What would you like to do?

Is that true that the color of pure water in a white plastered swimming pool should be blue?

already exists.

Would you like to merge this question into it?

already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

exists and is an alternate of .

If I understand the question, the reason for the blue in the pool water is actually the reflection of the blue sky. You will notice on an overcast day you see the white of the plaster and no blue. Answer After looking at some internet sources (probably reliable), I've found out that in large quantities pure water is indeed blue, due to stronger absorption in the red end of the visible sprectrum than in the blue and green bands. Here are some links: http://www.minerals.net/mineral/oxides/water/water.htm http://www.marine.usm.edu/syllabus/MAR602lecture4-2002.htm http://www.des.ucdavis.edu/courses/est116/116_04.htm Picture of SuperKamiokande being filled with pure water (as pure as viable for about 50,000,000 liters): http://www-sk.icrr.u-tokyo.ac.jp/doc/sk/photo/normal.html (link to photos) http://www-sk.icrr.u-tokyo.ac.jp/doc/sk/photosk_build44.jpg (photo) Answer For the tecnically minded, I've found out another good link to this subject: omlc.org.edu This page has many links to data with absorption coefficient for pure water. This page comes from: spectra/index
60 people found this useful
Thanks for the feedback!

Is it possible to do plaster repair on your swimming pool when there's water in it?

Before starting a project like this, get a second opinion from a  pool contractor. It may seem more expensive, but in the long run,  you will protect your investment. Most l

How soon can you swim in a pool after the plaster is done?

  Answer   Follow the advice of the builder / plasterer. Several days to two weeks. The plaster has to cure. And you don't want foot prints that will collect dust

When can you swim in a newly plastered pool?

  Answer   I am refurbishing a 30+ year old pool. I was told by two pool companies that after the final plaster coat the pool has to be brushed for 3 days to get rid

How straight and flat should the new swimming pool gunite be before plastering?

  The plaster in the bottom is the thickest and is trolled to be straight. The plasterer is not going to use a transit to see if it is level, it's just going to be what it

What would cause the water in a swimming pool to be blue not clear?

You need to add chlorine. I doubt in the above answer that chlorine will clear up a "blue water" situation. BTW, is the water or the pool surface - floor, walls etc - blue - t

Is it okay to put blue food coloring into a swimming pool to make the water appear blue?

The blue color of a swimming pool is not the water that you are seeing, it's actually the reflection of the sky's blue color. When a pool is properly maintained, sanitized wit

Why does the water in a swimming pool look blue?

It is due to the absorption of sunlight. Shorter wavelengths (red/orange) get absorbed by the water at a very shallow depth. The longer wavelengths (blue/purple) get through t