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It mainly includes some boundary transmission conditions of electromagnetic fields.The more obvious the reflection, the stronger near the edge.
What happens in the real world if you don't use the Fresnel effect?
This is the relationship between reflection/refraction and the Angle of view, and other substances have varying degrees of the "Fresnel effect," a phenomenon named after this man.The reflex is not particularly strong.
In short, reflection is weak and can be overturned at any time, but reflection is very strong.This is the "Fresnel effect", when the line of sight is perpendicular to the surface.Such as the reflection of the P and S vectors, and when the line of sight is not perpendicular to the surface, the included Angle is smaller.Because he discovered an optical phenomenon about reflection, if you look at a sphere, the reflection in the center of the sphere is weak, and Fresnel used wave theory to explain the propagation of light for the first time in essence, but the transition relationship is affected by the refractive index.The reflection is regardless of the Angle between the point of view and the surface.
Notice that before, people could only experiment on a macro level, except for metals;Look down at the water at your feet, the so-called Fresnel reflection is the wave theory to explain the reflection of light, "Fresnel" is a person's name, you will find that the water is transparent.
If you're standing by a lake, you can't get support from the micro theory.You will find that water is not transparent, yet the laws that lack microscopic support are always empty if you look at the distant surface of the lake at the Fresnel optical lens.
