Who Can Explain This

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Physics, Experiments, Cool

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Some cool physics experiment

  1. By: bubbawolf2
  2. Categories Science & Tech
  3. Views 1,417,528
  4. Added :26-Dec-05
Comments on Who Can Explain This
Other comments on this video
  • Super conductivity

    This is an excellent demo of super conductivity. The liquid is liquid nitrogen. The disk is a magnet. The black block is the super conducting (SC) material (but becomes SC only below its critical temperature, somewhat higher than liquid nitrogen).

    When warm, the block has no particular magnetic / electric properties. When cooled, it becomes a SC. One of the properties of a SC is that magnetic fields can be pinned in place in the SC.

    A moving magnetic field generates eddie currents within conductors, and can be felt as a resistance to relative motion. In most materials, this current quickly decays due to electrical resistance. In SC, eddie currents do not decay, but instead will tend to hold the magnetic field in place.

    By brettcgb 1135716691
    • You can SIMILAR things at home

      Buy one of those round or spherical supermagnets (they are cheap, but NOT A TOY) online. Get a THICK copper tube. The thicker the wall, the better. Drop the magnet down the tube. Notice 2 things: It takes longer than it "should" for the magnet to fall out the other side. The magnet never touches the side.

      You can get a little levitation on just a copper block (haven't tried it yet) and a super magnet. I bought a bunch because they are so useful in the STEEL garage I have, as well as fun. They are nickel PLATED ceramic and brittle. You let 2 big ones slam together and you have instant shrapnel moving at VERY high speeds.
      Even with a block of ROOM temperature copper you will notice the effect. As the magnet approaches, it creates micro-currents that act as a opposing (same pole) electromagnet which will make the magnet feel as if it is in quicksand if you try to scoot it around the surface, roll it off by tilting or even settle down slowly if dropped on the copper.

      By Paladin_Z06 1139895944
    • To #1

      It's the flux trapping effect! ;)

      By lolqw 1196270162
    • gimme some liquid nitrogen

      i really need it for my new video with my guinea-pig

      By Victoria Schattauer 1194365347
    • WHERE

      do u find SC materials?

      By frostyheavens 1146565670
    • You might find them at

      Edmund Scientific at www. Scientifics Online. com. I know they're not all that hard to find. Google "super conductivity".

      (Sometimes, you need words longer than 15 letters/4 syllables)

      By brettcgb 1146579973
    • thank you

      During high school (30 some years ago in an other country, other language) I for the life of me could not understand my teacher's explanations, so I failed miserably. I wish you were around. The cleanest, clearest explanation. Thank you, I'm not entirely stupid after all.

      By photoworker 1145165756
    • Abe Lincoln

      Honest Abe never finnished school,and failed at business more times than I can count. But he did manage to become a lawyer and , oh yeah one of the most loved presidents of the United States. So, yeah...It don't make you stupid. Just not focused on the rite thing at the rite time.

      By Nigh 1149221895
    • Hmmm......

      Is this explaining something about Abe or about America.
      Having a president who's been knocked in the head seems to be a tradition.

      By harry888 1166765065
    • Very inspirring

      but im retarded..

      By Abalanzar 1151686258
    • ya

      Actually alot of people that do horrible at school are geniouses, Einstein failed the math test to become a mechanic, FYI

      By AK420 1145603653
    • wow

      i had no idea

      By rghers 1142282062
    • nice explanation dude...

      but the videos not as amazing as the one where they do it to a live frog!

      By frshhh 1141912952
    • i swear

      TADS HOW alien spaceships fly

      By Brunaldo 1146342153
    • The frog rules

      I remember seeing that and it truly rocks - I swear the frog looked confused as he rotated in mid air.
      Those bearings as well in the hard drives (if memory serves) used to be magneto-ferrofluid bearings effectively a fluid bearing with magnetic liquid allowing the hard drive to settle accurately while maintaining a hermetic seal to keep moisture and particles out of the hard drive platter area, and as mentioned you dont have bearing wear.

