Timeline for Why is deep open ocean blue?
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 2 at 9:17 | comment | added | Puk | @MeatballPrincess "Black" would mean none of the incident light comes back out, which is obviously not true. You may ask what the apparent color would be if the water were illuminated by "white" light. The answer is still bluish, I believe mainly due to the second mechanism I mentioned. | |
| Jan 2 at 9:14 | history | edited | Qmechanic♦ |
edited tags
|
|
| Jan 2 at 9:12 | answer | added | g s | timeline score: 0 | |
| Jan 2 at 8:35 | comment | added | Meatball Princess | @Puk meaning pure deep water will be almost black if not for reflection of the skys color. | |
| Jan 2 at 2:54 | comment | added | Puk | Water has a higher refractive index at lower wavelengths (bluish colors), making it slightly more reflective there. Water is more absorptive at higher wavelengths (reddish colors), which means light scattered back up from impurities beneath the surface is bluish. I suspect the latter effect is primarily responsible for the color in the case of deep ocean. See also en.wikipedia.org/wiki/Color_of_water. | |
| Jan 2 at 2:26 | comment | added | Meatball Princess | @gs my question would be why the coolade ocean is not black. Note you're not looking at a bottle of coolade, but an infinite depth coolade ocean. The red light goes down but not up. | |
| Jan 2 at 1:29 | comment | added | g s | If we put lots and lots of red koolade in the ocean and replace your question with "red" and "koolade" for blue and water, is it the same question? | |
| Jan 2 at 0:59 | comment | added | Meatball Princess | @rob I'm talking about deep ocean where the blue light inside the water cannot be scattered back. Of course a bathtub is blue because water is blue. Not related to my question. | |
| Jan 2 at 0:58 | history | edited | Meatball Princess | CC BY-SA 4.0 |
added 151 characters in body
|
| Jan 2 at 0:57 | comment | added | rob♦ | If you have a white bathtub and twenty minutes to fill it all the way up, you should be able to convince yourself that water is blue. You may also discover that your local blue-colored swimming pool has white paint on its walls and bottom. | |
| Jan 2 at 0:50 | history | asked | Meatball Princess | CC BY-SA 4.0 |