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Was the physics in old TV shows always accurate or just for drama?
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[QUOTE="256bits, post: 6016896, member: 328943"] Research: Of course some factors would come into play such as freshly packed or settled, fineness of the powder, shape of particles ( flake, round, jagged ), range of size of particle. All would have an effect upon void space. Impurities you have already mentioned, along with wet or dry. For example: Salt ( NaCl ) has a density of 2165 kg/cubic meter. In granulated from fine - 1378, and in course, 1282, and rock - 1722 wheat - kernel 785 , cracked 561, flour 481 ( no solid form of wheat, it is all bulk packing, density dependent upon particulate size ) iron in gram / cm cubic ( kg/ cubic meter ) [ pounds / cubic foot ] solid - 7.87 ( 7870 ) ore ? ( 2595 ) [ 162 ] [COLOR=#ff4d4d]shot 0.61 ( 610 ) powder 0.56 ( 560 )[/COLOR] ?? ( 2804 ) [ 175 ] gold g/cubic cm ( kg / cubic meter ) [ pounds / cubic foot ] solid 19.32 ( 19320 ) [ 1204 ] nugget ? ( ? ) [COLOR=#ff0000]powder ?? ( 849 ) [ 53 ][/COLOR] [URL]https://physics.info/density/[/URL] [URL]http://hapman.com/education-support/bulk-material-density-guide/[/URL] http://www.anval.net/downloads/bulk%20density%20chart.pdf Some sites where I obtained my numbers. ( double check to see if they are OK , as mistakes do happen ) Salt and wheat make sense, but the metals seem to offer a drastic reduction of density in powdered form, per the highlighted in red. I do wonder if the highlighted are missing another digit :confused: (Portland cement is around 1300 kg/ cubic meter, and try throwing a bag of that around. ) Conclusion: Even if the chest was filled with some really fake gold for the color blind in the form of iron powder - 175 pounds/ cubic foot, a material with a density less than gold - it would be difficult to throw that around, but movable with some effort. If they had a bushel of wheat in the chest, then maybe. A bushel, in volume, is a bout a fifth more than a cubic foot. Wheat, kernel form, of the hard red spring variety is 60 pounds a bushel. Actually all wheat is 60 pounds a bushel, regardless of density. Farmers get paid $/bushel. One weighs the gross, unloads the truck, subtracts the tare truck weight giving the net weight of wheat in pounds, and then converting that weight into bushels. Of course, chaff and other non-wheat impurities are taken into account by putting a sample of the load through a screen. A high chaff load will end up with less bushel. ( less dense ). ( But, while a bushel was originally a unit of volume, it has evolved and presently used as a unit of weight for commerce. Not sure what that has to do with gold dust in a chest ) But, wheat falling off a cliff, would not blow away in the wind but fall in a clump, with the lighter chaff somewhat separated from the kernels. Same for wheat flour, although the clump would be dispersed somewhat more downwind than the kernel wheat. [/QUOTE]
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Was the physics in old TV shows always accurate or just for drama?
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