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Hairdryers By Emily and Tom

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by

Elizabeth Harris

on 16 June 2015

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Transcript of Hairdryers By Emily and Tom

The Armature
Field magnets are just permanent magnets that are placed near the armature.Depending on the flow of electricity, the field magnet will repel or attract the armature.
The Field Magnet
The Armature or electromagnet consists of an iron bar that is wrapped in coiled wire.As electricity passes through the armature the coiled wires make a magnetic field of the magnetic field.

The need was to be able to dry your hair faster and more efficiently because:
Women usually went for a shower in the morning and needed to dry their hair in time to go to work.
Hair dryers are also a more efficiently way to dry your hair faster.
Why was there a need for hairdryers
The parts of an electrical motor are:
Armature
Commuter
Brushes
Field magnets
Rotating coil

Parts of an electrical motor
The original model of hair dryer was invented in 1890 by Alexander Godefroy.
This hair dryer was not hand held and was connected to the ground.
The first hand held hair dryer was introduced in 1925, this was 1kg.
Electric motors were invented in 1820 by French physicist André-Marie Ampère.
They work by two magnets in the motor.
One of these magnets is facing North and the other is facing South, which causes the armature to rotate, which creates electricity.
A commuter refers to two metal plates that are attached to the axle just above the armature that passes through electricity to the electromagnet.
The commuter
Hairdryers
By Emily Beutel and Tom Sands
Stages of Development
Electric motors
How does the hair dryer work
The hairdryer works by the spinning of the propeller.The to magnets force together but can't which causes it to spin because they're opposite sides, so if you put a propeller on the metal it will create air. That air then goes through a heating element and then out of the hair dryer.
thanks:)
The Brushes
The brushes of an electrical motor the 2 stringy pieces of metal that make contact with the commuter.
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