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cosmetology > ch. 7 electricity and elctrical safety > Flashcards

ch. 7 electricity and elctrical safety Flashcards

1
Q

The path that negative and positive electric currents take from the generating source through the conductors and back to the generating source.

A

Complete electric circuit

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2
Q

Prevents excessive current from passing through a circuit

A

fuse

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3
Q

an electric current flowing in one direction only.

A

direct current

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4
Q

1/1000 of an ampere

A

Milliampere

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5
Q

a unit that measures the resistance of a electric current

A

ohm

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6
Q

Unit that measures how much electric energy is being used in one second

A

watt

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7
Q

1000 watts abbreviated as (kw)

A

kilowatt

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8
Q

switch that automatically interrupts or shuts off an electric circuit at the first indication of overload

A

circuit breaker

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9
Q

Completes an electric circuit and carries the current safely away.

A

Grounding

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10
Q

or (UL) certifies the safety of electrical appliances

A

underwrites labratory

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11
Q

the use of electrical currents to treat the skin

A

Electrotherapy

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12
Q

movement of electrons from one atom to another along a conductor

A

electricity

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13
Q

Any material that conducts electricity

A

conductor

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14
Q

a material that does not conduct electricity well

A

insulator

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15
Q

an apparatus that changes direct current to alternating current

A

inverter

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16
Q

rapid and interrupted current, flowing first in one direction and then in the opposite direction

A

alternating current

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17
Q

Apparatus that changes alternating current to direct current

A

rectifier

18
Q

a unit that measures the pressure of force that pushes electric current forward through a conductor

A

volt

18
Q

Also known as Amp, is the unit for measuring the strength of an electric current

A

ampere

19
Q

Also known as probe; applicator for directing electric current from an electrotherapy device to the client’s skin.

A

electrode

20
Q

the poles of an electric current either positive or negative

A

polarity

21
Q

positive electrode typically red and marked with a P or plus sign

A

Anode

22
Q

negative electrode usually black marked with a N or minus sign

A

cathode

23
Q

Constant and direct current, having a positive and negative pole, that produces chemical changes when it passes through the tissues and fluids of the body.

A

galvanic current

24
Q

the electrode used on the area to be treated

A

active electrode

25
Q

the opposite pole from the active electrode

A

inactive electrode

26
Q

Process of infusing water-soluble products into the skin with the use of electric current, such as the use of the positive and negative poles of a galvanic machine.

A

Iontophoresis

27
Q

process of forcing acidic substances into deeper tissues using galvanic current from the positive toward the negative pole

A

Cataphoresis

28
Q

An extremely low level of electricity that mirrors the body’s natural electrical impulses.

A

microcurrent

29
Q

Also known as violet ray; thermal or heat-producing current with a high rate of oscillation or vibration that is commonly used for scalp and facial treatments.

A

Tesla high-frequency current

30
Q

Condition that requires avoiding certain treatments, procedures, or products to prevent undesirable side effects.

A

Contraindications

31
Q

Also known as electromagnetic spectrum of radiation; name given to all of the forms of energy (or radiation) that exist.

A

electromagnetic spectrum

32
Q

Distance between successive peaks of electromagnetic waves.

A

Wavelength

33
Q

Measurement of the distance between two wavelengths.

A

Waveform

34
Q

the part of the electromagnetic spectrum that consists of waves detectable by the human eye

A

visible light

34
Q

Light at either end of the visible spectrum of light that is invisible to the naked eye.

A

invisible light

35
Q

abbreviated as UV light and also known as cold light or actinic light; invisible light that has a short wavelength (giving it higher energy), is less penetrating than visible light, causes chemical reactions to happen more quickly than visible light, produces less heat than visible light, and kills germs

A

ultraviolet light

36
Q

has longer wavelengths, penetrates more deeply has less energy and produces more heat than visible light. wavelength is too long to be visible to human eye

A

infared light

37
Q

Also known as phototherapy; the application of light rays to the skin for the treatment of wrinkles, capillaries, pigmentation, or hair removal.

A

light therapy

37
Q

DC and AC

A

what are the two types of electrical currents

cosmetology (1 decks)

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