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Congenital red–green color blindness is an inherited condition that is the root cause of the majority of cases of color blindness. It has no significant symptoms aside from its minor to moderate effect on color vision. [1] It is caused by variation in the functionality of the red and/or green opsin proteins, which are the photosensitive pigment in the cone cells of the retina, which mediate ...
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Lamium purpureum grows with square stems to 5–20 cm [3] (rarely 30 cm) in height. The leaves have fine hairs, are green at the bottom and shade to purplish at the top; they are 2–4 cm long and broad, with a 1–2 cm petiole (leaf stalk), and wavy to serrated margins. The zygomorphic flowers are bright red-purple, with a top hood-like petal ...
Purple bacteria or purple photosynthetic bacteria are Gram-negative proteobacteria that are phototrophic, capable of producing their own food via photosynthesis. [1] They are pigmented with bacteriochlorophyll a or b, together with various carotenoids, which give them colours ranging between purple, red, brown, and orange. They may be divided into two groups – purple sulfur bacteria ...
Purple Violets is a 2007 American independent romantic comedy film written and directed by Edward Burns, who also co-stars. It is set in lower Manhattan, about four friends from college who unexpectedly meet again after twelve years apart. The film stars Selma Blair, Patrick Wilson, Debra Messing and Burns. It also features Dennis Farina, Donal Logue and Elizabeth Reaser. Purple Violets became ...
The Purple Network. The Purple Network (Spanish: La red púrpura) [1] is a Spanish neo-noir thriller [2] television miniseries created, co-directed and executively produced by Paco Cabezas [3] based on the novel of the same name by Carmen Mola. It is a follow-up to The Gypsy Bride, with Nerea Barros returning as inspector Elena Blanco.
The lumen (symbol: lm) is the unit of luminous flux, a measure of the perceived power of visible light emitted by a source, in the International System of Units (SI). Luminous flux differs from power ( radiant flux) in that radiant flux includes all electromagnetic waves emitted, while luminous flux is weighted according to a model (a "luminosity function") of the human eye's sensitivity to ...
Trithemis annulata, commonly known as the violet dropwing, violet-marked darter, purple-blushed darter, or plum-coloured dropwing, is a species of dragonfly in the family Libellulidae. It is found in most of Africa, the Middle East, the Arabian Peninsula, and southern Europe. These dragonflies are called dropwings because of their habit of immediately lowering their wings after landing on a ...
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