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List of number-one artists by total weeks at number one Position Artist Weeks at No. 1 1 Rod Stewart 7 2 Wings 5 3 Johnnie Taylor 4 Elton John Kiki Dee 6 Paul Simon 3 The Four Seasons Diana Ross Wild Cherry 10 Starland Vocal Band 2 The Manhattans Chicago 13 Bay City Rollers 1 C.W. McCall Barry Manilow Ohio Players Rhythm Heritage The Miracles
The winding number is closely related with the (2 + 1)-dimensional continuous Heisenberg ferromagnet equations and its integrable extensions: the Ishimori equation etc. Solutions of the last equations are classified by the winding number or topological charge (topological invariant and/or topological quantum number).
The f-number N is given by: = where f is the focal length, and D is the diameter of the entrance pupil (effective aperture).It is customary to write f-numbers preceded by "f /", which forms a mathematical expression of the entrance pupil's diameter in terms of f and N. [1]
[1]: 466 A Nusselt number of order one represents heat transfer by pure conduction. [1]: 336 A value between one and 10 is characteristic of slug flow or laminar flow. [2] A larger Nusselt number corresponds to more active convection, with turbulent flow typically in the 100–1000 range. [2]
In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable.The general form of its probability density function is = ().
"Walk Like an Egyptian" logged two weeks at number-one in 1986 and two more weeks at number-one in 1987, summing up to four weeks at the top. "Say You, Say Me" by Lionel Richie concluded another four week run that began in 1985. 1986 is the year with the third largest number of number-one songs, with 30 songs reaching the #1 spot.
An electron state has spin number s = 1 / 2 , consequently m s will be + 1 / 2 ("spin up") or - 1 / 2 "spin down" states. Since electron are fermions they obey the Pauli exclusion principle : each electron state must have different quantum numbers.
The difference between any perfect square and its predecessor is given by the identity n 2 − (n − 1) 2 = 2n − 1.Equivalently, it is possible to count square numbers by adding together the last square, the last square's root, and the current root, that is, n 2 = (n − 1) 2 + (n − 1) + n.