Lofty North American ornamental and timber tree (Liriodendron tulipifera) of the magnolia family, not related to true poplars. It occurs in mixed hardwood stands in eastern North America. It is taller than all other eastern broad-leaved trees (up to 197 ft, or 60 m), and its trunk often has a diameter greater than 7 ft (2 m). Long-stemmed, bright-green leaves have two to four side lobes and blunted tips. Yellowish-green tuliplike flowers have six petals, orange at their bases, and three bright-green sepals. Other characteristics include conelike clusters of winged fruits; aromatic, purplish-brown twigs; stunning golden-yellow autumn leaves; winter buds resembling a duck's bill; and resistance to pests and diseases. The wood is used to manufacture furniture parts, plywood panels, paper, boxes, and crates.
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In newspaper publishing, the use of lurid features and sensationalized news in newspaper publishing to attract readers and increase circulation. The phrase was coined in the 1890s to describe tactics employed in the furious competition between two New York papers, Joseph Pulitzer's World and William Randolph Hearst's Journal. When Hearst hired away from Pulitzer a cartoonist who had drawn the immensely popular comic strip “The Yellow Kid,” another cartoonist was hired to draw the comic for the World; the rivalry excited so much attention that the competition was dubbed yellow journalism. Techniques of the period that became permanent features of U.S. journalism include banner headlines, coloured comics, and copious illustrations.
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Acute infectious tropical disease, sometimes occurring in temperate zones. Abrupt onset of headache, backache, fever, nausea, and vomiting is followed by either recovery with immunity or by higher fever, slow pulse, and vomiting of blood. Patients may die in a week. Jaundice is common (hence the name). One of the world's great plagues for 300 years, it is caused by a virus transmitted by several species of mosquitoes. Carlos Finlay suggested and Walter Reed proved this means of spread, leading to near elimination of the disease through mosquito control (see William Gorgas). Treatment consists of supportive care, particularly fever reduction. Control of mosquitoes near cities and live-virus vaccines—developed by Max Theiler (1899–1972), who won a 1951 Nobel Prize for his work—have made yellow fever completely preventable.
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Songbird species (Emberiza citrinella, family Emberizidae) found from Britain to central Asia. The name is derived from the German Ammer (“bunting”). Yellowhammers are 6 in. (16 cm) long and have a streaked brown body, yellow-tinged head and breast, and a rapid song. In the southern U.S., the yellow-shafted flicker is called yellowhammer because of its drumming.
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Large inlet of the western North Pacific Ocean, between northeastern China and the Korean peninsula. Renowned for its fishing grounds, it connects with the East China Sea on the south; the Shandong Peninsula extends into it from the west. Two major arms of it are the Bo Hai (northwest) and Korea Bay (north). Excluding the Bo Hai, it has an area of about 161,000 sq mi (417,000 sq km) and a maximum depth of 338 ft (103 m). It derives its name from the colour of the silt-laden water discharged into it by major Chinese rivers, including the Liao and the Huang He (Yellow River), both of which flow into the Bo Hai. Leading port cities include Qingdao and Dalian in China, Inch'ŏn in South Korea, and Namp'o in North Korea.
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Third of ancient China's mythological emperors and a patron saint of Daoism. According to legend, he was born in 2704 BC and became emperor in 2697. He is remembered as a paragon of wisdom who established a golden age, seeking to create an ideal kingdom in which his people would live in keeping with natural law. Tradition holds that his reign saw the introduction of wooden houses, carts, boats, the bow and arrow, writing, and governmental institutions. His wife was reputed to have taught women how to breed silkworms and weave silk.
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The color box at right shows the most intense yellow representable in in 8-bit RGB color model; yellow is a secondary color in an additive RGB space.
The measured light spectrum from yellow pixels on a typical computer display is complex, and very unlike the reflectance spectrum of a yellow object such as a banana.
Process yellow (also known as pigment yellow, printer's yellow or canary yellow) is one of the three colors typically used as subtractive primary colors, along with magenta and cyan. The CMYK system for color printing is based on using four inks, one of which is a yellow color. This is in itself a standard color, and a fairly narrow range of yellow inks or pigments are used. Process yellow is based on a colorant that reflects the preponderance of red and green light, and absorbs most blue light, as in the reflectance spectra shown in the figure on the lower right.
Process yellow is not an RGB color, and there is no fixed conversion from CMYK primaries to RGB. Different formulations are used for printer's ink, so there can be variations in the printed color that is pure yellow ink.
Hunt defines that "two colors are complementary when it is possible to reproduce the tristimulus values of a specified achromatic stimulus by an additive mixture of these two stimuli." That is, when two colored lights can be mixed to match a specified white (achromatic, non-colored) light, the colors of those two lights are complementary. This definition, however, does not constrain what version of white will be specified. In the nineteenth century, the scientists Grassmann and Helmholtz did experiments in which they concluded that finding a good complement for spectral yellow was difficult, but that the result was indigo, that is, a wavelength that today's color scientists would call violet. Helmholtz says "Yellow and indigo blue" are complements. Grassman reconstructs Newton's category boundaries in terms of wavelengths and says "This indigo therefore falls within the limits of color between which, according to Helmholtz, the complementary colors of yellow lie. Newton's own color circle has yellow directly opposite the boundary between indigo and violet. These results, that the complement of yellow is a wavelength shorter than 450 nm, are derivable from the modern CIE 1931 system of colorimetry if it is assumed that the yellow is about 580 nm or shorter wavelength, and the specified white is the color of a blackbody radiator of temperature 2800 K or lower (that is, the white of an ordinary incandescent light bulb). More typically, with a daylight-colored or around 5000 to 6000 K white, the complement of yellow will be in the blue wavelength range, which is the standard modern answer for the complement of yellow.