Tuesday, August 28, 2012

Mercury video idea fail

I had an idea of filling a small pipe that was capped at the bottom with mercury.   I put a ball valve on the top so I could close it up and trap the mercury inside the pipe.

The contraption was put in ice water with salt in it so I could subcool the entire thing.  
I then closed the ball valve and  placed the mercury-filled pipe inside a clear,  one gallon container of hot water. 

The idea was to show how mercury expands and was supposed to rupture the pipe.   Just like over-heating a bulb-type thermometer will cause the glass to shatter,   or how water freezing in a pipe breaks pipe fittings,  I hoped this experiment would show that in real time.

I put it in the hot water and nothing happened. 

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