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Violet

violet

1. (Science: botany) Any plant or flower of the genus viola, of many species. The violets are generally low, herbaceous plants, and the flowers of many of the species are blue, while others are white or yellow, or of several colours, as the pansy (Viola tricolour).

The cultivated sweet violet is viola odorata of Europe. The common blue violet of the eastern united states is V. Cucullata; the sand, or bird-foot, violet is V. Pedata.

2. The colour of a violet, or that part of the spectrum farthest from red. It is the most refrangible part of the spectrum.

3. In art, a colour produced by a combination of red and blue in equal proportions; a bluish purple colour.

4. (Science: zoology) Any one of numerous species of small violet-coloured butterflies belonging to Lycaena, or Rusticus, and allied genera. Corn violet. See Corn. Dame's violet.

(Science: botany) An aquatic European herb (Hottonia palustris) with pale purplish flowers and pinnatifid leaves.

Origin: F. Violette a violet (cf. Violet violet-coloured), dim. Of OF. Viole a violet, L. Viola; akin to Gr. Cf. Iodine.

Dark blue, inclining to red; bluish purple; having a colour produced by red and blue combined.

(Science: zoology) Violet shell, any species of ianthina; called also violet snail. See Lanthina. Violet wood, a name]] given to several kinds of hard purplish or reddish woods, as king wood, myall wood, and the wood of the andira violacea, a tree of Guiana.

Origin: Cf. F. Violet. See Violet.


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Re: Biology is not a science

... a tint of yellow or yellow green. Perhaps it is a degree darker than true yellow, is it caused from black or is it in part a neutral of yellow and violet? Or is it yet another brown--another neutral from green and red? The point is that if someone says it is yellow it is an estimation and it orients ...

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by AFJ
Sun Jun 07, 2009 1:33 pm
 
Forum: General Discussion
Topic: Biology is not a science
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Why are leaves green?

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by Linn
Tue Apr 21, 2009 12:19 am
 
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Topic: Why are leaves green?
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by rosstyle
Sun Apr 12, 2009 12:17 am
 
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wavelength in photosynthesis

... photosynthesis? I know the energy is greatest at red which is over 700. So if my choices are 420 475 575 625 730 would it be 730? But then I read violet is the best....Any advice? THANKS

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by seders99
Sun Apr 05, 2009 8:08 pm
 
Forum: Ecology
Topic: wavelength in photosynthesis
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Re: Why are leaves green?

... is light, water and carbon dioxide. The higher rate of photosynthesis and absorbance by green leaves are in the red (chlorophyll a: 650 nm) and violet light (chlorophyll b : 400 nm) range. While the lowest is green which is reflected and minimal green light is also absorbed. [ more information ...

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by wrong16
Tue Mar 31, 2009 8:03 am
 
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