      By fatdadkev 1185387816
    • what is the frog video called

      what is the name of the frog video

      By grodor 1157542513
    • Link to frog vid

      If you Google "frog floating on magnet" the first or second link will take you to a site that has the frog video and several other objects floating in a magnetic field. You'll have to follow the links, since I can't post a direct link here. There is also information about how it works, if you feel like learning something :P

      By -anomie- 1189843249
    • ya the frog one is way better

      lol stupid frog floating in the air

      By thatoneguy 1143593061
    • floating frogs look koool but poor frog....

      they float the frog by placing it in a really powerful eletromagnet ... and seeing how alll mattter is composed of atoms .... and have very minute charges they interact witht the very powerful magnet by essentially pullin a lil bit form all sides thus suspendin the frog in mid air ..... but seriuosly poor frog it cant get out ..... its just stuck there under the wim of ppl ..... thatd be coool to try thou....but itll take a bigg magnet ... or jus go to space.......in spac ... no one can hear u scream .... well sorta its just muffled (actually no air so no ... i jus like tpying crp .... weeeeee ....... fear my nonsense)

      and y is it u cant type words with more than 15 letters i beg to ask?

      By ahsocurious 1144416646
    • the 15 letter thing is becase of we addr...

      they don't let you use words with more then 15 letter to keep people from putting web adresses in their coments

      By thatoneguy 1144475407
    • Wow, look like you know your stuff!

      Thanks!

      By Swanie 1138571853
    • Cool thanks

      I wanna try something like this. I love science.

      By Blackbeat 1138568562
    • thanks

      very informitive

      By giojoe 1137466437
    • WRONG, stupid!

      Actually, this is done completely by magic. This happened because Jesus wanted it to. I bet you believe in evolution too, huh?

      By Thomas Fullery 1167284563
  • With science like this...

    Who needs magic?

    By spimby 1135730129
  • ??????

    now can anyone say that david blaine and criss angel cant levitate????.... its all chemicals ...for levitation its helium

    By kazuya 1148843130
  • הסבר למה ש×Â...

    מה שרואים בסרטון נקרא "אפקט מייזנר", והחלקים המשתתפים בו הם: קערת קלקר לבנה (לשמירה על טמפ' נמוכה של החנקן הנוזלי), עיגול שעשוי ממגנט פשוט, וקוביה שעשויה מתערובת מסוימת שהופכת לעל- מוליך החל מטמפ' נמוכה מזו של חנקן נוזלי. על מוליך הוא מצב צבירה של חומר, אשר מתקבל בטמפ' הקרובות מאד לאפס המוחלט (273.15- מעלות), ועבור תרכובות מעשה יד אדם, טמפ' אלו יכולות להיות גם גבוהות יחסית (177- חנקן נוזלי). במצב העל מוליכות (בנוסף להיות החומר בעל התנגדות חשמלית אפס), החומר נהיה בעל "דיאמגנטיות=1-", כלומר החומר העל מוליך מיצר תמונת מראה של כל שדה מגנטי שמוקרן עליו (במקרה הזה המגנט מקרין עליו), ומה שמתקבל זה קיזוז של כוחות מנוגדים והמגנט נדחף כלפי מעלה במקום ליפול ארצה. במצב זה ישנה תופעה של "זיכרון" מגנטי, כלומר העל מוליך זוכר איך שמנו את המגנט בהתחלה ומשמר את המצב הזה.

    By Damn_Fool 1141408135
    • ×—×—×— איזה ×â€...

      חחחחח איזה ניסוי מעניין הלוואי והייתי מבינה יותר טוב מה בדיוק הם עושים חחח..
      ומה בדיוק קורה.. מאיפה אתה יודע את זה??

      By Shaninush 1143638700
    • אהלן..(:...

      אני שמח שזה מעניין אותך... גם אותי זה מאד מעניין, ועוד הרבה אנשים, בייחוד בזכות זה שבעתיד אולי זה מה שיאפשר לנו לייצר סוג של חלליות מעופפות... ועוד כל מיני שימושים מגניבים...
      יש לי ידע בתחום כי אני לומד פיזיקה באוניברסיטה (שנה רביעית), ובימים אלו אני לוקח קורס שבמיוחד עוסק בנושא הזה של על- מוליכות, ואז אני מקווה שיהיה לי ידע אפילו יותר נרחב בנושא...
      בימים האלה מנסים בעצם לייצר חומרים שהופכים לעל- מוליכים בטמפ' החדר(25 מעלות צלזיוס), ואז לא נצטרך את החנקן הנוזלי שראית בסרט (שנועד לקרר את החומר).

      By Damn_Fool 1143929592
  • nice work, MAGLEV, but there's more...

    MAGLEV train comment guy is right; Meisner effect, known for, oh, at least 80 years... However, the coolant appears to be liquid nitrogen, which means the metal is not typical type 4 superconductor (eg. niobium), but probably "high temp" superconductor. That is, relatively modern variation of Meisner effect.

