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  2. Magic number (physics) - Wikipedia

    en.wikipedia.org/wiki/Magic_number_(physics)

    For instance, the magic number 8 occurs when the 1s 1/2, 1p 3/2, 1p 1/2 energy levels are filled, as there is a large energy gap between the 1p 1/2 and the next highest 1d 5/2 energy levels. The atomic analog to nuclear magic numbers are those numbers of electrons leading to discontinuities in the ionization energy.

  3. Magic number (programming) - Wikipedia

    en.wikipedia.org/wiki/Magic_number_(programming)

    The term magic number or magic constant refers to the anti-pattern of using numbers directly in source code. This has been referred to as breaking one of the oldest rules of programming, dating back to the COBOL , FORTRAN and PL/1 manuals of the 1960s. [ 1 ]

  4. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    Lotus 1-2-3 spreadsheet (v1) file 00 00 1A 00 00 10 04 00 00 00 00 00 ␀␀␚␀␀␊␄␀␀␀␀␀ 0 wk3 Lotus 1-2-3 spreadsheet (v3) file 00 00 1A 00 02 10 04 00 00 00 00 00 ␀␀␚␀␂␊␄␀␀␀␀␀ 0 wk4 wk5 Lotus 1-2-3 spreadsheet (v4, v5) file 00 00 1A 00 05 10 04 ␀␀␚␀␅␊␄ 0 123 Lotus 1-2-3 spreadsheet (v9 ...

  5. Magic square - Wikipedia

    en.wikipedia.org/wiki/Magic_square

    The number of magic tori of order n from 1 to 5, is: 1, 0, 1, 255, 251449712 ... s = 2, a = 1, c = 1, and d = 10 such that the new magic constant is M = 38. The third ...

  6. Magic constant - Wikipedia

    en.wikipedia.org/wiki/Magic_constant

    The magic constant or magic sum of a magic square is the sum of numbers in any row, column, or diagonal of the magic square. For example, the magic square shown below has a magic constant of 15. For example, the magic square shown below has a magic constant of 15.

  7. Magic circle (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Magic_circle_(mathematics)

    In the example in the figure, the following 4 × 4 most-perfect magic square was copied into the upper part of the magic circle. Each number, with 16 added, was placed at the intersection symmetric about the centre of the circles. This results in a magic circle containing numbers 1 to 32, with each circle and diameter totalling 132. [1]

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    mail.aol.com

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  9. Polydivisible number - Wikipedia

    en.wikipedia.org/wiki/Polydivisible_number

    In mathematics a polydivisible number (or magic number) is a number in a given number base with digits abcde... that has the following properties: [1] Its first digit a is not 0. The number formed by its first two digits ab is a multiple of 2. The number formed by its first three digits abc is a multiple of 3.