Magnets All Around!
Magnets are used in so many ways that it seems almost impossible to carry on with our modern life without them. Power stations use magnets to produce large amounts of electricity. Magnets are also used in compasses, loudspeakers, electric motors, refrigerator doors, cassette recorders, computer discs and other appliances.
There are magnets of different shapes and sizes. The most common shapes include - bars, horseshoes, rings, discs and cylinders. Bar magnets are mostly used in compasses, horseshoe magnets are used in small electric motors, and disc magnets are used in radio, television or stereo loudspeakers.
This page will focus on simple experiments with magnets.
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How Interested in Magnets Are You?
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What's In Store
- How Interested in Magnets Are You?
- Science Experiments Series
- How Do Magnets Work?
- The First Known Magnets
- Need A Lodestone?
- Different Types Of Magnets
- Neodymium Magnets
- What You Should Never Do With Magnets....
- A Recommended Read For Kids
- Best Of Magnetic Toys
- Experiments with Magnets #1 - How Strong Is Your Magnet?
- Experiments with Magnets #2 - Mapping A Magnetic Field
- The Cause of the Earth's Magnetic Field Solved!
- Even The Sun Has It!
- Experiments with Magnets #3 - Magnestism Passing Through
- Experiments with Magnets #4 - Magnetic Sailing Boats
- Magnetic Sailing Boats
- Magnetic Liquid Art
- Experiments with Magnets #5 - Making A Magnetic Compass
- SciEd Magnetic Compass
- Finding North Using Your Watch
- Experiments with Magnets #6 - Magnetic Magic
- Magnetic Magic
- Zoomdoggle's Amazing BuckyBalls in action!
- Zoomdoggle Buckyballs
- Magnetic tricks
- Experiments with Magnets #7 - Make Your Own Solenoid
- Solenoid Concert
- Experiments with Magnets #8 - Magnetic Levitation
- Magnetic Levitation Video
- Magnetic Levitation Trains (Maglev Trains)
- Blog Posts On Maglev Transports
- Magnetism In Homing Pigeons
- Magnet Tweets
- Magnetic Play Books
- Best Of Magnetic Kits
- Useful Links
- Love This Lens?
- Have Your Say!
Science Experiments Series
More Fun Experiments For You or Your Kids To Try!
Fun Experiments
Fun Experiments - Create Science Models!
How To Make A 2-Way Telegraph
Make Your Own Electric Motor
Build Your Own Crane
**Picture of girl performing an experiment** :
Get At AllPosters
How Do Magnets Work?
A magnet (from Greek '', Magnesian stone) is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials and attracts or repels other magnets.
A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. An example is a refrigerator magnet used to hold notes on a refrigerator door. Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic). These include iron, nickel, cobalt, some rare earth metals and some of their alloys (e.g., Alnico), and some naturally occurring minerals such as lodestone. Although ferromagnetic (and ferrimagnetic) materials are the only ones attracted to a magnet strongly enough to be commonly considered magnetic, all other substances respond weakly to a magnetic field, by one of several other types of magnetism.
Some ferromagnetic materials can be magnetised by a magnetic field but do not tend to remain magnetised when the field is removed; these are termed soft. Permanent magnets are made from magnetically hard'' ferromagnetic materials that stay magnetized.
An electromagnet is made from a coil of wire which acts as a magnet when an electric current passes through it, but stops being a magnet when the current stops. Often an electromagnet is wrapped around a core of ferromagnetic material like steel, which enhances the magnetic field produced by the coil.
The overall strength of a magnet is measured by its magnetic moment, while the local strength of the magnetism in a material is measured by its magnetization.
The First Known Magnets
Loadstones/Lodestones
The first known magnets were loadstones, which can pick up nails or other small iron or steel objects. In the pic you can see a loadstone attracting nails.
Today a powerful electromagnet, can lift huge loads of iron or steel scrap.
Learn more about Lodestones.
Need A Lodestone?
Get The Best Ones Available!
Different Types Of Magnets
Magnets Of Different Shapes
Magnets are of different shapes. The main types are -
1. Bar magnets - They are placed near doors and are used as latches to keep the doors closed.
2. Horseshoe magnets - They create magnetic fields for small motors like those in toy cars.
3. Circular magnets - They are used in electronic computers to 'remember' numbers and instructions.
4. Disc magnets - They are used in radio speakers to help create sounds from electric impulses.
5. Cylindrical magnets - They are used in some machines to hold in place the object being worked on.
Magcraft NSN0604 1-Inch by 1/8-Inch Rare Earth Disc Magnets, 4-Count
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1/2 x 3/4 Lg. (A x B), 4.0 lbs. Holding value, Two Pole, Without Hole, Cylindrical, Permanent Magnet
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Neodymium Magnets
What You Should Never Do With Magnets....
