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Detail from Seurat's Parade de cirque, 1889, showing the contrasting dots of paint which define Pointillism. Pointillism (/ ˈ p w æ̃ t ɪ l ɪ z əm /, also US: / ˈ p w ɑː n-ˌ ˈ p ɔɪ n-/) [1] is a technique of painting in which small, distinct dots of color are applied in patterns to form an image.
Visual snow: dynamic, continuous, tiny dots observed across the entire visual field at any time of the day, regardless of lighting conditions, persisting for more than three months. The dots are usually black/gray on a white background and gray/white on a black background; however, they can also be transparent, white flashing, or colored.
The white dots are small and located in the posterior pole at the level of the retinal pigment epithelium. The white dots may disappear after the first few weeks of the disease. The cause is generally unknown, but a viral illness has been reported prior to multiple evanescent white dot syndrom in one-third of cases. [ 2 ]
When displayed on a black-and-white monitor, the luminance signal produces a normal black-and-white image, while the chrominance signal manifests as a fine pattern of dots of varying size and intensity overlaid over the black-and-white picture. A related phenomenon is dot crawl, which can produce visual artifacts in colour pictures.
Image:Newworldmap-alt.png – Version of Image:BlankMap-World-alt.png, but with bodies of water coloured blue and white land masses. 1488 x 755. Image:BlankMap-World-v2.png – Version of Image:BlankMap-World.png, but with sovereign microstates (i.e., under 2 500 km² in area) represented as circles to facilitate identification and colourising ...
The plants have two linear leaves and a single small white drooping bell-shaped flower with six petal-like tepals in two circles . The smaller inner petals have green markings. Snowdrops have been known since the earliest times under various names, but were named Galanthus in 1753.
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Nymphaea alba has a white flower that usually blooms during the daytime in most summer. The flower blooms on top of a big rounded green leaf up to 30 cm: both leaves float on the water's surface. At first, the flower bloom is cup-shaped, with a size of around 8 cm, then it rises to 20 cm and becomes star-shaped over time.