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  2. File:Vintage Tomoe Soroban (Abacus) Japanese Calculator, Made ...

    en.wikipedia.org/wiki/File:Vintage_Tomoe_Soroban...

    Exposure time: 1/60 sec (0.016666666666667) F-number: f/3.5: ISO speed rating: 100: Date and time of data generation: 04:00, 16 September 2014: Lens focal length: 7.7 mm: Horizontal resolution: 96 dpi: Vertical resolution: 96 dpi: Software used: 1.0900: File change date and time: 17:49, 16 September 2014: Y and C positioning: Co-sited: Exposure ...

  3. Ampere - Wikipedia

    en.wikipedia.org/wiki/Ampere

    In general, charge Q is determined by steady current I flowing for a time t as Q = I t. Constant, instantaneous and average current are expressed in amperes (as in "the charging current is 1.2 A") and the charge accumulated (or passed through a circuit) over a period of time is expressed in coulombs (as in "the battery charge is 30 000 C ").

  4. Date and time notation in Japan - Wikipedia

    en.wikipedia.org/.../Date_and_time_notation_in_Japan

    The current time is at top right in orange. Both the 12-hour and 24-hour notations are commonly used in Japan. The 24-hour notation is commonly used in Japan, especially in train schedules. [1] The 12-hour notation is also commonly used, by adding 午前 ("before noon") or 午後 ("after noon") before the time, e.g. 午前10時 for 10 am. [1]

  5. Mathematics of three-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_three-phase...

    The plotted line represents the variation of instantaneous voltage (or current) with respect to time. This cycle repeats with a frequency that depends on the power system. In electrical engineering, three-phase electric power systems have at least three conductors carrying alternating voltages that are offset in time by one-third of the period ...

  6. Volt-ampere - Wikipedia

    en.wikipedia.org/wiki/Volt-ampere

    The volt-ampere (SI symbol: VA, [1] sometimes V⋅A or V A) is the unit of measurement for apparent power in an electrical circuit.It is the product of the root mean square voltage (in volts) and the root mean square current (in amperes). [2]

  7. Electric current - Wikipedia

    en.wikipedia.org/wiki/Electric_current

    In other media, any stream of charged objects (ions, for example) may constitute an electric current. To provide a definition of current independent of the type of charge carriers, conventional current is defined as moving in the same direction as the positive charge flow. So, in metals where the charge carriers (electrons) are negative ...

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Ampere-hour - Wikipedia

    en.wikipedia.org/wiki/Ampere-hour

    An ampere-hour or amp-hour (symbol: A⋅h or A h; often simplified as Ah) is a unit of electric charge, having dimensions of electric current multiplied by time, equal to the charge transferred by a steady current of one ampere flowing for one hour, or 3,600 coulombs. [1] [2]