oh for kripesake, what a time to be doing away with the Open Forum, just when all the ChemicalAnalyticalPhyswangbang threads are starting up. the next thing you know, we'll be discussing the atomic structure of the coin surface and how it relates to tone quality and the subtler differences in that which can allow us to determine AT or NT with an electron microscope!!! wait a minute, we already had that thread a while ago!!
BTW, nic-a-date works because when you put a drop on where the date used to be, it suddenly re-appears. that's how simple it is.
I'm gonna make one more post. There is a lot of inaccurate science here. Most people here are laymen and don't want to be 100% accurate about science and don't want to be corrected. I feel no need to correct it all either. But I want to make sure folks are aware.
Quickly: Water is basicly incompressible. Water density changes significantly with temperature (inversely). When water crystalizes into ice it expands. This is a very unusual characteristic that water possesses an it is unrelated to compressibility or normal temperature effects.
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BTW, nic-a-date works because when you put a drop on where the date used to be, it suddenly re-appears. that's how simple it is.
Quickly: Water is basicly incompressible. Water density changes significantly with temperature (inversely). When water crystalizes into ice it expands. This is a very unusual characteristic that water possesses an it is unrelated to compressibility or normal temperature effects.
--Jerry