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  2. Electrical length - Wikipedia

    en.wikipedia.org/wiki/Electrical_length

    [4]: p.12–14 If the electrical length is much less than one, that is the physical length of a conductor is much shorter than the wavelength, say less than one tenth of the wavelength (< /) it is called electrically short. In this case the voltage and current are approximately constant along the conductor, so it acts as a simple connector ...

  3. The New York Times crossword - Wikipedia

    en.wikipedia.org/wiki/The_New_York_Times_crossword

    A full specification sheet listing the paper's requirements for crossword puzzle submission can be found online or by writing to the paper. The Monday–Thursday, and usually Sunday, puzzles have a theme. This is often some sort of connection between at least three long across answers, such as similar types of puns, added letters, or hidden ...

  4. Crossword - Wikipedia

    en.wikipedia.org/wiki/Crossword

    An American-style 15×15 crossword grid layout. A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one ...

  5. Crossword abbreviations - Wikipedia

    en.wikipedia.org/wiki/Crossword_abbreviations

    The abbreviation is not always a short form of the word used in the clue. For example: "Knight" for N (the symbol used in chess notation) Taking this one stage further, the clue word can hint at the word or words to be abbreviated rather than giving the word itself. For example: "About" for C or CA (for "circa"), or RE.

  6. Electric current - Wikipedia

    en.wikipedia.org/wiki/Electric_current

    Joule immersed a length of wire in a fixed mass of water and measured the temperature rise due to a known current through the wire for a 30 minute period. By varying the current and the length of the wire he deduced that the heat produced was proportional to the square of the current multiplied by the electrical resistance of the wire.

  7. Speed of electricity - Wikipedia

    en.wikipedia.org/wiki/Speed_of_electricity

    In other words, the greater the distance from the conductor, the more the electric field lags. [4] Since the velocity of propagation is very high – about 300,000 kilometers per second – the wave of an alternating or oscillating current, even of high frequency, is of considerable length.

  8. IEC 60228 - Wikipedia

    en.wikipedia.org/wiki/IEC_60228

    Comparison of SWG (red), AWG (blue) and IEC 60228 (black) wire gauge sizes from 0.03 to 200 mm² to scale on a 1 mm grid – in the SVG file, hover over a size to highlight it. In engineering applications, it is often most convenient to describe a wire in terms of its cross-section area, rather than its diameter, because the cross section is directly proportional to its strength and weight ...

  9. Drift velocity - Wikipedia

    en.wikipedia.org/wiki/Drift_velocity

    The formula for evaluating the drift velocity of charge carriers in a material of constant cross-sectional area is given by: [1] =, where u is the drift velocity of electrons, j is the current density flowing through the material, n is the charge-carrier number density, and q is the charge on the charge-carrier.