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M Intro to Therm Agt


conduction heat transfer resulting from energy exchange by direct collision between molecules of two materials at different temperatures. Heat is transferred by conduction when the materials are in contact with each other
convection heat transfer through direct contact of a circulating medium with material of a different temperature
conversion heat transfer by conversion of a nonthermal form of energy, such as mechanical, electrical or chemical energy, into heat
diathermy the application of shortwave or microwae electromagnetic energy to produce heat within tissues, particularly deep tissues
fluidotherapy a dry heating agent that transfers heat by convection. it consists of a cabinet containing finely ground particles of cellulose through which heated air is circulated
Hubbard tank a large, stainless steel whirlpool designed for immersion of the entire body that is used primarily for the treatment of patients with extensive burn wounds
paraffin a waxy substance that can be warmed and used to coat the extremities for thermotherapy
radiation transfer of energy from one material to another without the need for direct contact or an intervening medium
specific heat the amount of energy required to raise the temperature of a given weight or a material by a given number of degrees, usually expressed in J/g/C
thermal conductivity the rate at which a material transfers heat by conduction, usually expressed in (cal/second)/(cm2xC/cm)
ultrasound sound with a frequency greater than 20,000 cycles per second that has thermal and nonthermal effects when applied to the body
vapocoolant spray a liquid that evaporates quickly when sprayed on the skin, causing quick superficial cooling of the skin
vasoconstriction a decrease in blood vessel diameter. cold generally causes vasoconstriction
vasodilation an increase in blood vessel diameter. heat generally causes vasodilation
Created by: jessigirrl4