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  2. $2,000 Quarter? Check Your Pockets Before You Use This ... - AOL

    www.aol.com/2-000-quarter-check-pockets...

    It all depends on which type of quarter you use. If it’s a Wisconsin state quarter issued in 2004, it could be worth at least $2,000 and maybe much more. The vast majority of 2004 Wisconsin ...

  3. Smith chart - Wikipedia

    en.wikipedia.org/wiki/Smith_chart

    Using the Smith chart, the normalised impedance may be obtained with appreciable accuracy by plotting the point representing the reflection coefficient treating the Smith chart as a polar diagram and then reading its value directly using the characteristic Smith chart scaling. This technique is a graphical alternative to substituting the values ...

  4. List of electronic component packaging types - Wikipedia

    en.wikipedia.org/wiki/List_of_electronic...

    The codes given in the chart below usually tell the length and width of the components in tenths of millimeters or hundredths of inches. For example, a metric 2520 component is 2.5 mm by 2.0 mm which corresponds roughly to 0.10 inches by 0.08 inches (hence, imperial size is 1008).

  5. Decibel - Wikipedia

    en.wikipedia.org/wiki/Decibel

    For example, for the reference value of 1 volt, a common suffix is "V" (e.g., "20 dBV"). [3] [4] Two principal types of scaling of the decibel are in common use. When expressing a power ratio, it is defined as ten times the logarithm with base 10. [5] That is, a change in power by a factor of 10 corresponds to a 10 dB change in level.

  6. $2,000 Quarter? Check Your Pockets Before You Use This ... - AOL

    www.aol.com/2-000-quarter-check-pockets...

    The Spruce Crafts estimates the value of an uncirculated, ungraded “extra leaf low” specimen at ~$100; PCGS places a value of $95 on a graded MS60 example — but a much higher $5,500 for a ...

  7. A brief history of the Times Square New Year’s Eve ball drop

    www.aol.com/news/brief-history-times-square-eve...

    Nonetheless, Tama remembers her years as the timekeeper on the roof of One Times Square fondly. When the last minute of the year arrived, workers lowered the ball down using a complex pulley system.

  8. Sustainable energy - Wikipedia

    en.wikipedia.org/wiki/Sustainable_energy

    The use of low-emission energy sources to produce electricity; Electrification – that is increased use of electricity instead of directly burning fossil fuels; Accelerated adoption of energy efficiency measures [136] Some energy-intensive technologies and processes are difficult to electrify, including aviation, shipping, and steelmaking.

  9. Fiscal Quarters (Q1, Q2, Q3, Q4) Explained and What ... - AOL

    www.aol.com/finance/fiscal-quarters-q1-q2-q3...

    The first quarter of the year runs from January through March, the second quarter is from April through June, and so on. But companies operate on business-oriented “fiscal quarters” instead.