dragging in a bowl! Oh, and I so ship you and Derek Muller; you guys are so cute!
Air is a fluid too, like most usual gaz ... and i think with gaz, the same thing is happend and more easily understandable
look at fire with spinning things wich make some firetunnels and all
Think gaz is nearest non-newtonian fluid than water, really =)
(sorry for my poor english, hope u understand :p )
Always water for fluid, but water is not so usual as fluid, gaz are real fluid or better 'models' for fluids than water ... :)
kiss, love u ♥
For absolutely no reason I would like to see a video on the physics involved in storming a medieval castle.
That was informative and enjoyable. :)
I heard somewhere that every mix with liquid can be called non newtonian in specific environment.
So i wander, if you can swirl like this with liquid oxygen with ex. magnet rod :P
I think that would be dope if it works :D
5:14 Cute. I am in love.
1:02 IT CLIMBS INTO MY BELLY THO!!
Paul Paulson - 2018-10-12
"Now, say my name!"
"Weissenberg"
"You're goddamn right"