17 cool magnet tricks | Magnets Tricks With MrGear

Here are seventeen of our favorite magnet tricks, projects and demos.

Extract batteries from stubborn holders :-

We’ve all got things that take batteries. a number of them square measure elegant, and a few of them don't seem to be. The worst offenders square measure electronic toys that take (say) 0.5 a dozen AA batteries, all of that should be inserted with the proper orientation– spring aspect first– and pried out, well, somehow. instead of risk puncturing your batteries by prying them out with one thing pointy, simply use a magnet to carry them out.







Find studs in your walls

Move a magnet over the wall till it finds a screw or nail head underneath the paint. You don’t even have to be compelled to mark the wall– you'll simply leave the magnet there till you’ve trained your holes.








Make a homopolar motor

One of our favourite demos of all time could be a homopolar motor. A magnet, a wire, battery and a screw area unit all you would like to form a motor spin up to ten,000 rpm.








Make LED Throwies


LED throwies area unit helpful for several a lot of things than graffiti. We’ve created variations from garden lights to artistic production to salutation cards, however it’s not a true throwie while not a magnet.

Demonstrate magnetohydrodynamic propulsion 

You can create your terribly own caterpillar drive just like the one within the seek for Red Oct with this magnetohydrodynamic demonstration. 


Play with the best toy ever: 512 1/8″ cube magnets Available from K&J geophysics, this can be enough magnets to essentially have some fun. additional magnet sources ar in our links section.


Make a straightforward compass 

We’ve antecedently shown a way to build doltishly easy compasses that float on water or spin on a swish surface. Here’s another method: sandwich a thread between 2 terribly robust magnets and suspend it down for a second compass. 

Experiment with self assembly In a method that's plenty like assembly of biological molecules or crystal formation, every which way ordered magnets will nearly automagically kind themselves into neat chains. Here area unit some magnetic self assembly videos.



Make nearly something (ferromagnetic) into a building set 

With magnets as connectors, you'll build tins into something you wish. (Just take care to induce Bawls Mints, not Bawls Buzz). 

Make a Curie motor :- 

A Curie motor uses heat to demagnetize a neighborhood of a magnet, inflicting it to maneuver off from the warmth wherever the cycle starts once more. On BoingBoingTV, Mark Frauenfelder shows you ways to make one with a candle, a wire and a handful of magnets.


Freaking amazing chip clips:-

Fold over the open high of the bag and place magnets on either facet to carry it closed. 

Play with eddy current damping :- 

Drop a magnet down associate degree atomic number 13 or copper tube, and you’ll see a hovering slow fall caused by eddy current damping. Here’s a fast video.



Make a icebox pen :- 

Slip alittle magnet beneath the metal clip on a pen (these uniballs ar our favorite) and you'll keep a pen handy on the icebox for your searching list and phone messages. 

Defeat magnetic safety interlocks 

All kinds of cool industrial machines from photocopiers to deep fat fryers have magnetic safety interlocks to stop the machine from operating with the duvet open. Whenever you see a magnet hooked up to a hinge, it’s there to safeguard you. thus if you ever wish to try to to one thing laughably dangerous like optical device engrave your fingernails, you’ll would like magnets to disable the magnetic interlocks.



Make something into a refrigerator magnet :- 

We prefer to build uncommon things into refrigerator magnets. And this trick has often fooled of us into making an attempt to open our refrigerator magnets to seem for candy. 







Demonstrate magnetism levitation :-    
                                              By putting magnetism material (such as metal or graphite) between an outsized magnet and atiny low one, you'll be able to levitate the tiny one. elaborate directions and links to kits for this area unit on Bill Beaty’s web site, amasci.com.

Wake up your portable computer or place it to sleep Many laptops have a magnetic switch that tells the pc to travel to sleep once the lid closes. Older Macs might be fooled into planning to get it on their lids up by waving a magnet by the higher hand corner of the lid. Newer Macs are often fooled by resting a magnet on the activate the proper hand facet of the keyboard. Caution: don’t place a magnet close to your arduous drive!

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