1. Never heat a magnet. Heat destroys magnetism because it rearranges the mini-magnets in all directions. They will then lose their magnetism.
2. Don't hit a magnet with a hammer or other hard objects. The shock destroys magnetism by rearranging the mini magnets in all directions.
3. Don't drop a magnet onto the floor. When the magnet hits the floor the mini-magnets will no longer line up and they'll lose their magnetism.
More
A Recommended Read For Kids
What Makes A Magnet?
What Makes a Magnet? (Let's-Read-and-Find-Out Science 2)
Product Description
Will a magnet pick up a paper clip or a feather?The answer is, just the paper clip. Magnets only pick up things that contain bits of iron. In this new addition to the Let's-Read-and-Find-Out Science series, veteran author Franklyn Branley explains the properties and behavior of magnets. True Kelley's charming illustrations will entertain readers as they discover for themselves what makes a magnet. Hands-on activities include making a magnet and compass.
Customer Reviews
Amy - "The good thing about this book is that it is interesting enough to read it (at bedtime, for example) without pausing to do the experiments or you can use it in conjunction with some great little experiments to learn more about magnets."
Firelfy - "I found this book to be extremely informative while explaining how magnet work in a way my 3 year old granddaughter understands while learning myself!!"
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Best Of Magnetic Toys
Magnetic Toys and Games for Kids
LeapFrog Fridge Farm Magnetic Animal Set
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Magformers 30 Pc Magnetic Building Set (colors may vary)
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Magz-X 106 Magnetic Construction Kit MX106
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Melissa & Doug 20 Animal Magnets in a Box
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Melissa & Doug Joey Magnetic Dress-Up
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Experiments with Magnets #1 - How Strong Is Your Magnet?
Magnetic Strength Experiment
Some magnets are stronger than others, and the force of magnetism is always strongest at the poles of a magnet.You Will Need :
Several Magnets
About 20 metal paperclips
Instructions
1. Pick up one paperclip with a horseshoe magnet. Now put a second paperclip near the first one. It will cling on, because magnetism travels through the first paperclip and attracts the second one.
2. Add more paperclips one at a time to make a chain. How many paperclips can this magnet hold?
3. Try the same experiment with each magnet. Which is the strongest magnet? Are the biggest magnets also the strongest ones?
4. Now find out where the magnetism is strongest on one magnet. Start the chain of paperclips from three different parts of the same bar magnet. Start once with the north pole, once with the south pole, and once in the middle ofthe magnet. Where is the magnetism strongest?
5. Can you make a chain of paperclips from one pole of a magnet to the other pole?
Read more interesting articles :
How strong are magnets?
How Strong is Your Magnet?
Experiments with Magnets #2 - Mapping A Magnetic Field
Draw A Magnetic Field | Map A Magnetic Field
Although you can't see magnetism, you can make a map of a magnetic field which will help you to see where and how magnetism worksThings You Will Need
A large piece of paper
A pencil
A bar magnet
A small compass
Instructions
1. Place the magnet in the middle of a large piece of paper and draw round it in pencil to mark its position.
2. Put the compass near the magnet. Draw a short arrow next to the compass, showing the direction the needle is pointing.
3. Move the compass to another position. Draw another arrow showing the direction of the needle. Mark the compass and draw short arrows in about 20 places around the magnet.
4. The arrows on your map show curved lines that run from the north pole of the magnet to the south pole. The lines are drawn close together near the poles, where the magnetism is strongest. Away from the poles, where the magnetism is weaker, the lines are drawn further apart.
The Cause of the Earth's Magnetic Field Solved!
An interesting video I found on YouTube...
Even The Sun Has It!
The Sun and its magnetic field
There's a huge magnetic field around the Sun. Glowing gases burst from the Sun's surface.
These gases help us to see the curved shapes of the Sun's magnetic field.
Experiments with Magnets #3 - Magnestism Passing Through
Which materials can magnetism pass through?
