chidsey@smoke.brl.mil (Irving Chidsey) (10/25/90)
From: Irving Chidsey <chidsey@smoke.brl.mil> In article <1990Oct24.012029.19707@cbnews.att.com> deichman@cod.nosc.mil (Shane D. Deichman) writes: < <From: deichman@cod.nosc.mil (Shane D. Deichman) < <In article <1990Oct19.032216.11798@cbnews.att.com> gabriele@riverdale.toronto.edu (Mark Gabriele ) writes: <> <>Test Able was above ground; test Baker was a shallow-water burst, and <>test Charlie was to be a deep-water burst. Test Charlie was never <>conducted. It is interesting to note that they physicists present theorized <>that the pressure wave from the deep-water blast would actually create a <>large block of ice as one of its effects. <> <No flame, but I find this hard to believe since water is one of the <few substances which is actually densest as a liquid (at 4 degrees <C., with one atmosphere pressure). Perhaps the scientists in question <forgot about the hydrogen bonding properties of water.... < <-shane < That is at 'normal' pressures. Given enough pressure, the bonds are crushed, there is a higher order phase change to a denser form. There are several ices that form a realy high pressure, thousands and millions of atmospheres. Most ( all? ) materials undergo such phase changes to denser varieties as the pressure increases. There is also a temperature effect. The resulting phase diagrams can be quite complex. Some Dense solids return to normal forms when the pressure is removed, but others may be stable, once formed, if the temperature is low enough. Irv -- I do not have signature authority. I am not authorized to sign anything. I am not authorized to commit the BRL, the DOA, the DOD, or the US Government to anything, not even by implication. Irving L. Chidsey <chidsey@brl.mil>