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macca734 wrote:I also remember the ballsed-up demolition of one of the last massive in the same area but the name of the yard escapes me. One day I was passing and this big crane was perfectly triangular, looking like a permanent fixture and the next it was snapped off with one end on the ground and the other still attached.
allyharp wrote:Pripyat wrote:Liquid Gas
How the feck does that work?
Come to think of it, i think do have a (very) vague recollection of dual state materials from physics last year...
macca734 wrote:allyharp wrote:Pripyat wrote:Liquid Gas
How the feck does that work?
Come to think of it, i think do have a (very) vague recollection of dual state materials from physics last year...
Yep, you cool a gas enough, it becomes a liquid.
allyharp wrote:But if it becomes a liquid it's no longer a gas any more, right?
Apollo wrote:allyharp wrote:But if it becomes a liquid it's no longer a gas any more, right?
Well... yes and no
Unfortunately, there's a cheeky little thing called the triple point, neatly defined as:
A term in physics, the triple point of a substance is the temperature and pressure at which three phases (gas, liquid, and solid) of that substance may coexist in thermodynamic equilibrium.
In other word, you can have a pot (albeit a rather sophisticated pot) in whch you can have an amount of a substance, and within it, the substance exists simultaneously as a solid, a liquid and a gas.
The most common one is the water triple point cell, which can be made and maintained fairly easily in any decent lab, as it works at 0.01 C, where its assigned value on is 273.16 K (0.01 C), and is used to establish a temperature standard.
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