PT 3: Arrays of supermagnets: Bar magnet and compass

Back


The field is zero around a blob of small neodymium magnets ...unless you align them first! Color CRTs get distorted! Make some rotating compasses from rings of magnet beads. (Sell them at weekend flea markets!) These are 8mm and nickel plated. For various suppliers links, see bottom of These are around $0.35 each if bought in qty. from Mr. George,

Channel: Howto & Style
Uploaded: December 29, 2006 at 9:11 am
Author: wbeaty

Length: 00:02:27
Rating: 4.62
Views: 81508

Tags: physics science neo neodymium magnet supermagnet supermagnets crt distortion nanotechnology amasci

Video Comments:
cometpowell (September 29, 2008 at 4:26 am)
You shouldnt do that
zreiscool (September 23, 2008 at 1:06 am)
what is that last thing you were throwing up in the air towards the end of the video?
wbeaty (September 23, 2008 at 7:46 pm)
> last thing you were throwing up in the air

look up "buzzing magnets!" Two hard shiney supermagnets that bounce together.
ajd150 (September 21, 2008 at 2:50 am)
where do they sell those message me
ArcturiusfireW (September 17, 2008 at 9:00 pm)
take a look at what George Green did with magnets. Think what we could do with super magnets in that configuration. I think our energy problems would be solved to bad anyone who trys to get this technology out gets murdered.
carpenoctem66 (September 11, 2008 at 9:59 pm)
Thats a great program!
JackBond1234 (September 8, 2008 at 7:03 am)
So it's like a magnetic circuit?
wbeaty (September 8, 2008 at 7:10 am)
> So it's like a magnetic circuit?

Exactly. And magnetic substances work the same way: if you break up the little magnetic circuits, and instead align them so the "circuit" is routed through the open space outside the material, you've "magnetized" the material.

Unmagnetized iron is full of tiny and extremely strong "magnetic circuits." All the fields stay inside.
Fentanyl3 (September 5, 2008 at 5:19 pm)
a magnet will hold it's field indefinitely unless they are subjected to impact repeatedly, or heat in excess or repeatedly, in other words, keep them below 150 degrees or so, and don't let them slam together a lot
wbeaty (July 2, 2008 at 6:57 pm)
> t wondering how many i should buy

It takes 60 to make a buckyball.

I use 8mm, but you could buy lots more if they were 6mm.