Question

Data are written onto a magnetic recording disk with an arcal density ist 33 Ghitsin ?. By using some educaich guesses. convert this areal density into other units: (a) bits per cross-sectional area of it hydrogen atom. (b) copies of the coniplete plays hy William Shakespeare (i.e. their information content) per postage stamp. Compare this density of intormation storage to that of the human genome. Consider an isotropic cubic ferromagnet (lattice parame- tera) in a magnetic field, with Hamiltonian #=-) Es, $, +41 {B.S;. 19 t'9Rjuj! 415; 5 + 5'5'9) 25 costq. (R; – R;)) V

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Answer 1

Answer: cinen, Hamiltonian! Ñ JE S Sî +948 ? Bos; <ig) The Hanifonian of an é in H- reveals the average energy of 25 abitslina j.e 3.9x10's bits 1m2 a.) for Too?, where radii of hydrogen atom ao 25 abit Tao? X Rao 2} 4 ЯКs ax 120X10 will lead to 3.4x10 bits , Hahom area, b) - 30000 words, As from existing data Shakespene wrote, around play of 20000 which gets around 35 Mbits! DNA stores a bit per base pair, Thus, it would be equivalent to 68105 abits line