ch-4 electricity
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| electricity | is a form of energy that produces light,heat,magnetic and checmical changes
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| electric current | is the movement of electricity along a path called a conductor
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| load | is the technical name for any electrically powered appliance
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| conductor | is a material that allows electricity to flow through it easily
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| insulator | is a material that does not allow the flow of electric
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| amp | is a unit of electric strength
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| ohm | is a unit of electric resistance
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| watt | is a measure of how much electrical energy is being used
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| electrotherapy | is the application of electrical current during treatments to the skin
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| one ampere equals | 1,000 milliamperes
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| volt | is a unit of electric pressure
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| one kilowatt | equals 1,000 watts
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| direct current | dc in which electrons move at an even rate and flow in only one direction
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| alternating current | ac in which electrons flow first in one direction and then in the other
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| converter | changes direct current to alternating current
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| rectifier | changes alternating current to direct current
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| circuit | a flow of electrons along a path called an conductor
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| open circuit | when you turn the switch off, the circuit breaks and is now an open circuit
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| overload | passage of more current than an electrical line can carry which can cause an overload
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| short circuit | occurs when a foreign conductor comes in contact with a wire carrying current to the load
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| fuse | device that contains a fine metal wire that allows current to flow
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| circuit breaker | reusable device that breaks the flow of current when an over load occurs
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| grounding wire | another safety device is called a three-wire system any appliance requiring this protection has a three-prong plug
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| shock | human contact with an electric current causes a shock
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| local shock | passes through a small part of the body, causing burns and muscle contractions
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| general shock | passes through the nervous system
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| electrotherapy | is the application of special currents (or modalities) that have certain effects on the skin
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| galvanic current | has a chemical effects that are caused by passing the current through particular acid or alkaline solutions and or by passing the current through body tissues and fluids
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| phoresis | the process of forcing an acid (+) or alkali (-) into the skin by applying current to the chemical is sometimes referred to as "bleaching the skin" phoresis
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| anaphorsis | the negative pole of galvanic current is believed to have the following temporary effects on the area of the body to which it is applied
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| cataphoresis | the positive pole of galvanic current is believed to have temporary effects opposite of those produced by the negative pole
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| galvanic current electrotherapy | the active electrode is connected to either the positive or negative pole depending on the therapeautic reaction desired
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| iontophoresis | introduces water-soluble treatment products into the skin
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| alert | do not use the galvanic current over an area that has many broken capillaries
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| faradic current | is an alternating current(ac) interrupted to produce a mechanical nonchemical reaction stimulates nerves and muscles
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| sinusoidal current | is an alternating current (ac)with a mechanical effect much like the faradic current that produces muscle contractions
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| alert sinusoidal current | electrotherapy should not be used on unhealthy and/or broken skin
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| tesla current | high frequency current known as the "violet-ray" is an alternating current
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| light therapy | is the production of beneficial effects on the body through treatments using light rays or waves
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| visible light | the portion of the electromagnetic spectrum humans can see is called visible light. this range of wavelenghts produces visible color
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| white light | is referred to as combination light. this visible light can be broken into its individual wavelengths by a prism. a prism is a three sided glass object
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| wavelengths | that produce red are the longest waves of the visible spectrum
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| fluorescent light | is an economical and long-lasting light source.fluorescent light can create "blue" tones or cool casts in the objects it lights
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| invisible light | eighty percent of sunlight is composed of invisible rays beyond red,which are called infrared
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| incandescent | incandescent light creates the closest substitute for natural sunlight
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| infrared light | infrared rays produce pure heat rays, any infrared light produces heat
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| ultraviolet light | ultraviolet rays also known as actinic rays have a shorter wavelength and can be more damaging than infrared rays. uv rays both produce both positive and negative effects on the skin
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| UV-ALERT | when using ultraviolet rays you and your client should wear protective eyewear
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Created by:
arlenebermudez
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