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  2. Printer tracking dots - Wikipedia

    en.wikipedia.org/wiki/Printer_tracking_dots

    Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and copiers produce on every printed page that identifies the specific device that was used to print the document.

  3. Chlorophyll - Wikipedia

    en.wikipedia.org/wiki/Chlorophyll

    Its name is derived from the Greek words χλωρός (khloros, "pale green") and φύλλον (phyllon, "leaf"). [3] Chlorophyll allows plants to absorb energy from light. Chlorophylls absorb light most strongly in the blue portion of the electromagnetic spectrum as well as the red portion. [4] Conversely, it is a poor absorber of green and ...

  4. Carotenoid - Wikipedia

    en.wikipedia.org/wiki/Carotenoid

    Carotenoid. Chemical structure of β- carotene, a common natural pigment. Carotenoids (/ kəˈrɒtɪnɔɪd /) are yellow, orange, and red organic pigments that are produced by plants and algae, as well as several bacteria, archaea, and fungi. [1] Carotenoids give the characteristic color to pumpkins, carrots, parsnips, corn, tomatoes, canaries ...

  5. ESC/P - Wikipedia

    en.wikipedia.org/wiki/ESC/P

    ESC/P, short for Epson Standard Code for Printers and sometimes styled Escape/P, is a printer control language developed by Epson to control computer printers. It was mainly used in dot matrix printers and some inkjet printers, and is still widely used in many receipt thermal printers. During the era of dot matrix printers, it was also used by ...

  6. Chlorophytum comosum - Wikipedia

    en.wikipedia.org/wiki/Chlorophytum_comosum

    Chlorophytum comosum, usually called spider plant or common spider plant due to its spider-like look, also known as spider ivy, airplane plant, [2] ribbon plant (a name it shares with Dracaena sanderiana), [3] and hen and chickens, [4] is a species of evergreen perennial flowering plant of the family Asparagaceae.

  7. Purkinje effect - Wikipedia

    en.wikipedia.org/wiki/Purkinje_effect

    An animated sequence of simulated appearances of a red flower (of a zonal geranium) and background foliage under photopic, mesopic, and scotopic conditions. The Purkinje effect or Purkinje phenomenon (Czech: [ˈpurkɪɲɛ] ⓘ; sometimes called the Purkinje shift, often pronounced / p ər ˈ k ɪ n dʒ i /) [1] is the tendency for the peak luminance sensitivity of the eye to shift toward the ...

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Whiteprint - Wikipedia

    en.wikipedia.org/wiki/Whiteprint

    Whiteprint plan copy. Whiteprint describes a document reproduction produced by using the diazo chemical process. [1] It is also known as the blue-line process since the result is blue lines on a white background. It is a contact printing process that accurately reproduces the original in size, but cannot reproduce continuous tones or colors.