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15 Cards in this Set
- Front
- Back
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White Light is actually |
a combination of all the spectral colors |
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Variations in lighting and surroundings can affect a diamond's |
appearance |
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The angle of incidence always equals |
angle of reflection |
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The flashes of color you see in a polished diamond are called |
fire |
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The passage of light into or through a material is called |
transmission |
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The combined effect of all the diamond’s surface and internal white light reflections is its |
brightness |
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The higher the optical density of a material, the |
more it slows light down. |
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Grease on the pavilion of a diamond results in |
more light leakage through the pavilion |
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Visible light is |
a form of radiant energy. |
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The difference between the RI values of specific violet and red wavelengths of visible light for a given material is its |
dispersion |
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The relative size, arrangement, and contrast of bright and dark areas that result from a diamond’s internal and external reflections is called |
pattern |
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The change in speed and possible change in direction of light as it travels from one material to another is called |
refraction |
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The flashes of light and the contrasting dark areas you see when the diamond, the light, or the observer moves are called |
scintillation |
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In order to exit a diamond, light must strike an inner surface |
inside the critical angle |
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The appearance of a material’s surface in reflected light is called |
luster |
