A definition for the normal in reflection and refraction?

AI Thread Summary
The term "normal" in the context of reflection and refraction refers to a line that is perpendicular to the surface at the point of incidence. Angles of reflection and refraction are measured from this normal line. Understanding this definition is crucial for accurately analyzing how light interacts with surfaces. The discussion clarifies that "normal" specifically denotes the perpendicular relationship in these optical phenomena. This foundational concept is essential for studying optics effectively.
atom123
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A definition for the normal in reflection and refraction?
 
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atom123 said:
A definition for the normal in reflection and refraction?
"Normal" just means perpendicular. When talking about angles of refraction or reflection, they are measured from a line normal to the surface.

Or do you mean something else?
 
It is the perpendicular at the point of incidence.
 

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