Visualization of Tidal Forces

[@udiprod]

Thanks everyone. I plan to invest more time in this channel, and hope to upload new videos really soon, in particular, some frequent requests and more. So see you soon.

[@AJ5]

Please never give up quality for quantity. You're a unique channel and I can see you being there at the top of science channels!

[@udiprod]

Thanks a lot. Yes, I'll do my best to stay at the same level.

[@Pokiwar]

@@udiprod Genuinely you have such quality content. I feel that, for me at least, animation provides a whole dimension of articulation that captures the attention in a way words can often fail to - and your's are of excellent quality. As the other said, quality over quantity any day. It makes the videos rewatchable and far more useful than excessive lower quality ones. Thank you sincerely for your time and effort, it assuredly does not go unnoticed

[@udiprod]

@@Pokiwar Thanks!

[@NomadicVoxel]

Man, you always manage to explain such complex things in a way a five year old can comprehend. Keep up the great work!

[@rajzakku8829]

A new video from udiprod? A surprise to be sure, but a welcome one.

[@Huntracony]

You create some of the best educational videos on the internet. I know I'll watch this video a lot, just like I did with the quantum physics video. Please never stop making them, once every other year is infinitely better than none.

[@Pingwn]

This video is a Christmas miracle!

[@PaulGreeve]

Thank you. This is hands down the best visual explanation of tidal forces I’ve ever seen. Though I did get a bit worried when you said, “… flat earth model…”

[@Marcox385]

I find oddly pleasant that the pause circle perfectly fits the earth figure when pressed (at least in touch devices). I'm really glad you're back :)

[@robtop9528]

I have waited 2 years

[@LORD-xg2ks]

"...explain using a flat model of the Earth..." Flat Earthers: Y E S

[@josemariatrueba4568]

Moon and Earth rotate around their common center of gravity which is moving continuously inside the earth's surface.

[@alandouglas2789]

Two years I’ve waited... and it was worth it after watching that amazing video

[@calvinrobinson1649]

It's the very best explanation of this topic that I ever heard. Thanks. It would bec even clearer if you change the term "fictious force" to something like "lagging force" because that lagging concept really tipped the scale for me from not understanding to understanding.

[@wavydaveyparker]

What an interesting comment, and I totally agree. Thanks. Whatever makes it easier for someone to gain an understanding of a particular topic in science, is a very useful tool to have in your possession, as long as it agrees with the observational data. However, why not save yourself the trouble of inventing more fictitious names, and just call it the "centrifugal force." A *real* force that only appears in an accelerated frame of reference, in exactly the same way that the so-called force of gravity does. Albeit for the one proviso, that it acts in the opposite direction to the aforementioned force. That's what Sir Isaac Newton would've done, and I wouldn't want to disagree with him, would you? All the best.

[@enriquelopez4528]

Thank you for your added explanation. (The “fictitious force” is difficult (for me) to understand.) So, according to your explanation, the centrifugal force is a force that is pulling opposite to gravity which causes a bulge on the opposite side of the Earth because the water on that side is being pulled outwards? Is that correct? Or what if we imagine a string (gravity) pulling on the earth which causes it to become elongated, with or without any orbit involved-we could be pulling the earth in a straight line through space. This would cause a bulge on either side of the earth due to the elongation, though we wouldn’t necessarily call it a centrifugal force since the elongation would happen even in the absence of an orbit. If all points on the Earth are pulling towards the center, and an outside force pulls on the Earth, it will become somewhat elongated, and this will cause the water on the other side to be “pushed” out. I like the word you used, “lagging,” as that helps me to imagine that gravity might just pulling less on the far side water since it is further away. If this is the case, then the tide is always higher on the side closer to the moon? Also, no matter how I imagine this, it always seems more egg shaped than elongated, like hanging a water balloon from a string, unlike the images that are usually shown in these videos, which look closer to ovals. I like your explanation because the centrifugal force is easier for me to envision, and just feels more satisfying. But please consider my example where the earth is being pulled straight through space without any orbit directly towards a massive object. In this case, if the (slightly elongated) Earth is still rotating, would we experience tides? And if so, then I don’t think we would be able to say that they are caused by centrifugal forces.

[@enriquelopez4528]

Hi Wavy, I see that Marcos said lagging, not you. At any rate thank you both for your comments. I will keep watching the original video to try and get a better grasp. Have a good day.

[@wavydaveyparker]

Hi Enrique, I did read through your comment, but wasn't notified of its existence unfortunately. Probably, because it included the word centrifugal and apparently we don't like to accept the effect it has in orbital motion. You would both be very welcome to comment on my cartoon and continue the discussion if you're interested. Thank you for replying here.

