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  2. Gray card - Wikipedia

    en.wikipedia.org/wiki/Gray_card

    A primary use of gray cards is to provide a standard reference object for exposure determination in photography. A gray card is an (approximate) realization of a Lambertian scatterer; its apparent brightness (and exposure determination) therefore depends only on its orientation relative to the light source.

  3. Credit card - Wikipedia

    en.wikipedia.org/wiki/Credit_card

    Second, an additional 3 or 4 digit card security code (CSC) or card verification value (CVV) is now present on the back of most cards, for use in card not present transactions. Stakeholders at all levels in electronic payment have recognized the need to develop consistent global standards for security that account for and integrate both current ...

  4. 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 ...

  5. Lauren Boebert - Wikipedia

    en.wikipedia.org/wiki/Lauren_Boebert

    Lauren Opal Boebert (/ ˈ b oʊ b ər t / BOH-bərt; née Roberts; born December 19, 1986) is an American politician, businesswoman, and gun rights activist [3] serving as the U.S. representative for Colorado's 3rd congressional district since 2021.

  6. EMV - Wikipedia

    en.wikipedia.org/wiki/EMV

    An EMV credit card. EMV is a payment method based on a technical standard for smart payment cards and for payment terminals and automated teller machines which can accept them. . EMV stands for "Europay, Mastercard, and Visa", the three companies that created the standa

  7. Deforestation of the Amazon rainforest - Wikipedia

    en.wikipedia.org/wiki/Deforestation_of_the...

    The deforestation of the Amazon rainforest accelerated during the COVID-19 pandemic in Brazil. [38] [39] According to Brazil's National Institute for Space Research (INPE), deforestation in the Brazilian Amazon increased by more than 50% in the first three months of 2020 compared to the same period in 2019. [40]

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