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Light : (Lumen (the SI unit of luminous flux, equal to the amount of light…
Light :
Lumen
the SI unit of luminous flux, equal to the amount of light emitted per second in a unit solid angle of one steradian from a uniform source of one candela
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Fluorescent
the visible or invisible radiation emitted by certain substances as a result of incident radiation of a shorter wavelength such as X-rays or ultraviolet light
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Refraction
the of light, radio waves, etc., being deflected in passing obliquely through the interface between one medium and another
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Law of reflection
the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. Furthermore, the angle of reflection is equal to the angle of incidence
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Normal
the line that divides the angle between the incident ray and the reflected ray into two equal angles
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Concave lens and mirror
a lens that possesses at least one surface that curves inwards: a mirror with a curved reflecting surface
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Convex lens and mirror
a lens that's thicker in the middle and thinner at the edges: a curved mirror in which the reflective surface bulges toward the light source
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