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  2. Help:Wikitext - Wikipedia

    en.wikipedia.org/wiki/Help:Wikitext

    An example of hidden comments This won't be visible except in "edit" mode. --> Another way to include a comment in the wiki markup uses the {} template, which can be abbreviated as {}. This template "expands" to the empty string, generating no HTML output; it is visible only to people editing the wiki source.

  3. Maximum power transfer theorem - Wikipedia

    en.wikipedia.org/wiki/Maximum_power_transfer_theorem

    The red curve shows the power in the load, normalized relative to its maximum possible. The dark blue curve shows the efficiency η. The efficiency η is the ratio of the power dissipated by the load resistance R L to the total power dissipated by the circuit (which includes the voltage source's resistance of R S as well as R L):

  4. Energy conversion efficiency - Wikipedia

    en.wikipedia.org/wiki/Energy_conversion_efficiency

    Electrical efficiency, useful power output per electrical power consumed; Mechanical efficiency, where one form of mechanical energy (e.g. potential energy of water) is converted to mechanical energy ; Thermal efficiency or Fuel efficiency, useful heat and/or work output per input energy such as the fuel consumed;

  5. Electrical efficiency - Wikipedia

    en.wikipedia.org/wiki/Electrical_efficiency

    If energy output and input are expressed in the same units, efficiency is a dimensionless number. [1] Where it is not customary or convenient to represent input and output energy in the same units, efficiency-like quantities have units associated with them. For example, the heat rate of a fossil fuel power plant may be expressed in BTU per ...

  6. Amplifier figures of merit - Wikipedia

    en.wikipedia.org/wiki/Amplifier_figures_of_merit

    Efficiency is a measure of how much of the power source is usefully applied to the amplifier's output. Class A amplifiers are very inefficient, in the range of 10–20% with a max efficiency of 25% for direct coupling of the output. Inductive coupling of the output can raise their efficiency to a maximum of 50%.

  7. AOL Mail Help - AOL Help

    help.aol.com/products/new-aol-mail

    You've Got Mail!® Millions of people around the world use AOL Mail, and there are times you'll have questions about using it or want to learn more about its features. That's why AOL Mail Help is here with articles, FAQs, tutorials, our AOL virtual chat assistant and live agent support options to get your questions answered.

  8. Light-emitting diode physics - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode_physics

    The mechanism causing efficiency droop was identified in 2007 as Auger recombination. [14] [15] In addition to being less efficient, operating LEDs at higher electric currents creates more heat, which can compromise LED lifetime. High-brightness LEDs often operate at 350 mA, which is a compromise between light output, efficiency, and longevity ...

  9. Today's Wordle Hint, Answer for #1249 on Tuesday, November 19 ...

    www.aol.com/todays-wordle-hint-answer-1249...

    If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1249 ahead. Let's start with a few hints.