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  2. Historical definitions of the SI base units - Wikipedia

    en.wikipedia.org/wiki/Historical_definitions_of...

    The mass of one litre of water at the temperature of melting ice. A litre is one thousandth of a cubic metre. M second: s time "The second is the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom." 13th CGPM (1967/68, Resolution 1; CR, 103)

  3. Year 2000 problem - Wikipedia

    en.wikipedia.org/wiki/Year_2000_problem

    He later said, "People were calling it CDC (Century Date Change), FADL (Faulty Date Logic). There were other contenders. Y2K just came off my fingertips." [12] The problem started because on both mainframe computers and later personal computers, memory was expensive, from as low as $10 per kilobyte, to more than US$100 per kilobyte in 1975.

  4. List of common display resolutions - Wikipedia

    en.wikipedia.org/wiki/List_of_common_display...

    16:9. 8,294,400. 7680 × 4320. 8K UHDTV. 4320p. 33,177,600. Many of these resolutions are also used for video files that are not broadcast. These may also use other aspect ratios by cropping otherwise black bars at the top and bottom which result from cinema aspect ratios greater than 16∶9, such as 1.85 or 2.35 through 2.40 (dubbed ...

  5. 2019 redefinition of the SI base units - Wikipedia

    en.wikipedia.org/wiki/2019_redefinition_of_the...

    2019 definition: The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10−34 when expressed in the unit J ⋅s, which is equal to kg⋅m 2 ⋅s −1, where the metre and the second are defined in terms of c and ΔνCs.

  6. DisplayPort - Wikipedia

    en.wikipedia.org/wiki/DisplayPort

    DisplayPort connector. A DisplayPort port (top right) near an Ethernet port and a USB port. DisplayPort ( DP) is a proprietary [ a] digital display interface developed by a consortium of PC and chip manufacturers and standardized by the Video Electronics Standards Association (VESA). It is primarily used to connect a video source to a display ...

  7. Orders of magnitude (time) - Wikipedia

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

    An order of magnitude of time is usually a decimal prefix or decimal order-of-magnitude quantity together with a base unit of time, like a microsecond or a million years. In some cases, the order of magnitude may be implied (usually 1), like a "second" or "year". In other cases, the quantity name implies the base unit, like "century".

  8. Powell opens key week of Fedspeak as rate cut case develops - AOL

    www.aol.com/news/powell-opens-key-week-fedspeak...

    July 15, 2024 at 1:13 AM. By Howard Schneider. WASHINGTON (Reuters) - Federal Reserve Chair Jerome Powell on Monday kicks off what is shaping up as a key week of commentary from U.S. central bank ...

  9. Specific heat capacity - Wikipedia

    en.wikipedia.org/wiki/Specific_heat_capacity

    Dimension. L 2 ⋅T −2 ⋅K −1. In thermodynamics, the specific heat capacity (symbol c) of a substance is the amount of heat that must be added to one unit of mass of the substance in order to cause an increase of one unit in temperature. It is also referred to as massic heat capacity or as the specific heat. More formally it is the heat ...

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