Iridesce Sent
 

 
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iridesce at gmail dot com ::
 
 
 
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Friday, July 08, 2005
 
::I HEREBY INAUGURATE THE LIST OF THINGS I WILL PUT IN MY HOME WHEN I BUILD IT::

Item one.

Faucets that are "canyons" of water flowing over "LEDs that change color as a function of water temperature so you can see when it's hot or cold." Awesome.
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Meanwhile, I play the "Burn Victim or Frostbite Survivor?" game every morning with our Fisher Price-inspired ghetto-gold plumbin fixtures.
 

How does an LED cause the water to still be a different color after it's already flowed past the little bit where the LED is? Those pictures look doctored to me.

(I note that in the one where the water is purple, the *whole room* is purple)
 

Okay, science mode kicks in...

Good question!

The light reflects off the inside walls of the water due to the difference in density between water and air, and it continues to bounce around through the stream. (You can actually see a laser beam bounce through an arc of pouring water!)

Fiber optics work on the same principle.

(And I'll admit the purple one looks really fake; I think they used colored water on that one.)
 

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