    By wfp 1135658551
  • Hmm

    magnetic field secluded by temp in direction of absolute zero? or water floating.

    By petr188 1265778566
  • זה סוג של מתכת לא מזוה

    שנטבלת בחנקן נוזלי כמדומני

    By BISTOO 1228276893
  • Frozen magnetic field

    Isn't it??

    By hakenkruz 1193208373
  • the reason:

    this effect is called the meissner effect, where the magnet is levitated due to the repusion caused by the eddy currents that are induced in in such a direction in the superconducting material, that they repel the magnetic field of the magnet on top and hence levitate it. the material at the bottom is made to superconduct by adding liquid nitrogen to it.

    By TIME-OUT 1188469098
  • ben there done that

    That is so awesome. I did that at work in 1988. We had a lot of LN in the building and I bought the ceramic SC and the magnet in a mail order catalog Edmond Scientific. I showed it to all my coworkers. Physics is so fun, but requires discipline in order to attain stuff like this. Even this can be dangerous in the wrong hands. I also had some liquid helium in one of our experiments, our dewar had a leak and air got in and froze. Looking at frozen air now that is bizarre.

    By yatahe 1167068892
  • WOW.

    Thats a sik experiment!! Haha Hovercrafts for everyone!

    By MuGeNTOM 1158942017
  • cool

    great

    By fred2604 1158634239
  • much to difficult

    The Amazing Levitron is much better then this S**t ...

    By HerrOberst 1156721851
  • Another reason...

    That's why I quitted sciences...

    By Galaktikos 1156413636
  • i know how its posable

    cause its so cold down there that the lil metal circle just doesnt want to go there =X

    By anzekenk 1155661655
  • ack

    ignore my last comment.. something screwy is going on with my being able to view comments today... ignore me!!!

    By Nigma 1153564256
  • uhmmmmmm

    wtf!!!!!! someone please elaborate??

    By Nigma 1153564174
  • really cool

    i like how he made it spin around

    By russia 1151950172
  • :)

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    It’s a great site that I recently joined with some skepticism after I saw a similar link on this site a few weeks ago.Ive already made 200 bucks, check the forum for payment proof! To my surprise they have over 100,000 members and they are growing rapidly. I am sure you will find the community and the site as exciting as I did! Give it a shot, its completely free! Wishing you all the success that I have had and much more. Good luck!

    By camelz 1151464243
  • High Temperature Superconductors

    The block in the center of the bowl is a high temperature superconducter such as Yttrium barium copper oxide. (High temperature is considered to be above 77 K, or -196 C, the boiling point of liquid nitrogen) The effect which floats a magnet is called the Meissner effect. This is the occurence of the magnetic field inside a superconductor becoming zero. This will levitate a magnet as long as the magnetic field does not exceed the critical magnetic field. The magnet stays still because the field lines are not perfect due to flaws in the crystaline structure.

    By kevinlarson 1151172775
    • Applications

      I forgot to add an interesting application of this effect to my comment. This effect allows a magnet to float with no friction, one could spin a very heavy magnet to very high speeds as a method of storing enormous amounts of energy in the rotational kinetic energy of the magnet.

      By kevinlarson 1151172988
  • Demon Trickery

    ... i believe that is the scientific term for what is happening in that video

    By CoconutAndy 1150327479
  • Looks good...

    ..Wish my science teacher could show us stuff like this...There again, they cant afford new desks nevermind Liquid Nitrogen..

    By MdR-2006 1148911246
  • "HUH"

    yes this was on another vid on here

    By drfox 1148809179
  • Feel Like back to school...

    But it feels great. Nice demo and comments. Informative

    By HeresAnotherOne 1148580131
  • ha

    that person had really fat hands

    By 2dub 1148540592
  • It is informative

    Ja, Its really informative, put more

    By pmsurender 1148233180
  • Good picture, example of super conductiv...

    It is good picture and knowledgeable. I have seen many picture or clip on this website but i like this the most. please put some more pic if available. thanks

    By pmsurender 1148233105
  • HOLY

    CRAP!

    By ragman 1147505418
  • Good

    Now if they could only do this to buildings or people, then it might be useful.

    By FotF 1147505005
  • ooo

    I can do some Jedi sh!t with that!

    By Ess 1147483208
  • This is very intresting trick

    This is very intrsting physics trick. can click some great idea to develope the new things.

