SLOW MOTION SCIENCE! Ferrofluid dropping on magnet
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- เผยแพร่เมื่อ 26 ธ.ค. 2017
- See ferrofluid falling on a magnet filmed at 1000fps. How does the science of falling ferrofluid droplets mimic speghettification while falling into a black hole?
Learn more at curiositystream.com/physicsgirl
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Creator: Dianna Cowern
Editor: Jabril Ashe
Animations: Kyle Norby
Research: Sophia Chen
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4:24 the quality content we subscribe for.
her limbs look slightly spaghettified xD
+lizard king
I know right :D I love how both her parents are just looking at her like.. WTF are you doing? xD
"What else would you film besides a ferrofluid?" Maybe how you smash a gingerbread mobile home
But only the non burnt down kind
oh Lord
Exactly she can do that too
yes
I think "Happy Physicsing" is perfect; don't change it!
YEAH!!!!!
Rodney Owen this
Indeed, it's now the channel brand, and we love it :) .
Agreed keep "happy physicsing"
Things would not be the same without "Happy Physicsing". Grammar is unimportant in this case.
A soon as you mentioned black holes I knew I had to be looking for spaghettification :D
Pablo M - I think we all did.
Ha lol she spelt it wrong in the description
"Happy Physicsing" may make no sense but we all know that and the result is it's pretty cool. Don't change it, please.
i agree, keep the "Happy physicsing"! and maybe spell it with a 'k' for extra koolness :)
I'm almost on favor of change that. As a viewer I love that slogan, it's like the signature of Diana, but is a pain in the tongue when i'm translating subtitles to spanish, lol. "Felices Físicas" is the best I could came up with.
Actually there's sth funny about it. As a forgein speaker it somehow makes sense :)
And... I love the slogan
RadioMax "Felices Físicas" literally just means "happy physicists" lmao
I know, still makes no sense in spanish, so it's a draw... I guess XD
Came for cool physics, stayed for 4:24
That look on mom's face though. "this is not my child.." maybe. LOL
lol
Lets get physic-cool
they are like "what did we do wrong ?"
I think you meant: they are like "wow, we did alright!"
With the magnet, the ferrofluid had no recoil when it hit the surface, it just spread out. Kinda like nothing escapes a black hole once it enters one.
actually the same happens with gravity, if you try that in a planet with stronger gravity the same will happen. you could actually make the droplet orbit the magnet as far as I know. the part of not escaping the blackhole is a little more extreme than that... it would be as if the droplet when hitting the surface of the plate instead of spreading or bouncing back, it would just pass right through it and freeze in time. the difference of magnet and gravity is that the force gradient of the magnetism is way stronger than gravity.
Danilo Oliveira True that it would freeze in time but that would be to an external observer. The actual droplet would pass on through, until spaghettification eventually did it's thing. Every black hole causes spaghettification. It just depends on the distance (of the object) to the singularity.
Danilo Oliveira Also, orbiting a magnet is quite difficult. There is only one(or two?) particular paths around which the orbit can be stable, assuming eddy currents don't eat up its velocity. The two possible orbits i can think of are a perfectly equitorial and a perfectly polar orbit.
it's also really cool how the splashes reverse course at an angle, almost like a rubber band rebounding; rather than the usual hyperbolic trajectory away from the center of the splash.
I love the energy and the genuine fascination for how our world works. You're an inspiration for so many young people to grab hold of and fall in love with science. Keep up the great work with this channel and thank you for making it so wonderful!
What an amazing host, had me engaged from start to finish. How she has less than a million subs is mind boggling.
She has great content but talks too fast for me to really enjoy. I think she has a faster processor than I do.
This is interesting to see, I found this video sluggish and boring. I had to skip through a lot of her rambling to see the drops and didn't even get to learn any cool science stuff because it felt like she was talking at the pace of a 6 year old. (Expected since "PBS" is literally in the intro but this video could have been a lot better)
fyi--the keys adjust the playback speed
Yep
Stigstigster If you can’t keep up with Diane, decrease the play speed to 0.75 of a normal speed, there is button behind the three dots button at the upper right corner.
Don't change "happy physicsing". That's you'r slogan. Don't change it!
"Happy physicsing" makes perfect sense, keep it!
