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  2. Where to shop for today's best sales: Get $300 for a 65" TV ...

    www.aol.com/lifestyle/where-to-shop-for-todays...

    Casper: Take 30% off all mattresses during the brand's post-Labor Day sale. Coach Outlet : Get up to 70% off select styles. Dick's Sporting Goods : Get up to 50% off shoes, clothing, gear and more.

  3. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_Code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

  4. Gray card - Wikipedia

    en.wikipedia.org/wiki/Gray_card

    A gray card is a flat object of a neutral-gray color that derives from a flat reflectance spectrum. A typical example is the Kodak R-27 set, which contains one 8 in × 10 in (20 cm × 25 cm) card and one 4 in × 5 in (10 cm × 13 cm) card, each with an 18% reflectance across the visible spectrum, and a white reverse side with a 90% reflectance.

  5. Sales taxes in the United States - Wikipedia

    en.wikipedia.org/wiki/Sales_taxes_in_the_United...

    The Wake County Board of Commissioners levied a Prepared Food and Beverage Tax of 1% of the sale price of prepared food and beverages effective January 1, 1993, bringing the total to 8.25%. [ 166 ] There is a 40.5¢ tax per gallon on gas , [ 167 ] a 45¢ tax per pack of cigarettes, a 79¢ tax per gallon on wine, and a 53¢ tax per gallon on beer.

  6. Raised-cosine filter - Wikipedia

    en.wikipedia.org/wiki/Raised-cosine_filter

    Mathematical description. The raised-cosine filter is an implementation of a low-pass Nyquist filter, i.e., one that has the property of vestigial symmetry. This means that its spectrum exhibits odd symmetry about , where is the symbol-period of the communications system. Its frequency-domain description is a piecewise -defined function, given ...

  7. Solar cycle 25 - Wikipedia

    en.wikipedia.org/wiki/Solar_cycle_25

    Solar cycle 25 is the current solar cycle, the 25th since 1755, when extensive recording of solar sunspot activity began. It began in December 2019 with a minimum smoothed sunspot number of 1.8. [ 2 ]

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