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rapid and interrupted current, flowing first in one direction and then in the opposite direction
unit that measures the amount of an electric current (quantity of electrons flowing through a conductor)
theraputic light that should only be used on bare oily skin; contains few heat rays, is the least penetrating and has some germicidal and chemical benefits
process of forcing acidic substances into deeper tissues using galvanic current from the positive toward the negative pole
switch that automatically interrupts or shuts off an electric circuit at the first indication of overload
the path of an electric current from the generating source through conductors and back to its original source
process used to soften and emulsify grease deposits and backheads in the hair follicles
form of energy that, when in motion, exhibits magnetic, chemical or thermal effects; a flow of electrons
also called radiant energy because it carries, or radiates, energy through space on waves
constant and direct current (DC), having a positive and negative pole and producing chemical changes when it passes through the tissues and fluids of the body
invisible rays that have longer wavelengths, penetrate deeper, and produce more heat than visible light
process of introducing 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
theraputic light used on dry skin in combination with oils and creams; penetrates the deepest and produces the most heat
Tesla high-frequency current
thermal or heat-producing current with a high rate of oscillation or vibration; also called violet ray
ultraviolet (UV) rays
invisible rays that have short wavelengths, are the least penetrating rays, produce chemical effects, and kill germs; also called cold rays or actinic rays
unit that measures the pressure or force that pushes the flow of electrons forward through a conductor
instrument that plugs into an ordinary wall outlet and produces various types of electric currents that are used for facial and scalp treatments
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