Also I love it, so there's that.
Your enthusiasm is really contagious. If only my physics teachers would've been so motivating.
Without the magnet the slash like expanded then srunk until it hit
And the magnet makes it expand only along certain lines ignoring the viscosity
Nator interesting didn’t notice that 😁
Yeah I say that too. It didn't seem to break off.
Nobody mentioning the unnatural splashing without the magnet 2:13? The ferrofluid splashes up and outward but then it stops expanding out and it even looks like it returns a bit inward...
High surface tension? Lenz's law effect of the ferrofluid with itself?
Thank you, watched that oddity repeatedly on slo-mo thinking "what the..."
The tide model and explanation at 4:00 is absolutely terrific.
Love William, and I love this channel! So happy my two favorite people got to collaborate!!
2:48 I noticed that when the magnet was directly below the plate, a ring and spokes were formed rather than a disc.
Hey Diana, where do you go for fluid dynamics conferences? I studied Fluid Dynamics in NZ, but we don't have any conferences like that (that I know of)
Love your enthusiasm so much! I wish I had a physics teacher like you when i was in school. Keep being awesome, and thanks for your videos!
I love your energy and excitement. I can tell I’m going to learn a lot from your vids! Thanks!!
Spaghettification? Great, now i'm hungry
i could see the shear thickening effect stop at once at 2:35 on the side
It might be because the video was cut and edited together. Maybe Possibly. Please don't hit me with an internet stick.
I grew up literally on the Chesapeake bay (my dad was a water man). The tidal forces of having the same high tide on the opposite side of the earth now makes sense. Thank you for the information and as always your enthusiasm. Its contagious. and oh please don't ever change "happy physicsing" We need people to see that there is excitement and even joy in studying these things.
Your excitement speaking about these thing makes me excited too even though I can't understand half of it. Keep up the great work is all I can say!
I always think of the superpositioning of earth and moon gravity field distorting the normal vector. Along the earth-moon axis, the gravity pulling down just becomes lower at the moon side and higher at the opposite side, but the tide happening at these two places has not to do with that effect, but with the effect, the distortion has around the earth at the sides. The normal vector there does not go straight to earth core anymore, it's slightly rotated or rather tilted and thus water flows to build the tide "mountains" and it flows towards the still normal vector, but that much more depends on the changed orientation of the gravitation normals than their magnitude. If you look at the differential field you get when subtracting moon from earth gravity, you can see the difference vectors go horizontally to earth surface at four angles around the earth. These are contributing to the cycle of four tides you normally have per day, at these four places water flows away and later arrives in the places where the differential field has no reorientating effect. There is an obvious lag time water needs to flow.
The sum of gravity fields mainly influences the geometry of the field and changes where "down" is and then this change lets water flow. The effect of gravity along earth is very small. The earth is so far from the moon that it doesn't go through such a high gradient and difference as the magnetic field strength, so that can't explain earth oceans acting like a giant drop of water, but you are right about the much stronger gravity gradient near a black hole.
For more details you might look into this: www.jalc.edu/mikolajsawicki/tides_new2.pdf It doesn't pick up my idea about the changed normals of the gravitational fields, but it comes to a conclusion of a time lag of tides with moon positions, that can also be explained by the time it takes the water to flow along the changing gravitation normals. It also explains the differences of high and low tide but it also tells about how local geometry and ocean depth contribute to sites having only one tide per day and other anomalies. Besides that, the motivation of the paper is to demystify the tidal effect on the human body or even a glass of water and it does that very well.
That's rather addressed to Dianna Cowern, but the paper has some entertaining moments, too, putting things into perspective.
Last time I was this early, William's house was still not burnt :(
Ye.
you just went too fast...
too soon dude
Sorry about that
I was impressed with how the splash back of the ferrofluid happened so quickly compared to other fluids later in the video. Great video!
I was going to leave a comment saying : "No, don't change your 'Happy physicsing' motto". Then I realised its nearly three years ago and you haven't changed it. I'm so glad! As others have said, it's like your trademark, it defines your channel and your fun way of making science fascinating. Keep up the good work!
i wonder what happens if you COMBINE FERROFLUID WITH AN *ACOUSTIC LEVITATOR **_OHH MY G_*
I saw something which I thing is weird.