Try an experiment to find out which materials magnetism can pass through.Things You Will Need
Some metal paperclips
A piece of paper
A piece of cloth
Some aluminium foil
A magnet
A glass jar
Several metal cans
Instructions
1. Put some paperclips inside a glass jar. Using a magnet on the outside of the jar, can you slide the paperclips up the inside? Yes, you can! Your magnet will attract the paperclips inside the jar, because magnetism passes through glass.
2. Now try the same experiment with a small metal can. If the can is made with magnetic metal, such as iron or steel, the magnet will attract the can but not the paperclips. The magnet will stick to the can, but the magnetism doesn't pass through the metal to the paperclips.
3. Try the experiment again with a can made of non-magnetic metal, such as aluminium. Magnetism passes through aluminium, so you can use the magnet to move the paperclips inside the can.
4. Try wrapping your magnet in different materials, such as paper, cloth or aluminium foil. Can you pick up paperclips with the wrapped magnet?
Experiments with Magnets #4 - Magnetic Sailing Boats
Make magnetic boats
Magnetism can pass through water. You can make some model sailing boats and move them with magnets!Things You Will Need
16 drawing pins
Four sewing pins
A sheet of white paper
Some coloured pencils
String
A plastic tray
Two thick books
Four corks
Two strong bar magnets
Two wooden sticks, about 20 cm long
Instructions
1. Place the tray on top of the two books and carefully fill it up with water.
2. Tie a bar magnet to one end of each of the wooden sticks, using the string.
3. Ask an adult to cut each cork in half. Stick two drawing pins into the flat bottom of each cork.
4. To make the sails, draw four triangles on the paper. Colour these and then cut them out. Push a pin through each sail and stick a sail into each cork.
5. Place the boats in the water and move the magnets under the tray. Your boats can now sail.
Magnetic Sailing Boats
Great Gift For Kids!
Sailing Boat Crew Wind Up Toy
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Magnetic Boats In The Tub (3)
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Magnetic Boats
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Popular Playthings Magnetic Build-A-Boat
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Boikido Magnetic Fishing Boat
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Magnetic Liquid Art
A Beautiful Video -- A Part Of An Art Project
Concept behind the art project (as given in the video) :
We are pursuing the creation of interactive installations that stimulate and inspire man's most primitive emotions. Dynamic, organic shapes produced by the movement of dark lustrous fluid (magnetic fluid) are incorporated into certain sections of the installation to expression passion and desire toward life.
The phenomenon in which fluid ascends upwards against the forces of gravity reminds us of living forms. The fluids move in response to rhythms of synchronous sound.
These interactive installations are not machine like in nature but rather exhibit the nature of pulsating fluid in actual life forms.
Experiments with Magnets #5 - Making A Magnetic Compass
Make A Compass
Things You Will NeedModelling clay
A watch
A felt-tipped pen
A long steel needle
A strong magnet
A drinking straw
A shallow bowl
Instructions
1. You can magnetize the needle by stroking it with one pole of the magnet. Always stroke the needle in the same direction, with the same pole of the magnet. Lift the magnet well away from the needle as you return to start another stroke.
You will have to do at least 10 strokes before the needle is magnetized. Test the new magnet by trying to pick up pins.
2. When the needle is magnetized, push it through the centre of a short piece of drinking straw. Plug each end of the straw with modelling clay.
3. Fill the shallow bowl with water, and place the drinking straw and needle on the water. The straw will float, and the needle will turn in the water until one end points to the north. Use a watch and the Sun to check which direction is north.
4. Make the rim of the bowl with the letters N, S, E and W to show the position of the four main points of the compass - North, South, East and West.
Read How Compasses Work.
SciEd Magnetic Compass
SciEd Magnetic Compass, Small Letters; Magnetic Compass, 45mm dia.
Compass, Magnetic; Aluminum Case; 8-Directional Face; Raised 360 Degree Dial, 20 Degree Graduations; 45mm dia.
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Finding North Using Your Watch
You can use your watch to find north whenever the Sun is shining. Hold your watch level and point the smaller hour hand at the Sun. The north-south line is halfway between the hour hand and the number 12 on your watch. Stand with the place where the Sun rises on your right, and point a pencil in the north-south direction. You and the pencil are now pointing to the north.
Experiments with Magnets #6 - Magnetic Magic
Have you ever heard of the Indian rope trick? Magicians in India who perform this famous conjuring trick made a rope appear to stand upright from the ground with nothing holding it up.Other magicians can make objects, and even people, seem to float in the air with nothing holding them up. This is called levitation. We can use magnets to make things levitate, or levitation. We can use magnets to make things levitate or float in the air. Try it yourself with a simple experiment.
