Timeline for Why do colours of object change due to incident light?
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| Jul 25, 2020 at 10:19 | comment | added | nasu | Re-emission of light is irelevant for the question. It happens only for specific materials. | |
| May 12, 2017 at 15:26 | comment | added | jkej | @EdgarBonet I wouldn't say that it's a good explanation of those phenomena. I would say that it is cryptic explanation since it doesn't use any of the terms (photoluminescence, phosphorescence, fluorescence) that are normally used to describe them. I had to read this answer a couple of times to figure out what "absorbtion-and-emission" actually referred to (I thought maybe it referred to thermal radiation, which would also have been strange). Like you, I can't see how this answer is relevant to the question at hand, so it's a pity that it is currently the top answer and has been accepted. | |
| May 11, 2017 at 19:19 | comment | added | Edgar Bonet | This is a good explanation of phosphorescence and fluorescence, but completely irrelevant to the original question. | |
| May 11, 2017 at 18:32 | comment | added | jkej | How do you know that the red light seen from a "green" leaf or a "blue" pen must have been absorbed and re-emitted as opposed to reflected? That they are perceived as green and blue in white light does not mean that they absorb all red light. How would reflected light be perceived differently by a casual observer than absorbed and re-emitted light? | |
| May 11, 2017 at 14:02 | history | edited | Steeven | CC BY-SA 3.0 |
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| May 11, 2017 at 13:50 | history | edited | Steeven | CC BY-SA 3.0 |
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| May 11, 2017 at 13:37 | history | edited | Steeven | CC BY-SA 3.0 |
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| May 11, 2017 at 12:39 | history | edited | Steeven | CC BY-SA 3.0 |
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| May 11, 2017 at 9:29 | history | edited | Steeven | CC BY-SA 3.0 |
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| May 11, 2017 at 9:25 | comment | added | Ashwin | I did not even think about emission! Thanks for an easy-to-understand, yet detailed reply. | |
| May 11, 2017 at 9:19 | vote | accept | Ashwin | ||
| May 11, 2017 at 9:13 | history | edited | Steeven | CC BY-SA 3.0 |
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| May 11, 2017 at 9:07 | history | edited | Steeven | CC BY-SA 3.0 |
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| May 11, 2017 at 8:15 | history | edited | Steeven | CC BY-SA 3.0 |
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| May 11, 2017 at 8:10 | history | answered | Steeven | CC BY-SA 3.0 |