click below
click below
Normal Size Small Size show me how
Chapter 11 Miladys
Some Review Questions- Electricity
Question | Answer |
---|---|
Electricity is | a form of energy that, when in motion exhibits magnetic, chemical or thermal effects |
Two types of electric current: | Direct Current & Alternating Current |
Volt measures | Pressure/Force |
Amp measures | Strength of electric current |
Milliampere measures | One thousandth of an amp |
Ohm measures | Resistance of an electric current |
Watt measures | Amount of energy used in one second |
Kilowatt measures | 1,000 watts |
Prevents excessive current from passing through the circuit | Fuse |
A switch that automatically interrupts/shuts off an electric current at the first indication of overload | Circuit Breaker |
The process of introducing water-soluble products into skin with the use of electric current | Iontophoresis |
Forces acidic substances into deeper tissues | Cataphoresis |
Visible light makes up _____% of natural sunlight | 35 |
Ultra violet rays make up ____% of natural sunlight | 5 |
________ rays make up 60% of natural sunlight | Infrared |
How are infrared lamps used? | For hair/skin treatments at a distance of at least 30 inches (76cm) with an exposure of 5 minutes. |
Negative or positive pole of an electric current | Polarity |
Process used to soften and emulsify grease deposits and blackheads in the hair follicles | Desincrustation |
Wavelength | Distance between successive peaks of electromagnetic waves |