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- เผยแพร่เมื่อ 26 ก.ย. 2024
- The great Greek scientist Archimedes’ “eureka” moment is quite popular. Why did Archimedes get so excited about his thought experiment? What was the concept he deduced while he was taking a bath? More importantly, did Archimedes solve his king’s crown problem using an immersing experiment or a float balance?
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Finally!! I understand it now. This is the first time an explanation has included the weight balance - I've always been confused by previous explanations using only volume. Excellent.
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Actually the key word that was not mentioned in this video is density. Gold have higher density than silver. If the crown and the lump of gold have the same weight, and the both are pure gold then they equal each other in the water, if not then the density is different and the side that has higher density will sink. Both sides have same weight but different density.
Yaaaa
the funny thing is you actually have to mix silver with the gold because pure gold dulls quickly without alloying with other metals due to its softness.
True but the Smith have yo follow the client request. Which means if he request pure gold, then he has to follow such order. If he mix in silver into a gold, then it would mean he break the contract.
@@jomarcentermjm there is also the simple answer if they asked "did you use only gold" and they lie and say yes and are found out to have lied I have no pity for the craftsman
@@sallem5844 better to attempt to explain your craft to the client. If you're lucky he'll appreciate the knowledge!
You meant bend/dent as gold won't tarnish easily
@@sallem5844 a pure gold crown would have buckled and dulled due to microscratches within weeks which would upset the king so the craftsman is a victim either way
I have started learning this concept when I was 15 now at the age of 36 I could say I have got a clear idea.. Thanks
Thank to school and teachers... That took so long to understand the comcept
Excellent video on the topic and for the difficult problem of Archimedes, with its historical reference! Good to be used in the teaching and learning process. Bravo!
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The best animated lesson, perfect teaching
Beautiful Explanation! I did not understand this when I saw other videos. This video cleared all my doubts. Thank you so much!
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th-cam.com/video/mU3tSqkMeO4/w-d-xo.html
Exactly, this happened with me too.
Amount of water displaced is dependent on the shape right ? Since the lumped mass and crown is of different shapes , the amount of water displaced will be different and hence the buoyancy force...Then how could he relate purity with buoyancy force ? Can somebody help me to understand this ?
The shape doesn’t matter if both objects are solid and fully submerged. The reason a boat floats is because it is not solid. Rather, there is a portion of the boat filled with air that is below the water level. Therefore, some of the water being displaced is due to the volume of air. When you submerge a crown or lump of gold, there is no water that is being displaced due to air regardless of its shape.
amazing 👏 It's a wonderful explanation, I'm trying to show it to my classmates at school 🏫
Great thanks! Presumably if a fluid was used that was sufficiently dense that the crown did not sink, the test could have been completed successfully by comparing the volumes of the displaced fluids, and the balance could have been dispensed with?
What kind of fluid? Mercury?
@@BiglerSakura : Just about have to be... that could mess with parts of his crown! 🥴
@@PiefacePete46 it could add some lively animated features to its design :)
Nope. If the fluid was dense enough to cause the crown and gold lump to float, and both weighed the same, they would both displace the same amount of fluid. Or in simple terms, a floating object displaces its own weight of the fluid it's floating in.
I'm wondering how the shape of the object would affect the buoyancy force, since it needs to have the water exerting a pressure ? Since the water needs to actually exert a pression on the surface of the object, surely are there some specific shapes that may affect the effect ?
Good question
@@SkillShooter88
I already tried with a disk (put in water) and cut a triangle in it : the empty side (the triangle) tend to go on the side of the disk.
However, if I cut a long rectangle (going from center to the edge), then the empty rectangle goes up to the top side (it stays vertical).
@@En_theo i dont understand. How can the shape that you cut into the disk move?
There are two things to remember when a body is under water . The center of gravity and the center of buoyancy. It will tilt in the direction of the center of gravity at the bottom and center of buoyancy on top. The shape of the object determines how it rotates.
@@keanhor84
You're right, whatever results I obtain were because the object didn't have a well-spread mass, one side seemed more dense than the other.
Best video on the subject. Please make more videos
Wonderful ❤️
Best explanation I've ever heard.
Would an air bubble not make it float but not change the weight?
Yea I remember my 6th grade science teacher explaining this in 1970 but didn’t go as far as the balance, just the displacement. Always wondered how it could be accurate enough to warrant whacking the crown makers head off. NOW I got it!!!
All the times I've heard this principle the balance part is totally new to me.
