What is Reflection? Definition, Meaning & Example
Reflection is the bouncing back of waves, light, or sound from a surface.
TL;DR: Reflection is the bouncing back of waves, light, or sound from a surface.
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Reflection: Reflection is the bouncing back of waves, light, or sound from a surface.
Explanation
Reflection occurs when waves encounter a boundary and bounce back into the original medium. The law of reflection states that the angle of incidence equals the angle of reflection. Smooth surfaces produce clear reflections while rough surfaces scatter light and produce diffuse reflections. Mirrors reflect light with high efficiency. Water surfaces can reflect light, creating mirror-like images. Sound reflects from hard surfaces creating echoes. Curved mirrors concentrate or diverge reflected light. Understanding reflection is essential for mirrors, telescopes, and many optical instruments.
Example
Looking at your image in a mirror is possible because light reflects off the mirror surface back to your eyes.
Frequently Asked Questions
Why is the angle of incidence equal to the angle of reflection?
This occurs because of how waves interact with surfaces. The wave bounces back following the geometry of the surface. Both angles are measured from a normal line perpendicular to the surface, creating the equal angle relationship.
How is reflection different from refraction?
Reflection bounces waves back into the original medium while refraction bends waves as they pass into a new medium. Reflection returns to the source while refraction continues through the new medium at a different angle.
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