Chapter Four: Electricity Flashcards
Light, heat, chemical and megnetic changes are produced by:
electricity
Material that best best transports electricity:
conductor
Silver and copper transmit electricity:
conductor
Materials that do not allow electricity to flow through them:
insulators
Materials such as glass, rubber or paper around a conductor that does not allow a current to pass through it is called a:
insulator
Material a current does not pass through:
alcohol
Unit of electric strength:
ampere
How many milliamperes equal one ampere?
1,000
Measure of electric energy:
watt
Constant electric current flowing in one direction:
direct current
Breaks the flow of current when an overload occurs:
circuit breaker
Steps that should NOT be followed to break the circuit when a person comes in contact with an electric current:
touch the person to ground the circuit
The application of special currents (or modalities) that have a variety of effects on the skin:
electrotherapy
When performing an electrotherapy procedure, what apparatus or current conductor is used to bring the current from the appliance to the skin?
electrode
The direct current used in electrotherapy treatments:
Galvanic
Electrode negatively charged during electrotherapy treatment:
cathode
Temporary effect a negative electrode pole produces when applying Galvanic Current during electrotherapy treatment:
increase in blood flow
NOT a temporary effect of the positive pole of galvanic current:
softens tissue
Electrotherapy treatment that causes sebum to be broken down or blackheads to be liquefied, as in deep-pore cleansing:
desincrustation
When using galvanic current on clients, what precaution must a stylist take in order to prevent injury?
do not use over an area having broken capillaries
Faradic current is used chiefly to cause:
muscle contractions
Tesla, a high frequency current, is known as:
violet rays
High frequency and alternating current are characteristics of which type of electrotherapy?
tesla
An alternating current which can be adjusted to different voltages to produce heat is:
high frequency
Produces a mild, stimulating sensation while using high frequency current:
slightly separating the electrode from the skin
Treatment with light rays:
light therapy
Light that can be broken into individual wavelengths by a prism:
combination
The longest wavelength:
infrared rays
What kind of light mimics natural light?
incandescent
Pure heat rays are produced by:
infrared rays
A benefit of using infrared light during a facial:
increases circulation
Average distance an infrared lamp should by placed during a facial:
30 inches
Actinic rays are also known as:
ultraviolet
Benefits derived from UV light:
small doses tan the skin
Small doses of ultraviolet light helps the body produce:
vitamin D
Bacteria that causes skin infections can be killed by:
ultraviolet light:
Before using UV light on the skin and scalp it should be:
cleansed