Thank You so much; I had to write a skit on this topic. This made my work so easy.
With out watching the video, I would tackle this problem with displacement. Then I would get an amount of pure gold that equals the liquid displacement of the crown. I would then weigh the crown vs the equal amount of pure gold. I'm not sure if there are flaws in my reasoning other than if a heavier substitute over silver was used I.E. lead. I'm curious to see how close I was to the actual method or if I am missing some other variables in my attack method.
nobody asked
*****And that was the beginning of the perpetual motion machine that runs forever on Superfluids, very good.
But what about the shape? Does it have no effects on buyency?
If it catches bubbles of air then yes, otherwise no.
From my childhood I listened the "Eureka" story. But now I understood it. Thanks Sabins
Perfect!
Could I get a link to the assistant dipping the wooden block into the aquarium?
If a flat sheet is immersed in the water horizontally, then vertically, they will both weigh the same (according to Archimedes' principle). Intuitively, the horizontal sheet should weigh less, because there's a larger area for the upthrust to "push" up on. This doesn't happen. I know mathematically why, but it still seems counter intuitive. Can anyone suggest an answer to this conceptual paradox? Please don't explain the volume, density, gravity and upthrust calculations -I understand the calculations.
Because the downthrust gets bigger the same number of times.
Why do u think it should weight less? Since weight = mass x gravitational field strength, if you don’t change these 2 quantities then weight will be constant. Weight doesn’t depend on orientation. It just means to float, buoyancy force must balance the weight which is constant. In horizontal orientation, with larger base area, it will float with lesser depth. U can try this with plasticine of same mass. U mould it flat it will float. U crush it into a ball it will sink.
@@tand9854 I know you're right, (and the explanation is "correct", I just don't know why you're right! We still go back to the "upthrust" situation. A sufficiently heavy needle would be subject to the same effects . I just don't see how there could be any upthrust on it.
That would be drag acting which is something seperate
@@NoosaHeads same upthrust different drag
Great job, thanks!
An excellent historically accurate presentation of what had occurred; but whatever happened to the metal smith that was caught cheating king?
Executed 😂
They say they let him go
Great explanation. Thank you.
Thanks sir
Do u make this based on real story of archimedes?
I do not understand because, what if the gold smith made air pockets into the crown, to make it bigger without making it heavier so it is more confotable to wear? maybe he was not smart enough to argure that? or do I not understand something here?
Rest in peace, Goldsmith.
Один из сплавов золота и серебра называется Электрон
Потерять голову из-за электрона, это эпично..
Cool...make more videos 🔥
EUREKA - THANKS ! ! !
🙂 😎 👍
Great work
At that time of Eureka , He was 22 years old, my 22 years old was useless to play play station 2 , not inventing something amazing hahaha
We've lost a lot hope for the future thats why
@@FreelancerFreak archmedes cannot play ps2 but he can ......
Bhai hum to hilane ke kam ke liye bane hai
It is the fault of the society. And my dad never gives me anything. I am 42 and still poor. My brother studied and got a vacancy in musical field. There are no opportunities. We need someone to put us study even at home
I don't know where do you live but if you are from subcontinent (where I live) or Africa or any other developing country then I would say that it is our poor education system, unaffordable educational stuff and gender segregation that prevents us from learning, discovering or inventing something.
Can you please explain WHAT IS THE ESSENCE OF ENERGY DENSITY AND SELF ENERGY in the topic of electrostatics and capacitance!
Thanks a lot for explaining this i never learnt this in school and clg just knew the name of this.
سورة الواقعةth-cam.com/video/mU3tSqkMeO4/w-d-xo.html
Great
Thank you
When i was studying elementary Physics over 20 years ago, the lecturer said that the amount of gold was calculated that had been stolen and replaced with a less valuable metal , that amount was melted down and poured down the throat of the metalsmith who did not survive the ordeal !
Question? If you put a block of wood in the deepest part of the Mariana trench would the pressure of the water keep it from floating up?
Anything past its crush depth will remain submerged. Be it a submarine, a watertight watch, a piece of poliurethane or a piece of wood. Millions of tons of water will squeeze all the air from the wood.
@@isekaiexpress9450 very cool. Thank you
Funny how you phrase it at 2:20, as if Archimedes wasn’t alive two millennia before “classical” physicists
Very cool, but why I have got message that this video out 8 minutes later?