Things You Will Need
Cotton thread
A paperclip
Sticky tape
A sheet or paper
A strong magnet
Instructions
1. Tie one end of the cotton thread to a paper clip.
2. Tape the other end of the thread to a table, using sticky tape.
3. Can you make the thread stand up without letting the magnet touch the paperclip?
4. Pass a sheet of paper between the magnet and the paperclip to show that they are not touching.
Magnetic Magic
Learn More Tricks!
Magnetic Magic: Magic Tricks Done With Magnets
Nifty magic tricks that rely on the deceptive use of magnets, complete with ten magnets and one magnetizable coin. A seamless blend of Klutz goofballism, MIT physics, and some very sneaky magic.
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Zoomdoggle's Amazing BuckyBalls in action!
The New Magnetic Craze In Town!
Zoomdoggle Buckyballs
The Amazing Magnetic Toy That You Won't Be Able To Put Down!
Each set contains 216 powerful rare earth magnets that can be shaped, molded, torn apart and snapped together in UNLIMITED WAYS. Make sculptures, puzzles, patterns, shapes, stick stuff to the fridge, invent a new game-trying to find something more useful is useless.
P.S : Only suitable for children who are 13 plus.
Bucky Balls
Amazon Price: $29.95 (as of 12/05/2009)
Customer Review
"I have a set myself that I received as a gift. At first glance they don't seem very impressive...it's a bunch of silver balls in a jar. But then you dump them out and try to pull one off. They are incredibly strong, one ball has enough magnetic energy to hold the rest of the clump." - Sakamoto
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Magnetic tricks
Scientists have invented a clever way of showing how a superconductor works. If a powerful, lightweight magnet is moved towards a disc of superconducting material, the magnet will float just above the disc. As the magnet moves, it makes an electric current flow through the superconductor.
The superconductor has no electrical resistance, and so the current flows around and around without losing any energy. The current flowing around and around creates a magnetic field. This magnetism from the disc repels the magnet above. As the current flows through the disc, the magnet floats in mid-air above it.
Experiments with Magnets #7 - Make Your Own Solenoid
Part of an electromagnet is called a solenoid.
You can make a solenoid and see for yourself how a steel rod moves inside the coil when the electric current flows.Things You Will Need
Scissors
1 metre of plastic coated wire, with bare ends
Use sticky tape to keep the wire in place
A long steel sewing pin
A 4.5 volt battery
A drinking straw
Instructions
1. Cut a piece three centimetres long from the drinking straw. Wind the wire lots of times around the short piece of straw to make a solenoid. Always wind the wire in the same direction. Leave about 25 centimetres of wire free at each end.
2. Connect one end of the solenoid wire to one terminal of the battery.
3. Stand the pin upright on the table. With the other hand, place the solenoid over the pin. Hold the solenoid upright with the pin inside it.
4. Hold the free wire from the solenoid against the free battery terminal and the electric current will flow. As the current flows, the pin jumps up into the coil. It will stay there until the current is switched off.
5. Now change over the connections to the battery. Does the pin still jump up into the solenoid? Does it matter in which direction the electric current flows through the coil?
Solenoid Concert
Music From Solenoids
Experiments with Magnets #8 - Magnetic Levitation
Magnetic Levitation Experiment
Here's a simple Magnetic Levitation experiment :Things You Will Need
Scissors
Stiff plain paper about 20 cm x 5 cm
Sticky tape
Two strong bar magnets
Instructions
1. Roll the paper into a tube shape and put sticky tape along the long edge. Cut a long, thin slot in the side of your tube. The tube should be a little wider than your bar magnets.
2. Place the two magnets inside the tube with the north poles of both magnets facing each other. You can see through the slot in the tube that the upper magnet is levitating. The like poles are repelling each other.
What happens when the two south poles are facing each other?
Magnetic Levitation Video
Magnetic Levitation Trains (Maglev Trains)
The High Speed Ground Transportation Vehicle
Magnetic Levitation Trains are fast becoming a popular mode of transport in many parts of the world. Instead of the usual railway tracks, very powerful electromagnets are used which keeps the train levitated on this magnetic track called a guideway.
Maglev trains can be found in China, Japan, U.S, Germany and Korea -- to name a few. The Shanghai Maglev train is the first commercial high speed maglev line in the world!
Get to know more about Magnetic Levitation Trains.
