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Crimson is a rich, deep red color, inclining to purple. [2] It originally meant the color of the kermes dye produced from a scale insect, Kermes vermilio, but the name is now sometimes also used as a generic term for slightly bluish-red colors that are between red and rose.
The periodic table is a tabular arrangement of the chemical elements, organized by their atomic number, electron configuration, and chemical properties. It is a useful tool for understanding the patterns and trends of the elements and their interactions. Learn more about the history, structure, and significance of the periodic table on Wikipedia.
Prehistoric people made stone circles and timber circles, and circular elements are common in petroglyphs and cave paintings. [2] Disc-shaped prehistoric artifacts include the Nebra sky disc and jade discs called Bi. The Egyptian Rhind papyrus, dated to 1700 BCE, gives a method to find the area of a circle.
A catoptric cistula is a box with insides made of mirrors so as to distort images of objects put into the box. Checker shadow illusion: The checker shadow illusion shows that when a shadow is cast onto a checked board, the colours of squares A and B in the photos appear to be different, when in fact they are the same. Chubb illusion
Georges Seurat, Study for "A Sunday Afternoon on La Grande Jatte", 1884, oil on canvas, 70.5 x 104.1 cm, Metropolitan Museum of Art, New York Georges Seurat painted A Sunday Afternoon between May 1884 and March 1885, and from October 1885 to May 1886, focusing meticulously on the landscape of the park [2] and concentrating on issues of colour, light, and form.
The range of colours of natural iridescent objects can be narrow, for example shifting between two or three colours as the viewing angle changes, [5] [6] An iridescent biofilm on the surface of a fish tank diffracts the reflected light, displaying the entire spectrum of colours. Red is seen from longer angles of incidence than blue.
A color term (or color name) is a word or phrase that refers to a specific color. The color term may refer to human perception of that color (which is affected by visual context) which is usually defined according to the Munsell color system, or to an underlying physical property (such as a specific wavelength of visible light).
The series takes place inside a world in which everything is made of paper cutouts, clay, and other craft materials. It is presented by a live-action human host who lives in a yellow house inhabited by anthropomorphic everyday objects. Steve Burns hosted the series from its debut in 1996 until 2002, when the part was taken over by Donovan Patton.