Скачать или смотреть Electromagnetics | 4-13: Electrical Boundary Conditions | Purdue University

Let's delve into the complexities of the electric field at the boundary between two dissimilar dielectric materials. In this insightful lecture, Purdue University Electrical and Computer Engineering Professor, Dr. Michael Melloch, guides you through the decomposition of the electric field into tangential and normal components. This video highlights how the uncertainty in electric field components is resolved by applying Maxwell's equations, specifically the conservation of the electric field intensity and Gauss's Law. The laws of refraction, which also explain light bending, describe the discontinuity in the normal component when the permittivities of the two materials differ. The presence of free charge introduces an additional variable into the equations, altering both components of the electric field. However, the law of refraction remains valid even in such scenarios.

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