Blog Posts On Maglev Transports
What's Buzzing In Blogger World
- OPINION: Bring the maglev back to Long Island
- Ernest M. Fazio, director of communications for Maglev 2000, is chairman of Long Island Metro Business Action. Two hundred-seventy mph was the reading on ...
- Maglev matching funds due soon
- ... funds soon if the Georgia Department of Transportation can get its hands on federal money designated for the maglev project from Atlanta to Chattanooga. ...
- FOX5 Tests Maglev Vs. DesertXpress
- LAS VEGAS -- The Maglev will get you to Anaheim in just 81 minutes, and in just 80 minutes you can zoom to Victorville on the DesertXpress. ...
- Maglev train an obvious way to boost economy
- What we should do next is support the movement to build the maglev train between Las Vegas and Anaheim, Calif. For starters, American Magline Group ...
Magnetism In Homing Pigeons
Yes! Even a pigeon has magnetism inside its head and neck which allows the bird to navigate on cloudy days when it cannot see the Sun. This magnetic material hence acts as a kind of built in compass which helps them in finding their way.
If a tiny magnet is fixed to a pigeon's back, it cannot find its way. This may be because the extra magnet stops the pigeon's built in magnetism from working properly.
Magnet Tweets
What's The News About Magnets In Twitter
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- skrobertson
- @LiL_E_94 yerp thats my plan haha :) and pop too ! haha i cant go one hour without texting :/ phones are magnets haha ! dont ya think ?! xo
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- gogotrip
- 36 Hours in South Beach, Fla.: Like other American magnets of decadence, this city still has an irresistible, d.. http://bit.ly/6OXsDn
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- KCavenderDesign
- #Christmas Magnets: Zazzle.com Store: http://bit.ly/1dMj8w via @addthis Today Only, Free Shipping on $25 or more!
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- J_StarksII
- @ALINA_CANTRELL u mustve went hard to end up sittn around n start playin w/magnets lol
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- amstronggold
- Saturday Morning Science Experiment: Up With Magnets! Boing Boing: Science · From the Toilet to the Tap · Thumb Â.. http://bit.ly/6v4RxO
Magnetic Play Books
Some Of The Best Magnetic Play Books For Your Kids
Best Of Magnetic Kits
For Kids
Learning Mates Electricity & Magnetic Combination Kit
Explore the relationship between electricity and magnets.
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Magnetic Poetry In Other Words Magnetic Poetry
Over 270 double-sided word magnets that stick both ways; with a clever language builder; includes noun, verb and adjective tiles.
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Super Magz 130 Magnetic Construction Kit M1704
Strong magnets in different colours.
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Orb Factory Magnetic Mosaics Metal
2100 metallic foam magnets; 4 reusable templates; Creative ideas poster; 12" square play surface; 7 zip-lock storage bags.
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Magformers Magnetic building kit 14 Piece Set
48 Super powerful magnets with many building combinations.
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Useful Links
Get To Know More About Magnets
- More Magnet Experiments and Info
- You get a load of information here plus some experiments that can be tried.
- Magnet Man - Cool Experiments with Magnets
- Experiments with magnets and electromagnets which can be built and demonstrated
- Childrens Science Experiment
- As you will see from these magnetic experiments, magnetism (the invisible force) can push and pull through some materials such as paper and plastic.
- Experiment with Magnet Magic
- Is your child struggling with the principles of magnetism? Here's a fun activity to demonstrate polarity and understand the basic principles of magnetism.
- Magnetic Dance Video
- Three dimensional pentagons (called pentagonal dipyramid) made from GEOMEGs attempt to find the magnet optimal state.
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Have Your Say!
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Reply
- alteredkat alteredkat Nov 17, 2009 @ 7:05 am
- Cool lens! My kids will love this...they are both into science and magnets!
Thanks for popping in and commenting on my lensography - I appreciate it!
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- hlkljgk hlkljgk Nov 9, 2009 @ 1:36 pm
- really great ideas here
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- Pukeko Pukeko Nov 5, 2009 @ 8:10 am
- Hi, Just had another read. Love this lens. Just wanted to let you know that I have featured it as lens of the month of November at Homeschool Fun - Science Resources
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- divacratus divacratus Nov 4, 2009 @ 3:10 pm
- Thanks everyone who liked this lens! Special thanks to the angels who blessed it.
Nickupton - Thanks for the suggestion! Will definitely look into it.
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- Flynn_the_Cat Flynn_the_Cat Nov 3, 2009 @ 10:13 pm
- Blessed by an angel.
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by divacratus
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