    I want to contact with this film maker/submitter to know where he get this film clip. because i have a great idea but i need some more information about this.

    By opsre 1147189390
  • easy

    its just a superconductor.. at room temp the black thing (magnet) is just metal..but when you pour liguid nitrogen on it the magnet becomes a superconductor and can hold up the shiny disc
    -simple

    By grassnif 1147032321
  • Have we...

    ...just witnessed the worlds first tractor beam prototype? Anyone done warp drive yet?

    By MrAndy 1146672008
  • you no your stuff man!

    love the fact people think god is somehow involved or its a trick ha! ya can buy a small block of the superconductor online and the magnets!

    By blueroom 1145840204
  • so

    what if you put that in a sealed pressurised container, wouldnt you have a free source of pushing kinetic power, there must be a way to harness those properties to generte electricity, come on people lets think of it, I am sick of all this pollution!

    By AK420 1145603546
  • woooow....

    its just science.... if i was a freekin master nerd scientist i could do that!! hounest~~~ no seriously!

    By Mimi_Liu 1143996987
  • use it in cool purpose

    i dont care anyway

    By ritagg 1143193335
  • comment on last post

    WOW... Just checked out PrimerMovie.com to see what was new. Someone has actually taken the time to break down the "timeline". FOLLOW THE STEPS!
    primermovie.com . look for "ten steps".

    By traveler 1142487640
  • SC and timeline

    Anybody interested in what you have seen here and are even the least bit interested in the prospect of time travel and how SC's can be involved MUST check out the independent film "Primer". This film was shot in documentary mode (not a big fan), yet, I have watched it 5 times (so far).
    P.S. Don't bother watching the trailers, untrue to films content, film goes much deeper into science of SC's. If enough of you watch, be prepared for heated debates. There is actually a website devoted to discussion of this film.

    By traveler 1142484504
  • Magnets Baby

    Hell yeah, thats awesome. I know theres somthin with magnets man, we need to put more money into researching magnets and magnetic fields.

    By SemiStoned 1142398035
  • SC? WHAT MATERIAL?

    IRON???THEY ARE CURIOUS!!!

    By LifeLove 1142367665
  • Those with lots of money should leave it...

    Great vid! One thing that wasn't mentioned in any of the comments ... SC magnets, like those used in cyclotrons, can be so powerful that they can S**k the iron right out of your blood. So it makes me wonder if one day they will find that commuting on a magnetically suspended and propelled train on a daily basis may cause health problems.

    By grizzbr1 1142071801
  • Great Stuff!

    I loved that! Bring on more!!!

    By Rasta_Pasta 1141702270
  • Pure science..

    //

    By Egens123 1141589680
  • wowhow u do dat dat was really good i ra...

    cool man cool

    By john cena #1 1141518519
  • Graviton

    have they discovered the graviton yet, and therefore started looking for an antigraviton?

    the theory is that gravity is the only field that doesn't rely on a subatomic particle like an eletron, its also the only one without a complimentary force, so theoretical physicists invent a subatomic particle and then go about proving it exists... like they did with the neutrino.

    By KX36 1141412777
    • what

      im only in 8th grade but i know about neutrinos. the things so small that they move through everything with ease. but what i dont understand is how we know these exist if they go through everything

      my teacher is a complete dumass and did not know herself, please, i am curious and you are knowledged email me at slate52@ sbcglobal.net

      By wipyoass 1143266908
  • Aha...

    ... I tried this once. It was very exciting ! I have done a lot of experiments and such things. This one is the 3rd most exciting experiment i have done. The most exciting was very facinating, I melted iron, with some COLD water ! It was unbelieveable !

    By Ramax 1141246953
    • OOOOH!!

      that sounds like it could be useful in practical jokes, teach me ^_^
      i gots A level physics knowledge, so i'm sure i'll manage

      By KX36 1141412483
  • Wow

    That is so sweet.

    By pistons125 1141244831
  • barrr

    its magic we do the same with sheep and a welly

    By welsh honda 1140897692
  • thanks

    interesting

    By giojoe 1137466482
  • Reminds me of something

    UFO Technology? The earth is a giant magnet.

    By thethinker 1136581248
    • ufo's indeed

      perhaps they have been man made all along.

      By the7ups 1143518353
  • Yep

    This is reasl that thingin the middle is a magnet then positive and negative dont match like wen you get a mmagnet and put them oposite ways and they move away from each other by themsleves but i dont kbnow at that liquid is it might even be liquid nitrogen?