Normally, when a drop of a liquid falls, it splashes but the ferrofluid, when the magnet was not there, after splashing a little, came back to its original position, the point of contact.
What I was expecting in the first case happened in the second when the magnet was there! I thought that due to the pull of the magnetic force, the ferrofluid will not bounce or splash but it did!
I always love your nerdy enthusiasm. Go Physics!
I love your channel, it's always really awesome and you're so fun in your videos. You're awesome!
YOU UPLOADED IT THE EXACT SAME TIME AS WILL :D YAY!
but I LOVE “happy physicsing!”
i have no idea how one would spell that, but i still love it as a slogan!
Contagious Physics!
It's all in the Passion of the Presenting Professor!!
Brava!!!
This was one of your exciting video...Love your videos and thank you for my physics lessons...which you were my instructor when I was in school...I would have study more...keep up the FANTASTIC work.
Sweet video :D x
My parents went to Hawaii and the roosters were _loud. _*_I'M A ROOSTER!!!_* at 6 in the morning.
Philip Green PHILLIIIIIIPPP!!!!!!
Hi
3:19 Ah.... the beauty of the inverse square law.
Surya don't get what, this godt to do with the inverse square law? 🤔
Strength of magnetic field felt by the ferrofluid increases exponentially as the ferrofluid drop gets closer to the magnet, causing elongation of the droplet
OMG this was sooo cool! I love seeing videos of ferrofluid and i really liked watching this. You are making me see physics with different eyes. Thank you!
Love this video, it was so neat to see the ferrofluid with the magnet directly underneath it form spokes radiating outwards until it formed the edge of the drop.
I Wished U Had Used A Stronger Magnet... To See If We Could Somehow Break The Drop(Correct Me If It Is Not Possible)
Shashwat Gupta I don’t know about magnetism but with black holes a smaller black hole has a larger chance of spaghettification since the gradient of gravitation force is higher over a set distance. In other words, falling into a large black hole would just crush you.
It seems counterintuitive but i think a smaller magnetic field is required to rip apart the drop. Small but strong. I figure surface tension or something similar plays into the fact that it doesn’t break up.
“Like a football, the American kind.”
Thank you.
Awesome video, and great involvement of your folks
you blow my mind..this is the stuff that inspires me study more of physics!
Tides are tricky...
Oceans have tides but lakes, bathtubs and cups of coffee don't.
What Physics Teachers Get Wrong About Tides! | Space Time | PBS Digital Studios
th-cam.com/video/pwChk4S99i4/w-d-xo.html
2:22 nickelodeon logo
The happiness when the phenomenal Physics Girl uploads a new interesting video. How awesome is that? Mostly mindblowing crazy awesome experiments.
Keep up the good work Diana..
Oh nooo..., don’t change the slogan! What do you mean “makes no sense”? Verbing nouns is pretty vernacular for a long time now, and it makes perfect sense. You think “have a happy time while studying physics” makes better sense? Pah!
Nooo don’t stop saying “happy physics-ing”!!!!! 😆👌🏻
Butterfly Flyaway yes she should keep it, I love it :D
Physics Girl always brightens up my day. Haven’t seen one vid from her I didn’t like
I love your constant excitement and energy thought the video and it tells me that your excited about what you are telling me and it makes me want to listen to what you are saying
William Osman SQUAD?
Here!
Prisent.
Yeee
Your explanation for how tides work is wrong!! Check out this PBS Digital Studios Space Time video from a couple of years ago:
th-cam.com/video/pwChk4S99i4/w-d-xo.html
easily one of the best slowmo footage eva!!!! nuff said
"Happy Physicsing" works just fine. More importantly, I just love your enthusiasm! I hope you never lose that.
Spaghettification is my new favorite word!
One of the first views and before 1k views
We love you, Diana! Thanks for always inspiring us!❤
Dianna, thank you for your inspiring excitement about physics. You are truly the happy physicser!
So with a big enough magnet, you wouldn't get spaghettification as is the case with supermassive black holes
Surya Are you thinking that the spaghettification is happening after contact with the magnet?
David Kenny No. In supermassive black holes the difference in gravity is really small between head and toe until you're long past the event horizon(assuming you're falling in one).
