Search results
Results from the WOW.Com Content Network
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.
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 ...
Variations in traffic light operation. Swedish traffic light (left) for use by public transport vehicles only. All signals use white lighting and special symbols ("S", "–" and an arrow) to distinguish them from regular signals. The small light at the top tells the driver when the vehicle's transponder signal is received by the traffic light.
Ionized-air glow. Nitrogen glow. Oxygen glow. Electrical discharge in air. Particle beam from a cyclotron. Ionized-air glow is the luminescent emission of characteristic blue–purple–violet light, often of a color called electric blue, by air subjected to an energy flux either directly or indirectly from solar radiation. [ 1]
Color theory, or more specifically traditional color theory, is the historical body of knowledge describing the behavior of colors, namely in color mixing, color contrast effects, color harmony, color schemes and color symbolism. [ 1] Modern color theory is generally referred to as Color science. While there is no clear distinction in scope ...
Color of chemicals. The color of chemicals is a physical property of chemicals that in most cases comes from the excitation of electrons due to an absorption of energy performed by the chemical. The study of chemical structure by means of energy absorption and release is generally referred to as spectroscopy .
Both Idaho and Montana accept the use of orange paint instead of purple and Maryland uses blue paint. It's a good idea to check with your state for the specifics before marking your own fence posts.
In optics, violet is a spectral color: It refers to the color of any different single wavelength of light on the short wavelength end of the visible spectrum (between approximately 380 and 435 nanometers), [16] [17] whereas purple is the color of various combinations of red, blue and violet light, [5] [6] some of which some humans perceive as ...