Search results
Results from the WOW.Com Content Network
For example, in duodecimal, 1 / 2 = 0.6, 1 / 3 = 0.4, 1 / 4 = 0.3 and 1 / 6 = 0.2 all terminate; 1 / 5 = 0. 2497 repeats with period length 4, in contrast with the equivalent decimal expansion of 0.2; 1 / 7 = 0. 186A35 has period 6 in duodecimal, just as it does in decimal. If b is an integer base ...
The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. AD 801–873 ), who formally developed the method (the ciphers breakable by this technique go ...
6.57 h: Most important neutron poison; neutron capture converts 10–50% of 135 Xe to 136 Xe; remainder decays (9.14h) to 135 Cs (2.3 My). 6.2956%: Zirconium: 93 Zr: 1.53 My: Long-lived fission product also produced by neutron activation in zircalloy cladding. 6.1%: Molybdenum: 99 Mo: 65.94 h: Its daughter nuclide 99m Tc is important in medical ...
The jumping height is limited by the EVA space suit's weight on the Moon of about 13.6 kg (30 lb) and by the suit's pressurization resisting the bending of the suit, as needed for jumping. [81] [82] On average the Moon's surface gravity is 1.62 m/s 2 [4] (0.1654 g; 5.318 ft/s 2), about half of the surface gravity of Mars and about a sixth of ...