Electromagnetic energy is an invisible form of energy in the transverse wave form. Of the many types of energy in our universe, this form of energy is the only one that does not require a medium or matter to travel on or in. This form of energy can travel through empty space as a transverse wave. There are many different types of electromagnetic energy. Examples of Electromagnetic Energy: 1. Radio waves 2. Microwaves 3. Infrared radiation 4. Visible light - all colors of the spectrum that we can see. 5. Ultraviolet light 6. X-rays 7. Gamma radiation
Magnetic crane
Mainly in that the electromagnet is NOT permanent. In other words, it can be switched on and off.Another relevant difference is that the electromagnet constantly requires power, at least while it is on.
This is what makes a magnet an electromagnet - the ability to turn it on and off... Anyway, electromagnets can be turned off with either the help of a switch, or just by disconnecting the power supply.
And the amount of coils.
An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. The magnetic field disappears when the current ceases. Take a look at this Wikipedia page for more information: http://en.wikipedia.org/wiki/Electromagnet
Only if the needle was made of iron or copper
See: http://en.wikipedia.org/wiki/Electromagnet
electromagnet
A magnetic field.
an electromagnet becomes storgner when the.
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An electromagnet.
Its called an electromagnet
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An electromagnet can attract the metal, leaving the plastic behind.An electromagnet can attract the metal, leaving the plastic behind.An electromagnet can attract the metal, leaving the plastic behind.An electromagnet can attract the metal, leaving the plastic behind.
An electric motor, a solenoid, an electromagnet, an electric clock and much more!
Mainly in that the electromagnet is NOT permanent. In other words, it can be switched on and off.Another relevant difference is that the electromagnet constantly requires power, at least while it is on.
The electromagnet was invented in the year 1850 by william sturgeon :)