chapter 13 Flashcards
electricity is a form of energy that, when in motion exhibits, thermal,magnetic or chemical effects
all
lightning bolts travel through the air at speeds of up to how many miles per hour?
60,000
a substance that is particularly good conductor of electricity is what?
copper
the path of an electric current from the generating source back to the original source is a
complete circuit
rubber, silk, wood, and glass are common examples of what?
insulators
rapid and interrupted current that flows in one direction and then in the opposite direction is
alternating current
electricity travels how many miles per second
186,00
the unit that measures the pressure or face that pushes the flow of electrons forward through a conductor is a
volt
the current for facial and scalp treatments is measures in what ?
milliamperes
a measurement of how much electricity is being used in 1 second is a
watt
the special device that prevents excessive current from passing through a circuit is a
fuse
the electrical appliance connection that supplies current to the circuit is the what
live connection
electronic facial treatments are commonly referred to as
electrotherapy
an applicator that directs electric current from a machine to a clients skin is a
electrode
the negative or positive pole of an electric current is referred to as a
polarity
the positive electrode is called a
anode
infusing water- soluble products into the skin with the use of electric current is known as
iontonphoresis
cataphoresis forces acidic substances into deeper tissues using galvanic current from he
positive toward the negative pole
the process use et o treat acne and milia and softer and emulsify deposits in the hair follicles is
sesincrustation
thermal or heat proceeding current with a high rate of oscillation or vibration is
violet ray
the type of current that should not be used on clients who are pregnant, have high blood pressure or have a pacemaker is
tells high frequency
the distance between two successive peaks is called
wavelength
rays with short wavelengths that are the least penetrating , produce chemical effects, and kill germs are
ultraviolet rays
rays with long wavelengths that penetrate more deeply and produce more heat than visible light are
infrared rays
laser work by a process that terms the light from the laser into heat called
photothermolysis
substances that speed up chemical reactions
catalysts
unit that measures the strength of a electric current
ampere
unit that measures the resistance of an electric current
ohm
currents used in electrical facial and scalp
modalities
extremely low level of electricity that mirrors the body’s natural electrical impulses
microcurrent
color component within the skin such as blood or melanin
chromophore
