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  2. Omega Speedmaster - Wikipedia

    en.wikipedia.org/wiki/Omega_Speedmaster

    Omega cal. 321 movement. The Speedmaster was not originally designed for space exploration. Instead, it was introduced in 1957 as a sport and racing chronograph following on from the early chronographs of the 1920s and 1930s, including the Omega 28.9 chronograph, which was Omega's first small wrist chronograph, complementing Omega's position as the official timekeeper for the Olympic Games.

  3. Planck relation - Wikipedia

    en.wikipedia.org/wiki/Planck_relation

    The Planck relation [1] [2] [3] (referred to as Planck's energy–frequency relation, [4] the Planck–Einstein relation, [5] Planck equation, [6] and Planck formula, [7] though the latter might also refer to Planck's law [8] [9]) is a fundamental equation in quantum mechanics which states that the energy E of a photon, known as photon energy, is proportional to its frequency ν: =.

  4. Omega ratio - Wikipedia

    en.wikipedia.org/wiki/Omega_ratio

    The standard form of the Omega ratio is a non-convex function, but it is possible to optimize a transformed version using linear programming. [4] To begin with, Kapsos et al. show that the Omega ratio of a portfolio is: = ⁡ ⁡ [() +] + The optimization problem that maximizes the Omega ratio is given by: ⁡ ⁡ [() +], ⁡ (), =, The objective function is non-convex, so several ...

  5. Omega Electroquartz - Wikipedia

    en.wikipedia.org/wiki/Omega_Electroquartz

    Between 1970 and 1971 6,000 beta 21 units were manufactured (Omega's calibre was 1300). To date there are only known of surviving examples from 12 of the original manufacturers and a number of these are not complete watches: Omega Electroquartz date and non date movements front Omega Electroquartz date and non date movements rear. 1.

  6. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    The millimetre (SI symbol: mm) is a unit of length in the metric system equal to 103 metres (⁠ 1 / 1 000 ⁠ m = 0.001 m). To help compare different orders of magnitude, this section lists lengths between 103 m and 10 −2 m (1 mm and 1 cm). 1.0 mm – 1/1,000 of a meter; 1.0 mm – 0.03937 inches or 5/127 (exactly)

  7. Orders of magnitude (time) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(time)

    10 −9: nanosecond: ns One billionth of one second 1 ns: The time needed to execute one machine cycle by a 1 GHz microprocessor 1 ns: The time light takes to travel 30 cm (11.811 in) 10 −6: microsecond: μs One millionth of one second 1 μs: The time needed to execute one machine cycle by an Intel 80186 microprocessor 2.2 μs: The lifetime ...