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Method of using solid angle to calculate electric field intensity in center of charged hemisphere surface

BAI JING(College of Science,Liaoning Technical University,Fuxin,China 123000)  
A new method of solid angle is used to calculate the electric field intensity in the center of the charged hemisphere surface.Althogh this method is different from the integration method of dividing the charged body,the results are the same.And this method is easier.This method provides a new perspective to solve problems as the electric field intensity of even charged body.It makes these problems easier to solve.It is also applicable to calculate the electric field intensities of even charged spherical surface,spherical crown and cylindrical surface.
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