QUIZ:
Interference Colors
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Describe the Interference Colors |
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Study the sample in the rollover above. Then choose the description below that most accurately describes the sample. |
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| This sample contains grains of only one type of mineral that exhibits maximum interference colors of first-order gray |  |
| This sample contains grains of only one type of mineral that exhibits maximum interference colors of second-order pink |  |
| This sample contains grains of only one type of mineral that exhibits maximum interference colors of third-order pink |  |
| This sample contains grains of only one type of mineral that exhibits maximum interference colors of fourth or fifth-order green |  |
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BIREFRINGENCE is best described by which of the following statements? |
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| Birefringence is the difference between the maximum index of refraction and minimum index of refraction within a mineral grain. | |
| Birefringence is the difference between the maximum speed of light and minimum speed of light within a mineral grain. | |
| Birefringence is the difference in distance traveled by the fast and slow light rays within a mineral grain. | |
| Birefringence is the color that results from the adding of both the fast and slow rays when they are resolved by the analyzer . | |
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If upon passing through a mineral light experiences retardation of 7000 Angstroms (the wavelength of red light), then when the light is resolved at the analyzer we will see... |
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Intense RED light |
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Weak RED light |
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Intense BLUE light |
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BLACK (No light at all.) |
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