Electrotherapy and Actinotherapy: A Textbook for Student Physiotherapists |
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Page 64
... induced by a current varying at the rate of one ampere per second . In all ... SELF - INDUCTION . When a current flows through a coil of wire it sets up magnetic ... EMF . This " forward " EMF prolongs the 64 ELECTROTHERAPY AND ACTINOTHERAPY.
... induced by a current varying at the rate of one ampere per second . In all ... SELF - INDUCTION . When a current flows through a coil of wire it sets up magnetic ... EMF . This " forward " EMF prolongs the 64 ELECTROTHERAPY AND ACTINOTHERAPY.
Page 65
... EMF applied , the dotted line the current which is obtained . As with mutual induction , the strength of the induced ... self - induced EMF than the alternating main current , which only alternates fifty times per second , while a constant ...
... EMF applied , the dotted line the current which is obtained . As with mutual induction , the strength of the induced ... self - induced EMF than the alternating main current , which only alternates fifty times per second , while a constant ...
Page 85
... self - induced EMF which is set up in the inductance as the current varies in intensity . The self - induced EMF retards the rise of current and prolongs the flow when the intensity is falling . So when the excess elec- trons from the ...
... self - induced EMF which is set up in the inductance as the current varies in intensity . The self - induced EMF retards the rise of current and prolongs the flow when the intensity is falling . So when the excess elec- trons from the ...
Contents
CHAPTER PAGE I STATIC ELECTRICITY | 3 |
CURRENT ELECTRICITY | 18 |
CHEMICAL EFFECTS OF CURRENT | 32 |
Copyright | |
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Electrotherapy and Actinotherapy: A Textbook for Student Physiotherapists Edward Bellis Clayton,Pauline M. Scott No preview available - 1965 |
Common terms and phrases
absorbed ampere anode apparatus applied atom blood supply cable capacity cathode cause cells chemical circuit condenser conductor connected current flows current passes denervated muscle diathermy dielectric constant direct current discharge dose duration effect electric field electromagnetic electromagnetic induction energy epidermis erythema faradic filament frequency grid heat high-frequency current hydrogen hydroxyl impedance impulses increased inductance infra-red rays innervated insulating intensity of current ionisation ions lesion lines of force magnetic field material metal metal rectifiers meter method milliampere milliseconds molecules move movement muscle contraction negative charge obtained occur oscillator output p-type semiconductor parallel pathway patient physiotherapist placed plates pole positive charge potential produced quantity of electricity reaction reduced reflector resistance rise secondary coil self-induced EMF short-wave diathermy shown in Fig skin solution surface surged switch temperature treatment head tube turns of wire ultra-violet rays valve varies vasodilatation voltage volts wave-length wireless waves wound zinc