F
currents used in electric facial and scalp treatments
What is MODALITIES?
apparatus that changes AC to DC
What is a RECTIFIER?
negative or positive pole of an electric current
What is POLARITY?
invisible rays, with short wavelengths and minimal skin penetration, that produce chemical effects and kill germs; also called actinic or cold rays
What is ULTRAVIOLET LIGHT?
electromagnetic spectrum that can be seen by the human eye
What is VISIBLE SPECTRUM?
an adjustable resistor used for controlling current in a circuit
What is a RHEOSTAT?
the unit of electrical resistance to an electric current
What is OHM (O)?
thermal or heat-producing current with a high oscillation rate; also known as the violet ray
What is a TESLA HIGH-FREQUENCY CURRENT?