[@the_mastermage]

this is hands down the best explanation of tidal forces, while also staying correct and not going to shorthand to just explain everything away due to centrifugal force. My Professor of planetary physics insisted on the centrifugal force being real and I was not convinced and now i know again why.

[@pianojay5146]

Perfect Christmas gift that I ever had ... !

[@goodluck6948]

i'm so glad you're coming back- the sorting videos were amazing! i'll definitely watch all the other ones after finishing those, this is awesome

[@thejbo777]

Yay new video!!! See you again in 1-3 more years!

[@Sam_596]

A udiprod video? Haley's comet must have come early. I remember watching these in middle school, and they're still making new ones now that I've graduated college and gotten a job. What legends.

[@enricobianchi4499]

Great explanation, I had no idea there was so much to it! Love the new narrator. I hope you're back in the mood for more new videos because they're fantastic!

[@Subhersive]

this channel is painfully underrated

[@lexinwonderland5741]

I feel like it's 2007 and I'm a kid watching the Science Channel again. Thanks, man, this content is fantastic. Keep it up!

[@thenomad9963]

This account is so unique in its presentations and so easy to follow the explanations!

[@WolfiePH]

Oh, haven't seen this channel in a while. Welcome back.

[@andreichirila3769]

For the first time in 2 years, udiprod uploaded a video.

[@chasemarangu]

i love how u can just "add a camera" or "decrease the moons mass"

[@chasemarangu]

@SQ38 correct

[@jackeea_]

What a christmas present, another Udiprod upload!

[@jc_777]

Hey udiprod! Welcome back. Your videos helped me pass Algorithm 101 back in college and your halting problem is simply amazing. Since you're back, I'd simply turn on the notification not to miss a single video. Thanks man!

[@nowhed]

A udiprod video! This is a once in a decade experience!

[@kayson971]

Just randomly ran into this channel and am loving it so far. Hope to see more videos!

[@leo848]

Finally a new video!

[@fim-43redeye31]

The legend is back! It's great to see you again!

[@henrycgs]

I was expecting a "it's caused by the moon pulling on the oceans!", but I was pleasantly surprised to see a much more detailed explanation!

[@vivekmishra007]

Return of the legend! Thank you for again uploading video it has been long time :)

[@GiulioDean]

I study Aerospace Engineering and this video is INCREDIBLE!

[@enthdegree]

this channel is so underrated omg

[@TimJSwan]

You are one of my favorite long term KZbinrs. I'm a fan till I get old.

[@agdhdhhrjrj]

Welcome back to KZbin!!!

[@aryeliberman5110]

Wow, I rewatched all of your videos... I totally forgot about you... Great video!! As always...

[@AJ5]

One must wait for high quality content!

[@shoudehuang1244]

The channel's alive!!!!!

[@theairaccumulator7144]

After 2 years, a new udiprod video has been given to us by the gods.

[@doctorstrange1108]

The best explanation I've seen so far!! Thanks a LOTTTT

[@RandumStuffRandumnes]

Nice video! Well done, entertaining, and informative. TIL I never really knew how tidal forces worked, but now I do!

[@-_Nuke_-]

This video is pure GOLD!

[@bassie7358]

He has returned!

[@bhaskar08]

Man you gotta keep uploading!!!

[@jfdezmtnez]

The perfect explanation for tidal forces.

[@mikev4621]

But this doesn't deal with the centrifugal effect of the barycentric spin of the Earth, which adds to the far side tidal bulge ( significantly)

[@eurovisioncyan9550]

Petition for Bogo sorting video ⬇️

[@pianojay5146]

Eurovision Cyan With full competition between bubble sort and Bogo sort!

[@cliffwilley3093]

I wonder how they would do it

[@paper2222]

Shadinpaw The Cat i think the robots would get one ball, replace it with another ball randomly

[@jaek7595]

should’ve been an april fools vid

[@professorbrainstorminmemef4779]

son of a- I was going to make a comment about this but you beat me to it. but srsly we need this to happen

[@jollytemplar3670]

Huzzah, udiprod has returned!

Oh my god I was rewatching this channel videos like two days ago! Niceeee

[@hyrulehero7834]

The return of the king

[@1everest84]

Thank you for this video! Great visuals and explanations! I’m reading Incandescence by Greg Egan and this video helped my understanding of it so much.

[@moved8575]

The return of the King

[@beetmacol2126]

Finally a new video! If you are going to be active again, will you upload more sorting algorithms and other computer logic videos? I loved it.

[@sayanghosh6996]

this channel is still alive?! wow Love your content btw

[@garr_inc]

Welcome back!

[@fadhlifirdaussulaiman1463]

I logged in to subscribe, your videos are so promising! I'd compare how easily I comprehend the video with others, they're made just how I'd cognitively comprehend sth.

[@skcho3]

Thank you very much, this clip is the best of best ! To Achieve What Nobody Else Has over hundreds of years.

