the metric unit of light intensity

the distance from a lens to its principle focus (the point at which all the rays converge)

an object that reflects light rays

the measure of how bright the light from a light source is

the angle of incidence must be equal to the angle of reflection

a transparent object that uses the property of refraction to magnify or reduce images

electromagnetic radiation of any wavelength, usually used in relation to the visible portion of the spectrum

an object that emits light waves

an imaginary line drawn perpendicular to the surface of a mirror or transparent substance through which light travels

an image produced in front of a mirror

the return of waves after they strike a surface

the bending of waves as they pass from one medium into another

the image that appears to exist beyond a mirror

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