Ever wonder why the water in your swimming pool is blue?

Ever wonder why the water in your swimming pool is blue?

Ever wonder why the water in your swimming pool is blue?

Why is water blue?

by Eric Herman, Aqua Magazine

When you ask most anyone, “Why is water blue?” they are likely to say it’s reflecting the color of the sky. Given that we know that liquid water is a highly reflective material, and given that a cloudless sky in the daytime is, indeed, blue, that conventional wisdom seems reasonable.

I was recently discussing this issue with my friend, David Knox, president of Lightstreams Glass Tile, a manufacturer of glass-tile products that have unique optic qualities based on Knox’s prior career inventing LASER applications for high tech industries. David’s a fascinating guy, I daresay one of the true geniuses I’ve ever known. As is the case with most discussions we have, he offered insights that go well beyond my common understanding of science and nature. In this case, as he explained, the blueness of water is a far more complex and intriguing subject than I had ever considered.

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