Alright Mensa kiddies out there, time to teach Swampgirl physics :-)

Here ya go, hon.

http://en.wikipedia.org/wiki/Mei%C3%9Fner-Ochsenfeld_effect

Now all you have to do is find someone to explain the wiki.

lol, nice hieroglyphs there.

Now Mensa kiddies out there, time to explain the wiki to SG. :-)

*discard

come on siftbot....

why discard?
thats purdy

oh, sorry. Thought it wouldn't get votes :-P

Can I save it? Or did you want the room?

i've never seen anything quite like it, to be able to position an object in a field like that is bizarre

Ya, I thought it was amazing. If SG trashes it, I'm putting it up. ;-)

ok, if you like..please.

*save

I wonder if it has to be discarded first.....hmmm....

I guess we'll see.

Thankyou, I owe you a 'save' :-)

lol...well, let's wait and see if it works! AND if anyone but us are interested in this!

I wonder if I can superconduct my save? hee hee hee....

Discarding this video (self-discard called by swampgirl)

sg, did you put "saved" in the tags, or was that automatic? Hmm... I assume it was you?

Hmm... and now I can't vote. How odd. Looks like it needs a save first.

As for explanation, the item becomes a super conductor only when cold. The meta-cafe page has some understandable explanations: http://www.metacafe.com/watch/55826/who_can_explain_this/

The goal of scientists is to create superconductors (i.e., no friction!) that work at higher temperatures, so that they can be used in more practical applications.

*save

The Meissner effect is the total exclusion of any magnetic flux from the interior of a superconductor, this happens here because of the introduction of nitrogen decaying the magnetic field to zero and producing perfect diamagnetism allowing the levitation of the iron placement on the object.

Saving this video from queue deletion, sending it to the top of the queue for one more try. Originally submitted on Sunday 17th September 2006 (save called by gold star member daphne)

And somehow my vote got processed. Sweet.

Yay!!!!

Whew! Now I can go to bed.

lol...I just saw the tag. That's funny.

I put the 'saved' in the tags afterward... being cheeky

Mysteries solved. I'm still amazed by the fact that "breast physics" is auto-linked here. How odd.

Time for sleep for me too. Finally.

wow, I'm dazzled by the intelligent VS collective! I bet you all invested in Rockwell's retroencabulator. ;-)

I think the shiney thing floats because the invisible magnetic field "wraps" around the levitating magnet because of a the special properties of the superconducting material beneath it that i understand is not a magnet at higher temperatures.

Did this get discarded? I don't see a voting field any more, and it's in the "discarded" section.

I thought we saved this. Can an admin-type person look at this?

odd, you did save it. let's try this *blog

Dearest Dag, James, Lucky, Ender, PMonkey, Horsujet...or any other admin. or someone with VS siftpowers,

After botching things up, Daphne tried to save it, yet here it is. Please put this video back? I would greatly appreciate it.

Thanks :-)

Sending this video to the blog for discussion (sent by gold star member swampgirl)

ask and ye shall receive. That was weird though, will add it to the "list" of stuff to look at.

thanks, James :-)

Yay! Thank you!

wow, what a mutt's lunch this thread turned out to be :-)

hee hee hee

And let this be a lesson to all you too-soon-discarders! Just because it doesn't get votes immediately, it doesn't mean it won't get sifted. And then rise to the top 15.

But maybe it was the constant comments...who knows. Drama sells.

Then the God Warrior vid should go straight to the top.

the nature of this post was irrepressible

it's in the top list, wow. Thanks in spite of my obvious ignorance of physics..and VS ;-)

Over my head!!

Never underestimate the power of the underdog. ;-)

I have learned so much about what an audience wants by watching this group. Some sifts that I think will become legendary at VS never escape the queue...and others that I feel are so-so get to the top.

Conclusion: (in no particular order) Kittens, explosions, politics, science, and practical jokes involving farts and/or monkeys....

i agree daphne, plus people like sucking up to gold stars and voting for their vids out of reflex!

LOL, really ren? http://www.videosift.com/story.php?id=11513&where=queue ;-)

No one ever votes my videos out of reflex... *sniff*

I beg to differ, your discard tantrum today got my attention.

wasn't there a video of the floating frogs on here? maybe not... I'm too lazy to post thing anymore.

http://en.wikipedia.org/wiki/Diamagnetism

and a simple explanation...

http://www.hfml.science.ru.nl/levitation-simp-expl.html

What an elaborate ruse to get to the top15 list! discard, save, blog, return

muhaahahhahaaa

Seriously, my goal is to get em out of the queue. At first I was dumping it to put up another..then well.

hee hee hee...this might end up being your most popular sift.

I think i deserve some credit for making you change your mind swampy
perhaps a tag to say reniscool or something

Not enough room for the tag, ren. Put up some good vids and we'll talk em up ;-)

I think it's going to hit number 1!
what a heartwarming story of the video that could

Nooo It dethroned my Tim Ryan video!

It's heading straight to the top. Stellar

Nice to see excitement happen in my (short) absence.

And what's this? Favouriting???? Oooh!

"what a heartwarming story of the video that could"

I agree. Someone should make a video about it.

Ya, Krupo...isn't it great? No more searching around for the videos you like. w00t!

Or using bookmarks and del.icio.us for that purpose.

This is your mission if you choose to accept it SG
http://www.videosift.com/story.php?id=12373&where=queue

a challenge :-)

Hey! I just noticed this is at #1! Thanks guys!

SG for the win

lol, yay?

this vid sooo doesn't deserve the top. That 4 year old playing the drums should be here

Look at the related vides below... now we know the secret to perky

that is awesome!

Real Ultimate Coldness makes things float. That's why the icebergs at the North Pole float on top of the ocean as well as the world. It's science.

*geek

Added video to geek channel (geek called by gold star member joedirt)

This is a semi conductor...

'shroomy, I had missed your "science" comment before. cold does not make things float. in fact almost every substance contracts when colder. (same weight & smaller volume means what?) so colder means more dense, and most things would sink when colder.

The oddity of water is that it expands when frozen. So it actually floats as ice. And yes, there is ice at the north pole, a lot more in antarctica. (Soon to be a year round unfrozen sea in the artic circle though, so you keep-on keeping on with your global warming is a myth story.) It's as solid as your grasp of science.




---------
no, it is a super-conductor.

most semi-conductors couldn't generate the kind of EM fields this does. the question is at what temperature can you make a material act like this, so this one is relatively high temp, liquid nitrogen (77K). It's probably an exotic material like Yttrium-Barium-Copper Oxide (Note the resistance goes down to zero).

Semiconductors are what make computers possible. Silicon and III-V materials are used because you can either make the device conduct electrons by applying a voltage, or it doesn't conduct when there is no voltage. That makes a possible 0's and 1's... and Intel Processors when you put a couple million of those devices (switches) together.

*science

Adding video to channels (science) - requested by rembar.

The Meissner effect is the total exclusion of any magnetic flux from the interior of a superconductor, this happens here because of the introduction of nitrogen....


This is wrong.

I actually work on superconductors. I think someone already posted the wikipedia article, so I don't know if you still want an explanation, but I can give you a pretty basic one. Let me know if you are game or if you think you got it.

Tags for this video have been changed from 'science, physics, experiment, magnet, saved' to 'science, physics, experiment, magnet, saved, superconductor, meissner effect' - edited by MycroftHomlz

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The duration of this video has been updated from unknown to 1:43 - length declared by critical_d.