    By Moee 1136520679
    • nope your wrong

      the thing in the middle is a superconductor block. and the round thing is a magnet and the liquid is probly liquid nitrogen or something colder. note the magent wasn't repeled it was fixed to a position and could pick up the block.

      By thatoneguy 1143593698
  • Yes!

    By Moee 1136520557
  • Yes, this is the MetaCafe Community.

    Approaching -200 - very minus, odd Fahrenheit, this will occur. I need some shut-eye. Let's pick this up in the AM, HST. Stephen.

    By SpectreDeed 1135853152
  • Amazing

    ok now i am going to start paying attention in science class.

    By Daniel95 1135805666
  • that's what I call a good video

    put some more like this one

    By rony p2 1135778913
  • That is

    WILD!

    By lovetolaugh 1135710670
  • that's

    new

    By je suis malade 1135702588
    • wow

      your so smart!

      By MIJ 1136188685
    • dude

      what's wrong with you

      By tobi the dog 1135702681
  • nice clip,

    but as to controlled levitation, check out the lifter project at jlnlabs.org Lot's of videos there.

    Another great source of info is American Antigravity. And once you have checked the background, you can buy yourself a lifter from Applied Electro gravitics [but remove the space between electro and gravitics].

    By jjoensuu 1135673621
  • SWEEEEEET!!!!!!!!!!!!!

    :)

    By ghost12345 1135652853
  • super conductor material

    Did you hear about the MAGLEV train? Its based on the same phenomena, super conductors are perfectly diamagnetic (repel a magnetic field completely) and zero electrical resistance (current ramains running forever is a conductor).

    By Teffa 1135645087
  • Very Cool!!!!!

    It would be cool to put if they put the liquid beneath Some type of Car body with no wheels and line metal sheets to roads, And there ya go Hover Crafts that create no Friction and Ozone safe. And Also if ya have a wreck the liquid then can Cryopreservati your body. Then can be cloned and live happily ever After

    By Narrowflare 1135638444
  • Two Words

    Super Conductivity

    By Eskimo Joe 1135636887
  • Super Cooled properties

    Not sure of the exact dynamics that cause this but super cooling the one material causes it to exhibit both attraction and repulsion magnetic forces.. which is why the small object would hover wherever he placed it and why he could also pick up the supercooled material with the unmagnetized metal bearing.

    By Sycosys 1135629846
  • yeah

    but at first nothing happened, then when they pored the liquid on it, it reacted whith it, or something, and if it was opposing forces how could he pick up one of the magnets and the other magnet not stay on the table?

    By weensieo 1135619062
    • Superconductor

      The liquid is liquid nitrogen (very cold). It cools the block of material which makes it super conducting. Super conductors can levitate very strong magnets with the magnets' own fields.

      By Peri 1135711417
  • Levatation

    I wonder if somehow you can levatate objects using this method? Hmmm I wonder...

    By ezplayer21 1186496207
  • and that

    is the theory of ufos

    By brianhuangbh 1183267108
  • FAKE

    FAKE

    By Miss Chan 1158215849
  • Sad Truth

    The fact is that these people are hte people who blow up our buildings, our young boys and men, and shoot at our civilians in hotels. As you can hear the british guy filming say "shoot at us will you". These people you see being beat are not "innocient" or in anyway above this. They are the enemys soldiers, they don't wear uniforms and they don't stand out, so any man of 'fightin age' is a soldier and to be treated as such. and if you catch a soldier you punish him, once these people where down and actualy subdued they where left alone, but when they where still kicking and fighting htey where hit with sticks. which do not apear to be more then just pieces of wood.

    this is marshall law and you'd expect to see the same thing done in our own countries if this was the situation.

    Good work british soldiers, and in no way did htey disgrace anyone. Look at the outcomes of hte mohammad cartoons, these people are in the 3rd world and act like it but expect to be treated like they own the world, first they need to get their heads out of their asses and realise that they don't own the world, and they arn't the be all and end all. Infact they're quiet ininsignificant.

    By bitmap 1142441134
    • Where are you?

      Sorry dude...wrong video

      By eagle58 1143879063
    • what does that have to do with the viedo

      i see a magent adn a supercondutor in the viedo. I don't see anyone fighting. nope no soldiers either. what are you talking about?

      By thatoneguy 1143593442
104 Comments
 

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