Transparent - completely allowing light to pass through, Translucent - partially allowing light to pass through, Opaque - a material that does not allow any light to pass, Light source - an object that gives off light, Angle - angle of light refers to various angles in optics, primarily the angle of incidence, angle of reflection, and angle of refraction, which describe how light interacts with surfaces., Mirror - a surface, typically of glass coated with a metal amalgam, which reflects a clear image:, Relfection - the bouncing of energy waves off the surface of, refraction - the bending or redirection of energy waves as, prism  - a glass or other transparent object in the form of a prism, especially one that is triangular with refracting surfaces at an acute angle with each other and that separates white light into a spectrum of colours., Visible light - the wavelengths of light that are visible to the human eye,

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