I have heard no one makes gold ornaments with pure gold
That is not true. Many many artisans in many many countries make gold ornaments with pure gold. I am wearing a pure gold ring made in Korea. Many countries do this.
I don't get it. If he has a block of gold the same size as the king gave to the goldsmith, couldn't he have just weighed the crown... and weighed the gold block and you would easily see the crown was lighter?
Nah the crown weighed the same as the gold block , because the goldsmith added some other lighter metal than gold to the crown to fill up the gold he stole . therefore resulting in a higher volume .
Volume and weight are different
@@petersoluwafemi7152 why higher volume. If the metal he mixed was lighter than original gold. Pls tell.
@@AyushRaj-jz2fj meaning he had to add more silver to balance out the gold. So they weighted the same.
@@AyushRaj-jz2fj but both in water it showed how much water it displaced from the crown to the gold brick
Nice video but the girl is very distracting :)
u perv
@@quanticansh it's humor dude, grow up.
I am from Peru(latam) and she was a distraction for me too.
How did Archimedes founds out that force applied by fluid is equal to the mass of fluid displaced in BCE
when there was no third law of newton
excellent explanation. which software you used for this video.
Any kind of 3d software can be used. Blender 3.0 is free
Negative mass would function as part of a space drive that "worked" in a way analogous to buoyancy
Volume is what's displacing water and not weight.
Best video
Great job
Interesting think about Archmedes principle...he probably didn't come up with it. Nearly all the famous Greek philosophers and scientists studied in Egypt before coming up with these ideas, and given this was long after the days of the pyramids, the Egyptians would have needed to know how these things were done in order to amhave built their civilization. Greece kind of came in, took the knowledge and the credit.
Sir continue the video for 1st and 2nd puc related theory,law,3d animination
Cool 😎
what is equilibrium-brium
❤️
Great video
Think about goldsmith mixed an heavier metal with lighter metal to keep it's density equal to gold
Well explained with modern concepts : weight, buyoancy, force, equilibrium etc. But Archimedes had none of these conceptual tools at his hands...
And the overflow of water from the tub is in contradiction of the experiment in which he submerged a scale with the crown at one side and the gold at the other side.
Regards.
2:23 “Archimedes’ buoyancy for was not a new law in physics…… It can be derived using classical physics.” Of course is was a new law. That was the whole point of the discovery. “Classical Physics” wasn’t comprehensively described and integrated until 1700 years later by Newton, (who you show to illustrate “Classical Physics”!).
Next time you visit a Jewellers shop to purchase a piece of Gold bring a small magnet to see if the item is attracted to the magnet, if it is ask to see other pieces.
What if the weight of the water is more than the buoyancy force it exerts? As if you put the wood on the bottom of the ocean, wouldn't the water be super heavy on it making it not able to float back up?
Water is nearly incompressible. Pressure increases, as the column of water above you pushes down. The weight of the column stays the same.
The heaviest water is underneath the wood, pushing up more than the lighter water on top, trying to hold it down.
☆
@@fjb4932 yeah but that's why I said the bottom of the ocean, if you have it against the bottom, there is no water below it, just rocks and stuff, there is only water on top of it
Bro how to make this type 2d animation cartoon
Nice video, but I think you should have made more clear why the buoyancy force is opposite to the weight.
The buoyancy force is opposite to the weight because it is caused by the displaced amount of water (which go up) so it is pressing down & the buoyant force pressing up so that the object will stay palanced in position
So what happened to the gold smith?!
I did not understand the crown thing.
We studied this while I was in scuba dive school.
That crown has a lot of places to catch air in.
What happened to the Lesics? You are the same guy, right?
My father told me this story when I was in class 6😄
煉金術原則就是等價交換。也是世界真理。只有賢者之石可以跳出等價交換的原則
Please can you a sponge and do the experiment?
❤❤❤
At eurika moment, archmidis was taking an open bath with cattles, he observed that when hi dips himself in water, the amount of water displaced is less as compared to the volume displaced by a "cow"
He ran the city without any dress. thats how he became famous..
4:53 "He realized that any object *surrounding a fluid* receives a force from the fluid..."
Didn't you mean "surrounded *by* a fluid"...???
And how the goldsmith head ended up on a fence post 😀
would the shape of the object not have an effect on water displacement
But doesnt the shape of the object matters as well? Because even thought if the objects are in equal weight, the shape of the object experiences different buoyancy force. Take a ship as an example and now imagine the same ship melted into a metal lump.
Ships float because there is alot of air inside.
