Fruit bodies (gasterocarps) are typically roughly spherical in shape, with a persisting single or branched rhizomorph. The columella (the central sterile portion of the sporangium) are variable in size and shape. The peridium (the wall of the sporangium) is thin and short-lasting. The gleba is initially white, but later becomes colored by the masses of spores.
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The strip is triangular- shaped, changing its resistance along its length, therefore heating up a proportionally long segment with the amount of current flowing through it. The length of the segment above the threshold temperature for the leuco dye then becomes colored. Exposure to ultraviolet radiation, solvents and high temperatures reduce the lifespan of leuco dyes. Temperatures above about typically cause irreversible damage to leuco dyes; a time-limited exposure of some types to about is allowed during manufacturing.
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F-center in an NaCl crystal An F-center, Farbe center or color center (from the original German Farbzentrum, where Farbe means color and zentrum means center) is a type of crystallographic defect in which an anionic vacancy in a crystal lattice is occupied by one or more unpaired electrons. Electrons in such a vacancy tend to absorb light in the visible spectrum such that a material that is usually transparent becomes colored. This is used to identify many compounds, especially zinc oxide (yellow).
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The initial levels are smaller and a lot easier and are mainly Japanese symbols and Greek letters. When the player solves a puzzle correctly, the black-and-white representation becomes colored and animated, and the game shows the player the title of the puzzle. When the player finishes a level, Mario will congratulate them on their progress and either bow (in the first and last levels) or give a thumbs up (in all other levels). The player must work through levels in order to get access to harder levels, with more rows and columns.
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The soda fountain is destroyed, books are burned, and people who are "colored" are harassed in the street, while Betty is harassed by non-colored teenage boys. The town fathers forbid people from visiting the library, playing loud music or using colorful paint. In protest, David and Bill paint a colorful mural depicting their world, prompting their arrest. Brought to trial in front of the entire town, David and Bill defend their actions and arouse enough anger and indignation in Big Bob that he becomes colored as well and flees.
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Thermochromic paints use liquid crystals or leuco dye technology. After absorbing a certain amount of light or heat, the crystallic or molecular structure of the pigment reversibly changes in such a way that it absorbs and emits light at a different wavelength than at lower temperatures. Thermochromic paints are seen quite often as a coating on coffee mugs, whereby once hot coffee is poured into the mugs, the thermochromic paint absorbs the heat and becomes colored or transparent, therefore changing the appearance of the mug. These are known as magic mugs or heat changing mugs.
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Slowly, parts of Pleasantville change from black-and-white to color, including flowers and the faces of people who experience new bursts of emotion and foreign concepts such as books, fire and rain begin to appear. After Jennifer introduces sex to her peers, many of her classmates go to Lover's Lane to engage in sex, becoming "colored" in the process. David introduces Bill Johnson, owner of the soda fountain where Bud works, to colorful modern art via a book from the library, sparking Bill’s interest in painting. After learning of sex and masturbation from Jennifer, Betty pleasures herself while bathing and, upon reaching orgasm, sees color and eventually becomes "colored" herself.
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