Ok, I was putting your comment before this one together (as a continuation of one thought).
time to fire up the MRI
The larger size of magnet breaks the analogy. The reason for the lower tidal forces at the event horizon of a supermassive black hole is because you are further from the singularity, reducing the gravitational gradient over any two particular radial distances from the event horizon (notice that I didn't say from the singularity).
Kip Thorne explains this well in the beginning of _Black Holes and Time Warps_
Why haven't we done an episode together ??
because you're not big enough (that's what she said)
Nevan Masterson
Size matters!
That’s very true you have a high speed camera in all seriousness please make a video together
I love your passion for your field.
I love how much you excited when you talking about science
Physics girl crush😍
woah!!
It's just hormones.
She's really kinda cute.....like physics....
Please, Don't judge me
Shahnish Sharma no judgement here.
Shahnish Sharma judge you? I agree with you
As if physics make sense (7:00)
:D
Umm... what?
I get it... 😎
I always wondered what this looked like thanks Diana 😊
Wow, if only everyone had that much energy in life. Amazing videos, clear excellent expansions, really invigorating considering that the topic bores most people to sleep. Thanks!
0 dislikes. Yay!
For sure
I wish I was as excited about anything as Dianna is about ferro fluid and magnets.
I love you physics girl!! Thanks for Physics Mom and Dad for making you, so you can make videos like this!!!!
Tks so much for explaining me tidal forces, analogies for me are the best way to explain things.
I enjoy these physics girl episodes. Dianna is highly knowledgeable on many of things...
Happy physicsing is just awesome.... I scream along with you when u say it.. please don't change it
I'm a fan of "Happy Physicsing!" I think it's awesome! I also like how you get your guests to say it with you at the end.
Rolling shutter probably plays a part in the shape of the droplets. Smarter Every Day did an excellent video on the rolling shutter effect.
William Osman! Heck yes, best duo!
love your channel!!
You need more subscribers. You are so genuine.
An excellent description of tides - and I grew up beside the Bay of Fundy, 50 foot tides during a full moon
This was awesomeness. Earned my like and sub. I look forward to more
Great video, thanks so much!!
So very cool, thanks for sharing!
Happy Physicsing!!!
I think pausing more with less words...is all you need to more views..love it.
.
To avoid getting a magnet "dirty with filings/ferrofluid ", I always put the magnet in a plastic baggie. It has no effect on the field, but can easily be removed cleanly separating the filings.
Omg this is sooo good! Awesome video!!
The thing I noticed is that when the magnet is directly below the plate, when it splashed, it formed a sphere, presumably where the magnet is. It's strange that it didn't do that with the other one with magnets, though.
Wow this is a really good explanation of tidal forces ! made it very clear to me
You are an educational hoot! Keep up the good work!!
Thank you so much... That was awesome... More than Informative
I love "Happy Physicsing" It sounds more active than "Happy Observing and describing physical phenomena" and it clearly communicates a specific idea. That idea being physics is something people do. The universe isn't going to describe itself, so we get to!
“Happy Physicsing” is perfect. Don’t change. Great video. #FerroFluid is awesome!
Thanks for the video! I really appreciate it!
Keep Happy Physics-ing!
It makes it all sound way more awesome and intteresting and exciting.
The fact that the Ferrofluid is accelerating in a non-uniform magnetic field has to also cause effects within the Ferrofluid itself, it starts to self interact in a manner similar to the more typical spike effect that you see when it is at rest in the field.
Holy crap, this might be my new favorite -- I can't believe how accessible it is to demonstrate spaghettification!!! Great work, Diana!!!
You are amazing, being the first person to make me understand tides !
In the 1 inch setup the fluid was affected with uneven forces so it came under pressure and splashed every where, be when the magnet was below it, the force was concentrated on a specific spot, that's what I noticed
Verbing things that aren't verbs is my jam. Happy Psychicsing is the best thing ever.
Has anyone ever told you how “forceful” and “energetic” you are when “moving” to “matters” that “deal” in SCIENCE?!! I’d say you are the small drop that clings to the craft while propelling, propelling, propelling your craft placidly down the solution, (becoming) ecstatic ecstatic ecstatic ecstatic, existence is but an illusion. Never stop learning. Love your show! Signed just a sailor.... stay true to course. ;)