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  2. Voltage divider - Wikipedia

    en.wikipedia.org/wiki/Voltage_divider

    For example, some logic circuits operate at 5 V whereas others operate at 3.3 V. Directly interfacing a 5 V logic output to a 3.3 V input may cause permanent damage to the 3.3 V circuit. In this case, a voltage divider with an output ratio of 3.3/5 might be used to reduce the 5 V signal to 3.3 V, to allow the circuits to interoperate without ...

  3. If and only if - Wikipedia

    en.wikipedia.org/wiki/If_and_only_if

    This is an example of mathematical jargon (although, as noted above, if is more often used than iff in statements of definition). The elements of X are all and only the elements of Y means: "For any z in the domain of discourse , z is in X if and only if z is in Y ."

  4. Vector calculus identities - Wikipedia

    en.wikipedia.org/wiki/Vector_calculus_identities

    In Cartesian coordinates, the divergence of a continuously differentiable vector field = + + is the scalar-valued function: ⁡ = = (, , ) (, , ) = + +.. As the name implies, the divergence is a (local) measure of the degree to which vectors in the field diverge.

  5. Snowfall tracker: See how much snow fell near you - AOL

    www.aol.com/news/snowfall-tracker-see-much-snow...

    USA TODAY map details how much snow has accumulated over the past 24, 48, and 72 hours as well as seasonal totals across the US.

  6. Ask the experts: I just got married. What investing decisions ...

    www.aol.com/finance/ask-experts-just-got-married...

    For example, if you each max out your 401(k) contributions at $23,500 annually (the 2025 limit), that’s $47,000 invested for your future as a couple — double the impact. Retirement accounts ...

  7. Help:Conditional expressions - Wikipedia

    en.wikipedia.org/wiki/Help:Conditional_expressions

    See also: the {{}} template. The #if function selects one of two alternatives based on the truth value of a test string. {{#if: test string | value if true | value if false}} As explained above, a string is considered true if it contains at least one non-whitespace character.

  8. On Today's Date: A World Record 24-Hour Temperature ... - AOL

    www.aol.com/news/todays-date-world-record-24...

    The previous morning, the same observer recorded a low of 54 degrees below zero.That 103-degree temperature change is not only America's highest 24-hour temperature change, but it's also a world ...

  9. Divergence - Wikipedia

    en.wikipedia.org/wiki/Divergence

    The result, div F, is a scalar function of x. Since this definition is coordinate-free, it shows that the divergence is the same in any coordinate system. However the above definition is not often used practically to calculate divergence; when the vector field is given in a coordinate system the coordinate definitions below are much simpler to use.