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CHAPTER 13
ELECTRICITY
| Question | Answer |
|---|---|
| Movement of particles around an atom that creates pure energy. | Electricity: |
| Any material that conducts electricity. | Conductor: |
| Flow of electricity along a conductor. | Electric current: |
| Also insulator; material that does not transmit electricity. | Nonconductor: |
| Path of negative and positive electric currents moving from the generating source through the conductors and back to the generating source. | Complete electric circuit: |
| Constant, even-flowing current that travels in one direction only and is produced by chemical means. | Direct current (DC): |
| Apparatus that changes direct current to alternating current. | Converter: |
| Rapid and interrupted current, flowing first in one direction and then in the opposite direction. | Alternating current (AC): |
| Apparatus that changes AC to DC. | Rectifier: |
| Also voltage; unit that measures the pressure or force that pushes electric current forward through a conductor. | Volt (V): |
| Also amp; unit that measures the strength of an electric current. | Ampere (A): |
| 1/1,000 of an ampere | Milliampere (mA): |
| Unit that measures the resistance of an electric current. | Ohm (O): |
| Unit that measures how much electric energy is being used in one second. | Watt (W): |
| 1,000 watts. | Kilowatt (K): |
| Prevents excessive current from passing through a circuit. | Fuse |
| Switch that automatically interrupts or shuts off an electric circuit at the first indication of an overload | Circuit breaker |
| Completes an electric circuit and carries the current safely away | Grounding |
| Use of electrical currents to treat the skin. | Electrotherapy |
| Currents used in electrical facial and scalp treatments. | Modalities |
| Also probe; applicator for directing electric current from an electrotherapy device to the client’s skin | Electrode |
| Negative or positive pole of an electric current. | Polarity |
| Positive electrode, red, marked with P or a plus (+) sign. | Anode |
| negative electrode, black, marked with N or minus (–) sign. | Cathode |
| Constant and direct current. | Galvanic current |
| Extremely low level of electricity, mirrors the body’s natural electrical impulses. | Microcurrent: |
| Also violet ray; thermal or heat-producing current with a high rate of oscillation or vibration that is commonly used for scalp and facial treatments. | Tesla high-frequency current: |
| Also electromagnetic spectrum of radiation; name for all forms of energy. | Electromagnetic spectrum |
| Distance between successive peaks of electromagnetic waves. | Wavelength |
| Distance between two wavelengths. | Waveform |
| Part of the electromagnetic spectrum that can be seen. | Visible spectrum of light: |
| Light at either end of the visible spectrum of light that is invisible to the naked eye. | Invisible light: |
| Also cold light or actinic light; invisible light with a short wavelength. | Ultraviolet light (UV light): |
| Light with longer wavelengths, deeper penetration, less energy, more heat than visible light. | Infrared light |
| Substances that speed up chemical reactions. | Catalysts |
| Also phototherapy; application of light rays to skin for treatment of wrinkles, capillaries, pigmentation, or hair removal. | Light therapy |
| Acronym for light amplification stimulation emission of radiation; medical device that uses electromagnetic radiation for hair removal and skin treatments. | Laser |
| Medical device used to reduce acne, increase skin circulation, and improve the collagen content in the skin. | Light-emitting diode (LED): |
| Medical device that uses multiple colors and wavelengths of focused light to treat spider veins, hyperpigmentation, rosacea and redness, wrinkles, enlarged hair follicles and pores, and excessive hair. | Intense pulse light |
Created by:
chisolma