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  2. Thrust-to-weight ratio - Wikipedia

    en.wikipedia.org/wiki/Thrust-to-weight_ratio

    The thrust-to-weight ratio is usually calculated from initial gross weight at sea level on earth [6] and is sometimes called thrust-to-Earth-weight ratio. [7] The thrust-to-Earth-weight ratio of a rocket or rocket-propelled vehicle is an indicator of its acceleration expressed in multiples of earth's gravitational acceleration, g 0. [5]

  3. Antenna (radio) - Wikipedia

    en.wikipedia.org/wiki/Antenna_(radio)

    The loss resistance will generally affect the feedpoint impedance, adding to its resistive component. That resistance will consist of the sum of the radiation resistance R rad and the loss resistance R loss. If a current I is delivered to the terminals of an antenna, then a power of I 2 R rad will be radiated and a power of I 2 R loss will

  4. Power dividers and directional couplers - Wikipedia

    en.wikipedia.org/wiki/Power_dividers_and...

    The insertion loss is not such a problem for an unequal split of power: for instance -40 dB at port 3 has an insertion loss less than 0.2 dB at port 2. Isolation can be improved at the expense of insertion loss at both output ports by replacing the output resistors with T pads .

  5. Load factor (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Load_factor_(aeronautics)

    In aeronautics, the load factor is the ratio of the lift of an aircraft to its weight [1] [2]: § 5.22 and represents a global measure of the stress ("load") to which the structure of the aircraft is subjected: =, where is the load factor, is the lift is the weight.

  6. S band - Wikipedia

    en.wikipedia.org/wiki/S_band

    The largest use of this band is by Wi-Fi networks; the IEEE 802.11b and 802.11g standards use the 2.4 GHz section of the S band. These are the most widely used computer networks in the world, used globally in home and small office networks to link desktop and laptop computers, tablet computers, smartphones, smart TVs, printers, and smart speakers together and to a wireless router to connect ...

  7. Grain (unit) - Wikipedia

    en.wikipedia.org/wiki/Grain_(unit)

    The grain was the legal foundation of traditional English weight systems, [5] and is the only unit that is equal throughout the troy, avoirdupois, and apothecaries' systems of mass. [6]: C-6 The unit was based on the weight of a single grain of barley which was equal to about + 4 ⁄ 3 the weight of a single grain of wheat.