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The glow emitted by a substance exposed to external radiation is called fluorescence (Penn Foster page 64 of the Light Study Guide.

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10y ago
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8mo ago

called luminescence. It occurs when the substance absorbs energy from the external radiation and re-emits it as light. Luminescence can be either fluorescent, phosphorescent, or other forms based on the time it takes for the substance to re-emit the absorbed energy as light.

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13y ago

fluorescence

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Q: The glow emitted by a substance exposed to external radiation is?
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