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  2. Black-body radiation - Wikipedia

    en.wikipedia.org/wiki/Black-body_radiation

    By subsequently integrating over the solid angle for all azimuthal angle (0 to ) and polar angle from 0 to /, we arrive at the Stefan–Boltzmann law: the power j* emitted per unit area of the surface of a black body is directly proportional to the fourth power of its absolute temperature: =, We used ⁡ = / ⁡ ⁡ =.

  3. Tetrahedral molecular geometry - Wikipedia

    en.wikipedia.org/wiki/Tetrahedral_molecular_geometry

    In a tetrahedral molecular geometry, a central atom is located at the center with four substituents that are located at the corners of a tetrahedron.The bond angles are cos −1 (− 1 ⁄ 3) = 109.4712206...° ≈ 109.5° when all four substituents are the same, as in methane (CH 4) [1] [2] as well as its heavier analogues.

  4. List of RAL colours - Wikipedia

    en.wikipedia.org/wiki/List_of_RAL_colours

    Number Sample Colour name Description, examples RAL 2000: Yellow orange: RAL 2001: Red orange: RAL 2002: Blood orange: U2 line of the Berlin U-Bahn: RAL 2003: Pastel orange: U9 line of the Berlin U-Bahn

  5. File:25 pair color code chart.svg - Wikipedia

    en.wikipedia.org/wiki/File:25_pair_color_code...

    Originally uploaded as 25_pair_color_code_chart.png by en:User:Rfl See en:Image:25_pair_color_code_chart.png for details. File usage The following pages on the English Wikipedia use this file (pages on other projects are not listed):

  6. TIA-598-C - Wikipedia

    en.wikipedia.org/wiki/TIA-598-C

    Print/export Download as PDF; Printable version; Appearance. ... Fiber Color Codes Chart Fiber Number Color 1: Blue 2: Orange 3: Green 4: Brown 5: Slate 6: White 7 ...

  7. Circle - Wikipedia

    en.wikipedia.org/wiki/Circle

    Analogously, a line segment PD through some point D on AB extended bisects the corresponding exterior angle BPQ where Q is on AP extended. Since the interior and exterior angles sum to 180 degrees, the angle CPD is exactly 90 degrees; that is, a right angle. The set of points P such that angle CPD is a right angle forms a circle, of which CD is ...

  8. Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Excel

    Microsoft advises to view and print Excel files for free to use the Excel Mobile application for Windows 10 and for Windows 7 and Windows 8 to upload the file to OneDrive and use Excel for the web with a Microsoft account to open them in a browser. [60] [70]

  9. AOL

    login.aol.com

    x. AOL works best with the latest versions of the browsers. You're using an outdated or unsupported browser and some AOL features may not work properly.