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  2. Windows 3.1 - Wikipedia

    en.wikipedia.org/wiki/Windows_3.1

    Windows 3.1 is a major release of Microsoft Windows.It was released to manufacturing on April 6, 1992, as a successor to Windows 3.0.Like its predecessors, the Windows 3.1 series run as a shell on top of MS-DOS; it was the last Windows 16-bit operating environment as all future versions of Windows had moved to 32-bit.

  3. iPhone OS 3 - Wikipedia

    en.wikipedia.org/wiki/IPhone_OS_3

    Upgrading to iPhone OS 3 was free for iPhone. Upgrading to iPhone OS 3 originally cost iPod Touch users $9.95; [9] updating to 3.1.x from 2.x cost only $4.95. [10] [11]iPhone OS 3 was the last major version of iOS for which there was a charge for iPod Touch users to upgrade.

  4. Matter - Wikipedia

    en.wikipedia.org/wiki/Matter

    3.1.4.1 Two meanings. 3.2 Leptons. 4 Phases. 5 Antimatter. 6 Conservation. ... The continuity and difference between Descartes's and Aristotle's conceptions is ...

  5. Rotation formalisms in three dimensions - Wikipedia

    en.wikipedia.org/wiki/Rotation_formalisms_in...

    The engineering and robotics communities typically use 3-1-3 Euler angles. Notice that after composing the independent rotations, they do not rotate about their axis anymore. The most external matrix rotates the other two, leaving the second rotation matrix over the line of nodes, and the third one in a frame comoving with the body.

  6. Flip-flop (electronics) - Wikipedia

    en.wikipedia.org/wiki/Flip-flop_(electronics)

    The difference is that NAND logical gates are used in the gated D latch, while SR NAND latches are used in the positive-edge-triggered D flip-flop. The role of these latches is to "lock" the active output producing low voltage (a logical zero); thus the positive-edge-triggered D flip-flop can also be thought of as a gated D latch with latched ...

  7. Effect size - Wikipedia

    en.wikipedia.org/wiki/Effect_size

    In statistics, an effect size is a value measuring the strength of the relationship between two variables in a population, or a sample-based estimate of that quantity. It can refer to the value of a statistic calculated from a sample of data, the value of one parameter for a hypothetical population, or to the equation that operationalizes how statistics or parameters lead to the effect size ...

  8. SAML 1.1 - Wikipedia

    en.wikipedia.org/wiki/SAML_1.1

    Versions 1.0 and 1.1 of SAML are similar. See SAMLDiff [4] for specific differences between the two standards. This article concentrates on SAML 1.1 since it is an important standard upon which many other standards and implementations depend.

  9. Display aspect ratio - Wikipedia

    en.wikipedia.org/wiki/Display_aspect_ratio

    This aspect ratio was chosen as the geometric mean between 4:3 and 2.35:1, an average of the various aspect ratios used in film. [3] While 16:9 is well-suited for modern HDTV broadcasts , older 4:3 video has to be either padded with bars on the left and right side (pillarboxed), cropped or stretched, while movies shot with wider aspect ratios ...