Joke of the day..:)
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oldie yet nice ;)
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Well, joke's on him: http://www.youtube.com/watch?v=WaUzu-iksi8[^]
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Now explain why this is obviously a laughable question.
FILETIME to time_t
| FoldWithUs! | sighist | WhoIncludes - Analyzing C++ include file hierarchy -
Hard drive density is measured in bits per square inch, the maximum of which is currently (5/2011) 625 gigabits per square inch. This means that a gigabyte of data will take up about 8.25 millimeter2. The weight of the substrate (usually glass and ceramic) and the magnetic layer which actually holds the magnetic grains. The magnetic layer is usually made of a mostly cobalt alloy of 10-20 nm thickness. Assuming 10nm thickness to make the math easier, This gives us about 8.25 * 1013 nm3 of magnetic layer material for one gigabyte. Given the density of cobalt, this means that we can approximate the weight at 0.734966 micrograms. I'm not sure how much the substrate weighs, but it's almost certainly more than that. Previously on "How much does a gigabyte weigh on a hard disk?" 2009: Areal Density 400 Gbit/in2 = 1.1518 micrograms (ref) 2010: Areal Density 541.4 GBit/in2 = 0.84817 micrograms (ref)
