Timeline for How brightly does Venus's hot surface glow at night? Could you see it? Could you see well enough to walk around?
Current License: CC BY-SA 4.0
17 events
| when toggle format | what | by | license | comment | |
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| May 9, 2022 at 10:59 | comment | added | Cornelis | @uhoh To see the eternal light on Venus you'll have to go to one of the poles, because of the bended sun rays there. | |
| Apr 27, 2022 at 1:55 | comment | added | uhoh | @OscarLanzi I've gotten used to it :-) | |
| Apr 27, 2022 at 1:49 | comment | added | Oscar Lanzi | Agreed @uhoh. Given the spe tral distribution I am saying, conservatively, that the lighting os less than what the Moon offers at night, and probably a lot less. You are in the dark indeed. | |
| Apr 27, 2022 at 1:39 | comment | added | uhoh | @OscarLanzi this Physics Factbook table (found here) has references that can be checked: [Temperature of a "Red Hot"Object](hypertextbook.com/facts/2000/StephanieLum.shtml and suggests 735 is not likely to be visible, but I'm not sure if they are talking about dark-adapted eyes in a dark room at night, or in a well-lit room where people are normally heating metal. | |
| Apr 25, 2022 at 14:28 | comment | added | uhoh | @Cornelis mostly ≠ all, just read the other parts and use them as a stepping stone to further information. | |
| Apr 25, 2022 at 12:42 | comment | added | Cornelis | @uhoh Your articles are mostly about colour perception and discrimination. But the human colour receptors are not as sensitive as the black/white ones, that's why we don't see colours in the dark. So those articles don't support that the glow could be detected by humans. | |
| Apr 24, 2022 at 23:37 | history | edited | Oscar Lanzi | CC BY-SA 4.0 |
Minor changes to be a bit more precise.
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| Apr 24, 2022 at 23:29 | comment | added | uhoh | Answer(s) to How can I estimate the optical power that a single-color LED generates? can be convoluted with your $I(\lambda)$ | |
| Apr 24, 2022 at 23:11 | history | edited | Cornelis | CC BY-SA 4.0 |
emphasis
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| Apr 24, 2022 at 23:11 | comment | added | uhoh | "...and the glow is not being detected by human." can be supported and verified or just as likely disproven quantitatively. Just for example see Thresholds and noise limitations of colour vision in dim light (also here) to lesser extent What are the limits of human vision? The answer is out there, we don't need to remain in the dark. | |
| Apr 24, 2022 at 21:29 | comment | added | Oscar Lanzi | Please read again. I am not saying it is visible. I am saying the luminosity is so low the setting will be dark. And the glow is not being detected by humans. | |
| Apr 24, 2022 at 21:26 | comment | added | Cornelis | From livescience.com/50678-visible-light.html : "At about 800⁰ C, the energy radiated by an object reaches the infrared. As the temperature increases, the energy moves into the visible spectrum and the object appears to have a reddish glow." The max. temp. on Venus is 482⁰ C, so how can this be visible to the human eye ? | |
| Apr 24, 2022 at 16:47 | history | edited | Oscar Lanzi | CC BY-SA 4.0 |
added 8 characters in body
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| Apr 24, 2022 at 16:05 | history | edited | Oscar Lanzi | CC BY-SA 4.0 |
Extended in response to a comment.
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| Apr 24, 2022 at 15:30 | comment | added | Oscar Lanzi | Hopefully for this question, including the case where all the light is red ... . | |
| Apr 24, 2022 at 15:04 | history | edited | Oscar Lanzi | CC BY-SA 4.0 |
deleted 2 characters in body
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| Apr 24, 2022 at 12:45 | history | answered | Oscar Lanzi | CC BY-SA 4.0 |