[@seanimo8579]

This is one of the most entertaining, educational and underrated KZbin channels out there. Hope you grow to the likes of Captain Disillusion and Kurzgesagt soon.

[@Digit404]

Oh my God, he's back!

[@edgywilson7511]

The legend is back bois,

[@gauravm8152]

Hats off to you man for this awesome explanation

[@mahxylim7983]

FAnTasTic Video!! Even if you may didn't make more vids, I want to say thanks to you. This is a really good explanation about tidal forces! Better than what my professors taught!

[@k1ngjulien_]

Holy shit they uploaded, a Christmas miracle! Nice 👍

[@jettanat1351]

amazing video, best visualization ever!

[@pinguin4898]

this was a very entertaining visualisation

[@phukaoprommolmard5282]

They're back!

[@UCFc1XDsWoHaZmXom2KVxvuA]

This channel is crazy cool

[@LoraLoibu]

*they're back*

[@jacobdotcom5349]

Oh hey you're back

[@odingoa]

Great video! I want to understand why we need those fictitious forces when switching to a non-inertial frame of reference with the cameras.

[@wavydaveyparker]

With Udiprod’s permission, I’d like to attempt an answer for you, and then you might be kind enough to view my own “daft” little video and I’ll attempt to explain further? The viewpoint of the “cameras” has no effect on the observed phenomenon. The earth-moon system is definitely “accelerating” so, therefore, it is a non-inertial reference frame and must include the “apparent” forces. Regardless of whatever camera you want to view it with. Does that help? The “apparent” forces do not disappear just because you choose to view it through an inertial reference frame camera, but of course you (personally!) won’t feel the “apparent” forces because you’re now holding a inertial reference frame camera. So, I agree it does get confusing when you start mentioning reference frames?

[@quietsamurai1998]

I've been a space and physics nerd for years. I've never quite understood why there were two tidal bulges until seeing this video. It never really occurred to me that the earth would be accelerating towards the moon faster than the ocean on the opposite side of the earth from the moon.

[@josexrg]

welcome back!

[@a.yashwanth]

Finally after 2 years of silence.

[@rafaelmolinanavas8862]

I’ve realized that just with the title “Tidal Patterns”, its not easy to find they site I mentioned on my previous post. What I had posted on that site was: “Farther parts of the Earth are NOT SUFFICIENTLY attracted by the Moon in order to follow an orbit equal to the one of Earth´s C.M. (if they could move independently from the rest of the planet). Due to that, they try to get a farther orbit. They rest of they planet prevents that, exerting a "moonward" force. And those farther parts exert an opposite reaction force ... All those forces stretch farther solid Earth´s parts, and where water they so called hide tide bulge builds, trying to reach an equilibrium with own Earth´s attraction (not fully achievable due to they daily Earth´s quick rotation, what also is the cause of the some couple of hours gap between high tide meridian and Moon´s actual position). A "mirror" phenomenon happens at closer half of the Earth, because its parts are attracted by the Moon TOO MUCH for the average orbit, they try to get a closer orbit, but the rest of they planet prevents it ... “ And if anybody wants to see more about previous discussion, the link to mentioned KZbin site is: Tidal Patterns

[@WillToWinvlog]

Your non-inertial frame (1:33) is actually an inertial frame. To appear stationary amidst the uniform gravity field would actually require energy, and it would be the non-inertial frame. Great video nonetheless, thank you!

[@SpencerTwiddy]

Right, inert means still. The one on the left is still, the one on the right is moving (requires energy)

[@VidarrKerr]

It confused me for a second, then I realized it was just a mistake.

[@bewareofyikes]

if you are saying that non inertial frame seems to not accelerating from the depiction, then yes. but it is one of the possible ways to show this phenomenon in a video. energy requirement thing you said sounds irrelevant, i think.

[@wavydaveyparker]

​​@@bewareofyikes Hi Sergio, seeing as you commented in a thread that's 4 years old, hoping someone would reply! 😂 The energy requirement is relevant. The unfortunate mistake that Udiprod made here, was with the definition of an *Inertial* frame. An inertial frame does *not* include any forces, be they real or unreal. Analysing the tidal forces in an inertial frame is what's irrelevant here, I think.

[@146fallon]

so ... is this channel not dead?

[@insightfulgarbage]

It's cranking videos at the same rate it always has been, why would it be dead ?

[@thejbo777]

Ori Exactly, at a rate about 0.00000003 Hz

[@anselmschueler]

@@thejbo777 At precisely 0.00000003171 Hz

[@thejbo777]

schuelermine you right i kept only one sig fig tho

[@davineves8529]

I wonder what next year's video will be, hope is another sorting one, with bogus or maybe goblin.

