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Ice Window 2004 ? An Exhibit which allows visitors to watch ice crystals grow on a 17" x 17" chilled glass table.
The ice is illuminated from below with polarized light and viewed via polarized filters mounted on the exhibit.
In a super-cooled condition, freezing can be very rapid producing a distinct crystal structure as seen in the animation above. |
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| Super cooled movie: real time 4.5Mb | Slow Growth movie: real time 11.9 | |||||
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| Super-cooled ice formation. | ||||||
Construction Process My inspiration for this exhibit was the distinctly non-San Francisco memory of ice forming on a steamy bathroom window on a cold winter morning.
I started with a simple mock up using dry ice and a styrofoam ice chest.
The idea has progressed through many iterations and will certainly continue through several more. I am still working out the kinks! |
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| My first mock-up consisted of a glass window on a small styrofoam ice chest filed with dry ice. I put a polarizer filter behind the glass, then sprayed water on the outside of the glass window and watched crystals form on the glass by viewing with another polarizing filter. | ||||||
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| I bought a condensor unit to make my own chiller. | Then I got my hands on an industrial chiller which circulated antifreeze through a thin glass tank I built. | Here it is assembled and stuffed into a cabinet. | ||||
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| The first antifreeze cast quite a green palor! | Eventually I found colorless antifreeze. But, I get stripes from using tempered glass. | I had some problems controlling the pressure of the circulating antifreeze - I broke 3 pieces of 3/8" laminated safety glass! | ||||
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The enlarge version from what I found colorless antifreeze. But, I get stripes from using tempered glass. |
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