|MadSci Network: Physics|
reply question to answer http://www.madsci.org/posts/1148865566.Ph.r.html So, light bends when it enters materials with different indecies at an angle. This permit the construction of lenses to redirect light in order to focus, concentrate, diverge, or make parallal the beam. Fields, such as electric (and aparently magnetic due to their relationship) also bend when moving between materials at an angle. However, unlike light, the charecteristic of the materials that cause this is permittivity. Couldn't this also permit the construction of electric/magnetic field lenses that could focus, concentrate, diverge, or make parallal the field. Why not go a step further and try to do the same with gravity. Except, I don't know the charecteristic of a medium akin to permittivity and to index of refraction for gravity. Any truth to this idea? -Roman R.
Re: re3: Do other fields also bend where materials of different densities meet?
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