Heavy metal weights alot, but weight of metal is not enough to push the ship size "aircube" under water.
What if the block is at the bottom of the tank and there is no force from the bottom? The block will still float to the top, but why?
Broo bouncy force will act in all part of the water thus the uptrust force is developed in block so the block will float if the block is of 1kg >than water density it will sink in water because density of block is more than density of water
@@aayushgupta700 "bouncy force" 😭😂
@@sadiaaa1373 buoyant force
That is how suction disks work.
He would have to give archimedies the same size lump of gold and have him make or have made a supervised duplicate for accurate tests?
Don't need a duplicate crown. Weigh the crown, and get a lump of gold of the same weight. If the crown is pure gold, the crown and lump would have the same volume. If silver was added to the crown, it would have a greater volume than the lump, and be more buoyant as shown in the balance in the water test.
Is this principle followed by ship manufacturer?
Yes.
Today gold is 80 times more expensive than silver but back when this rate was much lower. Was it actually worth it to cheat risking being executed?
Please punjabi medium main vi videos
The man who invented streaking
Additionally, we need to be thankful that he discovered this at age 22 and not later in life. Can you imagine a 60 year old running nude through the streets?
At 3:34 , how come volume can be more if silver is added to the crown compared to pure lump of gold?? A block say 1 *1*1(length, width, height) made of wood or iron have the same volume ( an iron block would have more mass considering its density though) but both would displace the same water right ??
So technically, a block of silver or a block of gold, if they are of the same shape, they would displace the same amount of water. Hence in short I couldn't understand how the crown riddle was solved :)
The weight of silver is less than gold. When immersed in water, the silver-gold mixture took up more room in the water, so the water buoyant force pushed the silver-gold mixture up on the balance.
@@eddarby469 the weight isn't factor here, its the volume right, as i said earlier, a block of size 1 *1*1 has same volume whatever its made up of, hence would displace same amount of water.
@@nagupilla8895 To make the comparison we need to take two measurements. First we weigh the crown. If the crown is light, it doesn't have the full volume of gold. If it is notably too heavy, it has "impurities" in it, like an alloying agent.
But assuming the metalsmith is smart, he will make sure the weight is right. Then, he thinks, the only to be caught substituting a small amount of silver for some gold is to melt down his finely crafted crown. He bets the will not do that.
Then Archemides uses displacement to check and the crown with a little silver displaces more water than the known sample of pure gold. I believe that is the essence of it. The king didn't want to ruin the beautiful crown if it was pure gold.
@@eddarby469 ok making sense now. Let me put it another way. Let's for the sake of argument assume silver weights half of gold. You ask me to make 2 gold coins of 1 inch diameter 2mm thick. Now one coin i make out of good BUT i make another with silver however this time i add enough silver so that it weighs exactly the same as the gold coin and in order to compensate for the dimensions, i compress it. I compress it enough to make both weight and dimensions match. After all it's metal, so i can do that. In this case how would you tell me the difference between the two coins ? ( Don't tell me the color would be different.. that's obvious.. :) )
Not those wood blocks.. the ones at the bottom 🤤
Bruh, You noticed archimedes running naked 😂😂😂😂😂😂😂😂😂😂😂😂😂 0:05 0:05 0:06
"Ciało zanurzone w ciele daje przyjemności wiele" 😉😊
Q.1 When was Archimedes Born Ans 1 Archimedes Was Born in the year 287 BC at Syracuse Q.2 What Was the Most Important City In Ancient Sicily Q.2 Ans The Most Important City Of Ancient Sicily was Syracuse Q3 Where Was Archimedes Educated? ans Archimedes Was Educated At The Royal School Of Alexandria In Egypt Byheart:for Today
...and then Caesar let the library of Alexandria and all its contents burn cinders. Archimedes died in Syracuse when the Romans eventually took the city which Archimedes had defended using machinery built on his own "principle of levers" and probably hundreds of other devices. He may have been working on way to concentrate the force of the Sun and amplify and direct the energy to ignite flammable enemy objects. His last resting place is still Siracusa.
What I learn from this video is , archimedes love running around naked
Mr sir told this story ,before teaching this archimedes principle
Eureka Eureka
Animated chick really doing it for me.
👌👏
the man’s expression when he saw archemides naked imao 😂
Ps: thank you I never understood this before you
What the animation is kind blowing out made the concept as easy as killing an ant
What happens If There Is no space between bottom of water and Object Then low pressure is on Liwer side 😅
better than my teachers