What is the definition of "reflection" in scientific terms?

In scientific terms, "reflection" primarily refers to the phenomenon where light (or other waves) bounces off a surface. When light hits a reflective surface, such as a mirror or calm water, it creates an image of the object that emitted the light. This concept is based on the law of reflection, which states that the angle of incidence is equal to the angle of reflection. Thus, the correct understanding of reflection includes not only the formation of an image but also the underlying principle of how light interacts with surfaces, making it an essential aspect of optics in science.

The other concepts mentioned, such as a physical change in state or recycling materials, pertain to different scientific phenomena. Energy transfer involves different processes like conduction, convection, or radiation, and does not specifically describe the visual representation created through reflection.