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Viola sororia ( / vaɪˈoʊlə səˈrɔːriə / vy-OH-lə sə-ROR-ee-ə ), [ 5] known commonly as the common blue violet, is a short-stemmed herbaceous perennial plant native to eastern North America. It is known by a number of common names, including common meadow violet, purple violet, woolly blue violet, hooded violet, and wood violet.
Atmospheric optics. A colorful sky is often due to indirect sunlight being scattered off air molecules and particulates, like smog, soot, and cloud droplets, as shown in this photo of a sunset during the October 2007 California wildfires. Atmospheric optics is "the study of the optical characteristics of the atmosphere or products of ...
Both arcs have their red side pointing towards the Sun and their violet part away from it, meaning the circumzenithal arc is red on the bottom, while the circumhorizontal arc is red on top. [60] [61] The circumhorizontal arc is sometimes referred to by the misnomer "fire rainbow". In order to view it, the Sun or Moon must be at least 58° above ...
The native Korean word 푸르다 (pureu-da) may mean either blue or green, or bluish green. These adjectives 푸르다 are used for blue as in 푸른 하늘 (pureu-n haneul ' blue sky '), or for green as in 푸른 숲 (pureu-n sup ' green forest '). 푸른 (pureu-n) is a noun-modifying form.
The purple violet is a low-growing perennial herbaceous plant up to 20 cm (8 in) tall. The leaves form a basal cluster; they are simple, up to 10 cm (4 in) broad, with an entire margin and a long petiole. The flowers are violet, dark blue and occasionally white. with five petals. The fruit is a capsule 10–15 mm ( – in) long, which splits ...
The visible spectrum is the band of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light (or simply light). The optical spectrum is sometimes considered to be the same as the visible spectrum, but some authors define the term more broadly, to include the ...
On the RGB/CMY color wheel, violet is located between blue and magenta. Violet is closely associated with purple. In optics, violet is a spectral color (referring to the color of different single wavelengths of light), whereas purple is the color of various combinations of red and blue (or violet) light, [5] [6] some of which humans perceive as ...
The aster is a perennial flowering plant in the family Asteraceae. These star-shaped flowers are great pollinators, they require little maintenance which make them ideal to plant before having a ...