CHAPTER 1: Introduction to Lasers & Light Therapy with correct answers 100% 2026

CHAPTER 1: Introduction to Lasers & Light Therapy with correct answers 100% 2026 Indications or application - Correct Answer any sign or circumstance indicating that a particular treatment is appropriate or warranted. M.A.S.E.R - Correct Answer microwave amplification by stimulated emission of radiation ultraviolet - Correct Answer radiation that we cannot see; part of the electromagnetic spectrum. Electromagnetic spectrum of radiation - Correct Answer The full range of electromagnetic radiation; the transfer of energy by electromagnetic waves. Photons - Correct Answer minuscule units of electromagnetic radiation or light. wavelength - Correct Answer The distance between two consecutive peaks or troughs in a wave. Nanometer - Correct Answer one billionth of a meter, or 10^-9 micron - Correct Answer one millionth of a meter, or 10^-6 Laser - Correct Answer light amplification by stimulated emission of radiation - A device that emits radiant energy at various frequencies for therapeutic purposes. Optical resonator cavity - Correct Answer The part of the laser that contains the active medium Active medium - Correct Answer The part of a laser that absorbs and stores energy delivery system - Correct Answer The physical hardware needed to transfer the energy from the head of the laser to the treatment site (Metal articulating arms, silica glass fibers, handpieces, etc.) polychromatic - Correct Answer consisting of light of multiple wavelengths, appearing as different colors Monochromatic - Correct Answer light of one wave length, which therefore appears as one color Joules - Correct Answer unit of energy/power radiant energy or fluence - Correct Answer The energy level of a laser; measured in joules Watt - Correct Answer A measure of power equal to one joule of work per second power density - Correct Answer The rate of energy that is being delivered to tissue by a laser light source; a common unit of measurement with continuous lasers (W/cm^2) irradiance - Correct Answer power density measured in watts per centimeter squared (w/cm^2) pulse duration - Correct Answer The duration of an individual pulse of laser light; usually measured in milliseconds. Als