The Electromagnetic Catolog
By Becca Whiteman and Lauren Taft
Electromagnetic Induction
Electromagnetic Products
Induction Stove
The first part of induction cooking is a coil of copper. When an electric current is passed through the coil it creates an electromagnetic field of energy. This electric field produces heat in the pot or pan, and heats and cooks the food. Induction stoves have helped the modern world quickly and efficiently heat and cook it's food.
Scrap Yard Magnets
An electric magnet uses electric coils in the plats to generate a magnetic field. This magnetic field has a power switch and can be turned on and off when ever it needs to pick up a load or turn it off when you need to put it down. The magnetic filed is strong enough to pick up items with great mass, such as car. The on/off switch works by completing or disconnecting a circuit.
Electric Bell
The action is caused be an electromagnet, while in rest position the clapper is held away from the bell a short distance by a spring arm. When an electric current is passed through the winding of the electromagnet it creates a magnetic field that attracts the iron arm of the clapper. As the clapper contacts the bell, the electric current is broken and is goes back to its original position, where the electric current is then turned on again. The system is repeated until the switch is turned off and the electromagnet does not produce a current because of lack of electricity.
Tape Recorder
On the tape inside the tape recorder, a line of ferric oxide is attached. An electric current flowing in the coils of the tape create a fluctuating magnetic field. This causes ferric oxide on the tape to align in a manner proportional to the signal, making it remember the pattern. When the tape is played back, the pattern of the magnetic field is remembered and amplified to speakers.
M.R.I. Machine
An M.R.I. scanner is a device in which the patient lies within a large, powerful magnet where the magnetic field is used to scan the entire body, allowing you to see what the inside of the body looks like. The electromagnet measures the amount of Hydrogen in the patient's body, which is the only atom that has a magnetic field. When the M.R.I.'s magnet is turned on, the Hydrogen nuclei begin to spin around, which the M.R.I. then measures to form an image of the inside of the patient's body.
Electromagnetic Glasses
Electromagnetic glasses allow the wearer to record what they are seeing and thinking. The glasses attach to the user's temples and measures the brain's electric impulses and records them on a tape (much like a tape recorder) and also records the images the wearer sees (this is just video recording technology) The tape can then be shown as the glasses turn into a screen, and the electrical impulses will make the brain remember exactly what it was thinking as it saw the images.