[@lockdownstudies2401]

He predicted the _Worldwide_ Coronavirus with that Coronavirus looking Earth!

[@bhaskar08]

Love your videos!

[@the_sophile]

WOW! I never thought that the fictitious force cancels out the real force so that the objects does not accelerate in the non inertial frame

[@ChrisDarjany]

Great Video.

[@kama2106]

great video

[@mhd_4800]

Ohhh u're back on KZbin !!! Ohoaaaaa

[@konomi9205]

why was i recommended a video with 60 views?

[@Huntracony]

I don't know, but aren't you glad?

[@offchan]

probably because this channel posted very good content a few years ago and they stopped uploading for awhile

[@cliffwilley3093]

Because people love it

[@insightfulgarbage]

KZbin's algorithms try to predicts which videos will be interesting based on how previous videos from the same uploader have worked, based on the videos you've seen, the video length etc.

[@bewareofyikes]

😂😂😂

[@Ragnaroc25]

Hi Udiprod. Thanks for your video. There is one question which is still puzzling me. In the case of a full moon the tidal forces of the sun and moon exerted on the solid earth are in opposite direction. Because of that we should expect a reduce bulges sizes in a full moon state than in a new moon state? (for the same eart sun and earth moon distance in both cases). I think I miss something but I Don t know what?

[@udiprod]

You are basically right: when the moon and the sun align the two tides build up and we get a larger tide. But the moon by itself causes bulges on both sides, also the sun. So this alignment happens both in a full moon and in a new moon. It's called a "Spring tide". Read about it here: en.wikipedia.org/wiki/Tide#Range_variation:_springs_and_neaps

[@Kataquax]

great video :)

[@andreichirila3769]

I don't know if Udiprod can continue the series with sorting algorithms. I don't understand how shell sort works.

[@udiprod]

Yes, the sorting series will continue soon. Shell sort is very interesting, and it's high on my list of things to do, so stay tuned.

[@andreichirila3769]

@@udiprod Ok.

[@VidarrKerr]

This was great! When will you add the moon? I was hoping that it was added again near the end, but it just ended with the earth and sun.

[@udiprod]

Thanks! What do you mean? There's a segment about the moon at 7:30.

[@repdoderpo1234]

Cool video :) -Felix, the German

[@tanchienhao]

Came from the MIP*=RE video and i wish the algorithm led me to your channel 4 days earlief because i just had an exam qn on this hahaha.. what software do u use btw? Great animations and explanation

[@udiprod]

Thanks! I'm using Maya.

[@seshansham546]

Hi your videos are so good and what are the softwares used.

[@udiprod]

Thanks! I'm using Maya.

[@z-beeblebrox]

5:30 "The left side is somewhat bigger because of how the graph is curving...let's compute it's first and second derivatives" WHOA NOW baby, I'm just not ready for that kind of commitment

[@mybluemars]

This is an amazing explanation of tidal forces! How large does an object have to be in order to experience tidal forces? Does an atom experience tidal force?

[@hinsonhau9129]

Yes i suppose

[@zet1787]

Thanks, it helped a lot

[@Darthvanger]

OMG it finally makes sense! In university we would just write down the definitions, and then do some crazy math xD

[@replicaacliper]

WHOA HE UPLOADED

[@aleksitjvladica.]

Wow, they are back BOIS!

[@forwhomitmayconcern]

Can you please tell how do you guys do your videos? Like, record yourselves making one video. It would be useful, at least, for me. =)

[@geraldopontes37]

Excelent! I loved! Thanks you!

[@wavydaveyparker]

Hello Geraldo, yes this is excellent! And absolutely correct. That other cartoon you just watched is wrong, because it doesn’t acknowledge the existence of the “apparent” forces or the barycentre. The Earth doesn’t get moved towards the Moon in a straight line, filling bulges and leaving water behind. It actually moves in an orbit around the barycentre, and the far side tide is caused by a “fictitious” force, as is clearly shown in this video. The first section of this video is illustrating the effect of the “tidal force” which is due to a combination of gravity and inertia. And if that effect was allowed to continue then, the earth would collide with the moon in just over two days, so it doesn’t really give us much time to enjoy our daily tides. Thank you!

[@jimmy_oh0604]

I'm pretty sure that if you put continuous efforts on your work, you could able to get equal or better position than kurzgesagt channel! Plus, i really love your step by step explanation. it makes me better to understand and able to memorize it much longer time. There's not much i could do for you right now, except subscribe your channel and like every videos you made. however, if you make a patreon account, i will gladly be your supporter. I really hope you to be successful as a educational or scientific channel, so that i could see much more interesting videos! :) p.s : sorry for my poor english skills. I hope you get my message across.

[@udiprod]

Thanks a lot :) I'm considering opening a patreon account, though haven't decided yet. Anyway I hope to post more videos as soon as I can.