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1. Quantization of Radiation (Planck's Hypothesis) .
2. Blackbody Radiation .
3. Stefan-
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(في حالة مرور تيار في الدائرة الكهربية تنحرف البوصلة نتيجة لتولد مجال مغناطيسي) 2- when a wire or a coil is cutting magnetic field or (vise versa) an induced emf will be produced [ K.E to electric energy ] (dynamo) . 3- when a wire or a coil carrying electric current inserted in magnetic field produced force (motion) [ electric energy to K.E ] . **
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Chapter 1 : Elec. Energy Conversion
1- Introduction . 2- Meaning ofenergy . 3- Forms of energy. 4- Energy resources. 5- Conventionalmethods for elec. Energy conversion . 6- Alternativemethod of elec. Energy conversion . Qu. 1 : write down the advantages ofelec. Energy ? Sol : The main advantages are 1- electrical formcan be transmitted . 2- the electricalenergy easy utilization . 3- if more easilycontrolled . الطاقة :- القدرة على بذل الشغل . Qu 2 : definition of energy Is the ability to do work . Qu 3 : The petroleum stokes can last only about 50 year and so its now to look for substance to generate electrical energy instead of the petroleum . - write down some of the importance steps in thisdirection ? S ... Read more »
Category: Energy Conversion - 1 |
Views: 433 |
Added by: ahansaary |
Date: 2013-03-18
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الصورة العامة - y' = F(x,y)
or M(x,y)dx + N(x,y)dy = 0 1- Separable equations : ويتم فيها فصل x عن y (فصل المتغيرات) to solve the separable equation : 1. set y' = dy/dx dy/dx = f(x)g(y) 2. dy/g(y) = f(x)dx 3. by integration we obtain the solution . :: Special case :: - If the DE in the form y' = F ( ax + by + c ) to solve this equation we set [ ax + by + c = z ] 2- Homogeneous equations : F(x,y) is called homogeneous of degree if F( tx, ty ) = tn F(x,y) إذا كان كل حد من حدود المعادلة من نفس الدرجة تبقى homogeneous or x/y or y/x a DE M(x,y)dx + N(x,y)dy = 0 is called homogeneous if M(x,y) & N(x,y) are hom ... Read more » |
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Differential Equations divided two branches :
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