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  2. Viewing angle - Wikipedia

    en.wikipedia.org/wiki/Viewing_angle

    With LCD screens, some manufacturers have opted to measure the contrast ratio and report the viewing angle as the angle where the contrast ratio exceeds 5:1 or 10:1, giving minimally acceptable viewing conditions. The viewing angle is measured from one direction to the opposite, giving a maximum of 180° for a flat, one-sided screen.

  3. Slide rule - Wikipedia

    en.wikipedia.org/wiki/Slide_rule

    The S scale has a second set of angles (sometimes in a different color), which run in the opposite direction, and are used for cosines. Tangents are found by comparing the T scale with the C (or D) scale for angles less than 45 degrees. For angles greater than 45 degrees the CI scale is used.

  4. Color television - Wikipedia

    en.wikipedia.org/wiki/Color_television

    An RCA Victor Color TV ad featuring milliner Lilly Daché in 1959. Color television (American English) or colour television (Commonwealth English) is a television transmission technology that includes color information for the picture, so the video image can be displayed in color on the television set.

  5. Data and information visualization - Wikipedia

    en.wikipedia.org/wiki/Data_and_information...

    Gantt chart: Gantt chart: color; time (flow) Type of bar chart that illustrates a project schedule; Modern Gantt charts also show the dependency relationships between activities and current schedule status. For example, used in project planning; Heat map: Heat map: color; categorical variable; Represents the magnitude of a phenomenon as color ...

  6. History of display technology - Wikipedia

    en.wikipedia.org/wiki/History_of_display_technology

    Electrically operated display devices have developed from electromechanical systems for display of text, up to all-electronic devices capable of full-motion 3D color graphic displays. Electromagnetic devices, using a solenoid coil to control a visible flag or flap, were the earliest type, and were used for text displays such as stock market ...

  7. Visible spectrum - Wikipedia

    en.wikipedia.org/wiki/Visible_spectrum

    Colors that can be produced by visible light of a narrow band of wavelengths (monochromatic light) are called pure spectral colors.The various color ranges indicated in the illustration are an approximation: The spectrum is continuous, with no clear boundaries between one color and the next.

  8. Diffraction grating - Wikipedia

    en.wikipedia.org/wiki/Diffraction_grating

    A blazed diffraction grating reflecting only the green portion of the spectrum from a room's fluorescent lighting. For a diffraction grating, the relationship between the grating spacing (i.e., the distance between adjacent grating grooves or slits), the angle of the wave (light) incidence to the grating, and the diffracted wave from the grating is known as the grating equation.

  9. Twisted pair - Wikipedia

    en.wikipedia.org/wiki/Twisted_pair

    CW1308 was a similar specification to the earlier CW1293 but with an improved color code. CW1293 used mostly solid colours on the cores making it difficult to identify the pair it was twisted with without stripping back a large amount of sheath. To solve this problem. CW1308 has narrow rings of the paired color printed over the base colour.