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Praseodymium is a chemical element; it has symbol Pr and the atomic number 59. It is the third member of the lanthanide series and is considered one of the rare-earth metals. It is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. It is too reactive to be found in native form ...
YCbCr. A color image and its Y′, C B and C R components. The Y′ image is essentially a greyscale copy of the main image. YCbCr, Y′CbCr, or Y Pb/Cb Pr/Cr, also written as YCBCR or Y′CBCR, is a family of color spaces used as a part of the color image pipeline in video and digital photography systems. Y′ is the luma component and C B and ...
Dark blue flag. Dark blue Monoestrellada (1952) with navy blue. Dark blue, or navy blue, flag of Puerto Rico (1952), matching the colors of the dark blue original Lares flag, one of two original versions of the flag available today, uses the following color shades: Colors scheme. Blue.
Use: Civil and state flag, civil and state ensign: Proportion: 2:3: Adopted: December 22, 1895; 128 years ago () by pro-independence members of the Revolutionary Committee of Puerto Rico exiled in New York City; members identified colors as red, white, and blue but did not specify color shades; some historians have presumed members adopted light blue shade based on the light blue flag of the ...
Color blindness or color vision deficiency ( CVD) is the decreased ability to see color or differences in color. [ 2] The severity of color blindness ranges from mostly unnoticeable to full absence of color perception. Color blindness is usually an inherited problem or variation in the functionality of one or more of the three classes of cone ...
Full color image along with its R, G, and B components Additive color mixing demonstrated with CD covers used as beam splitters A diagram demonstrating additive color with RGB. The RGB color model is an additive color model [1] in which the red, green and blue primary colors of light are added together in various ways to reproduce a broad array ...
Shades of white are colors that differ only slightly from pure white. Variations of white include what are commonly termed off-white colors, which may be considered part of a neutral color scheme. In color theory, a shade is a pure color mixed with black (or having a lower lightness ). Strictly speaking, a "shade of white" would be a neutral gray.
CPK coloring. A plastic ball-and-stick model of proline. These models usually comply with CPK coloring. In chemistry, the CPK coloring (for Corey – Pauling – Koltun) is a popular color convention for distinguishing atoms of different chemical elements in molecular models.