what is a keeper used for
Yes, permanent magnets are commonly used in doorbells to create the magnetic field needed for the electromechanical mechanism to operate. The magnets help in generating sound by attracting and repelling the internal components of the doorbell to produce the ringing noise.
No, they won't. Copper, while it is a good conductor of electricity, is not a ferromagnetic material, and a magnet won't be magnetically attracted to it. (They will stick to anything if you use enough glue!)
Not all fans do need a coil and magnet - there are hand fans, punkah walla fans belt driven fans (as in your car) and Stirling engine fans that I can think of that do not need a coil or a magnet. It is only electrically driven fans that require a coil and magnet because they work on the principles of electromagnetism.
Yes, we can see the use of iron oxide (the Fe2O3 kind, which is iron (III) oxide) used in magnets. There are a number of different things that could be used in a magnet, but simply using this material, often referred to as ferrite, and a little bit of some other materials to make up the ferrite, will allow for the construction of a magnet.
To separate iron fillings from sulfur, you can use a magnet to attract the iron fillings as they are magnetic and can be easily picked up. Sulfur does not respond to magnets, so the iron fillings can be separated by simply utilizing the magnet.
Magnetic keepers can be thought of as materials that complete the magnetic circuit of the magnet. They do this by providing a paramagnetic link from one pole of the magnet to the other. That way the magnet can resist the effects of other magnetic fields that might tend to depolarize or demagnetize it.
Every machine with a motor has a magnet. If you plug it in, it has a magnet. If you put in batteries or recharge it, it has a magnet. An automatic pencil sharpener uses magnets. A computer printer uses magnets. A refrigerator motor uses magnets. An electric razor uses magnets. A fan uses magnets. Hair cutters use magnets. Nose clippers use magnets. Look around your room and see what else uses a motor.
Magnets attract all ferus metals. They use magnets to treat cancer.
Magnets is made of iron. Magnets are attracted to anything made out of iron.
magnets attract
You could use magnets to push things like another magnet or you could pull metal things to it.
No country invented the magnet. Magnets are naturally occurring objects. The Chinese were the first to use a magnet as an aid to navigation.
bar magnet, horse shoe magnet,ball ended magnet and cylindrical magnet.I recomend doing the iron shavings and bar magnet experiment.x.x TRY IT .There are 3 types o magnets parmanent, temporary, and electromagnets.you can also use water andblue food colloring to create a magnetic field.Bar Magnet, horseshoe magnet etc
There are refrigerator magnets; you can put a school picture onto a thin magnet and put it on a refrigerator (as long as it has a metal door)There are car magnets; such as a sports team symbol with a magnet on the back. You just put them on the back of your car.
Magnets are used everywhere. doctors use magnets for MRI's, Magnet is the the M in the RI. car plants use magnets whule moving pieces, and we use magnets to hang kids pictues on our fridges lol. hope this helped
Rusty magnets can still attract and repel other magnets like regular magnets. The presence of rust on the surface does not significantly affect the magnetic properties of the magnet itself. However, excessive rust or corrosion may weaken the overall strength of the magnet.
Car magnets are completely safe to use on a car. The metal of the magnet does not interact with the paint of the car. Car magnets are specifically designed to be placed on a car with no damage.