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  2. Cyanobacterial morphology - Wikipedia

    en.wikipedia.org/wiki/Cyanobacterial_morphology

    Optimal light conditions may be defined by quantity , duration (day–night cycle) and wavelength (color of light). The photosynthetically usable light range of the solar spectrum is generally referred to as PAR ( photosynthetically active radiation ), but some cyanobacteria may expand on PAR by not only absorbing in the visible spectrum, but ...

  3. EBU colour bars - Wikipedia

    en.wikipedia.org/wiki/EBU_colour_bars

    EBU 100/0/100/0 Colour Bars Displayed colours are only approximate due to different transfer and colour spaces used on web pages and video (BT.601 or BT.709). An alternate form of colour bars is the 100% Colour Bars or EBU 100/0/100/0 Colour Bars pattern (specified in ITU-R Rec. BT.1729 [8]), also known as the RGB pattern or full field bars, which consists of eight vertical bars of 100% ...

  4. Trigonometric Rosen–Morse potential - Wikipedia

    en.wikipedia.org/wiki/Trigonometric_Rosen–Morse...

    a parallelism that explains the potential's name. The most prominent application concerns the (+,,) parametrization, with non-negative integer, and is due to Schrödinger [3] who intended to formulate the hydrogen atom problem on Albert Einstein's closed universe, , the direct product of a time line with a three-dimensional closed space of positive constant curvature, the hypersphere, and ...

  5. SMPTE color bars - Wikipedia

    en.wikipedia.org/wiki/SMPTE_color_bars

    An extended version of SMPTE Color Bars signal, developed by the Japanese Association of Radio Industries and Businesses as ARIB STD-B28 and standardized as SMPTE RP 219:2002 [15] (High-Definition, Standard-Definition Compatible Color Bar Signal) was introduced to test HDTV signal with an aspect ratio of 16:9 that can be down converted to a ...

  6. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Red is the most used color on Japanese emergency vehicles. Japanese police use light bars mounted on a raised (mechanical) platform to make them more visible over congested streets. Rotating lights are most commonly used. But some newer vehicles have LED light bars installed. Vehicles with any other light color than red are security or engineers.

  7. Sheet metal - Wikipedia

    en.wikipedia.org/wiki/Sheet_metal

    The larger the gauge number, the thinner the metal. Commonly used steel sheet metal ranges from 30 gauge to about 7 gauge. Gauge differs between ferrous metals and nonferrous metals such as aluminum or copper. Copper thickness, for example, is measured in ounces, representing the weight of copper contained in an area of one square foot.

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