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NEODYMIUM SUPERMAGNETS
SOME DEMONSTRATIONS
- Bill Beaty 1994

  • TRICKS WITH SUPERMAGNET SPHERES

  • VIDEOS

  • WHERE TO BUY 'EM

  • SUPER COMPASS

  • SUPERMAGNET RACES

  • MAGNETIC BRAKING

  • FEEL THE DRAG DIRECTLY

  • VISIBLE, SLOW FALL

  • HOVERING FALL

  • INSIDE-OUT COPPER TUBE

  • EVEN MORE VISIBLE HOVERING

  • INVISIBLE GEAR TEETH
  • ELECTRO MAGNETIC LEVITATION PLATE

  • SIMULATED 2-DIMENSIONAL "FLUID"

  • GIANT "AUDIO TAPE"

  • FAKE MONOPOLE

  • DIAMAGNETIC WATER

  • DIAMAGNETIC WATER II

  • DIAMAGNETIC LEVITATION

  • DIAMAGNETIC EVERYTHING

  • ABOUT SPHERE MAGNETS

  • WHERE TO BUY 'EM

  • LINKS


    • WARNING: if you mess with TWO neodymium supermagnets, you are bound to pinch your fingers if you let them come together. This REALLY HURTS, it's like pliers. Also, you should wear safety glasses, since when two NIB magnets slam together, they tend to launch tiny chips at high velocities. I've had 3/4" magnets acidentally fall together and be completely shattered. The things are brittle! The ones larger than 1/4" are NOT FOR UNSUPERVISED CHILDREN!

    NEW DANGER: swallowed magnets can cause lethal stomach problems. See www.rsna.org

    Always keep magnets away from credit cards, wind-up watches, laptop harddrives, etc. I've erased several credit cards by accidentally passing an NIB magnet near my pocket, or letting one fall into my lap. This article is from 1995, so I should probably still warn against floppy disks and VHS tapes...

    Links:

    > ONWARD TO THE DEMONSTRATIONS >

    WARNING: if you mess with TWO large neodymium magnets, you are bound to pinch your fingers if you let them come together. This REALLY HURTS, it's like pliers. Also, you should wear safety glasses, since when two big NIB magnets slam together, they tend to launch tiny chips at high velocities. I've had 3/4" magnets acidentally fall together and be completely shattered. The things are brittle! LARGE MAGNETS NOT FOR UNSUPERVISED CHILDREN! For kids, use NIB magnets under 1/4" across.

    NEW DANGER: swallowed magnets can cause lethal stomach problems. See www.rsna.org

    Always keep magnets away from credit cards, wind-up watches, laptop harddrives etc. I've erased several credit cards by accidentally passing an NIB magnet near my pocket, or letting one fall into my lap. This article is from 1995, so I should probably warn against floppy disks, VHS tapes, and non-monochrome video displays. DANGER, DANGER, NEO MAGS CAN MAKE YOUR AUDIO CASETTE TAPES SOUND MUDDY, since they erase the "highs" less than the bass. And if you have an expensive neo the size of a hockey-puck, you can ruin someone's entire 8-track tape collection in a few moments. Stick it in yr back pocket and wave yr butt around.

    WHERE TO GET 'EM

    Many inexpensive NIB magnets from WONDERMAGNET, go here to order. (an EXCELLENT source!)

    For tiny spheres and huge slabs, try Mr. George Magnets

    Teachersource.com has supermagnets & toys

    Big Copper Tube + magnets, $33

    CMS Magnet

    Magnets 4 Less, disks, cylinders, blocks, very low price

    Neoworld, small spheres, blocks

    All Electronics, lots of misc sizes

    Rotometals bulk bismuth cheap (no magnets), http://www.rotometals.com/Bismuth-s/4.htm

    KJ Magnetics, magnets, sculpture kits.

    Scitoys, magnets, floating graphite

    EUROPE: Supermagnete, also in (Deutsch), (Francais)

    DuraMag, http://www.duramag.com/rawmat/neosizes.htm, large inexpensive disks and blocks

    Gaussboys

    "Amazing Magnets"

    Herbach & Rademan (mail order surplus) 800-848-8001 ($25 minimum purch)
    http://www.herbach.com a science/electronics surplus supplier, they carry several inexpensive odd-shaped NIB magnets including an extremely strong 1" disk for $25.
    Call for their current "this month" catalog

    Arbor Scientific, Ann Arbor, MI, 1-800-367-6695 http://www.arborsci.com

    Lee Valley Tools http://www.leevalley.com

    Tridus International, 310-408-2222, Paramount, CA (VERY low prices, but $250 minimum. Ask for MgOe:30 neodymium, its plenty strong but not hyper-expensive) www.tridus.com

    Master Magnetics ???

    Magnet Sales Inc., 1-800-421-6692, http://www.magnetsales.com

    Magnets Are Us Inc
    South Bend, IN
    1-800-470-3350

    Surplus suppliers: many mailorder suppliers carry 1" trapezoidal NIB
    magnets removed from computer hard disk head position motors. H&R, Am.
    Sci. Surplus, All Electronics, and others. See: http://amasci.com/supliers.html
    or try Wondermagnet.

    Or as Mike H. suggests, find old hard-disk drives and tear 'em apart to get those magnets for free! NIB magnets are used in the head-positioning linear motor. They are arc-shaped and flat, stack them for extra strength.

    		 

    > ONWARD TO THE DEMONSTRATIONS >


    Want books? Try searching amazon.com:

    (try " science experiment project" too)
    http://amasci.com/neodemo.html
    Created and maintained by Bill Beaty. .
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