Impossible colors are hues that can only be perceived under specific conditions. Examples of impossible colors are bluish-yellow and reddish-green . This does not mean the muddy brown color created when mixing red and green paints, or the green color from yellow and blue, but completely unique "new" colors.
Opponent process
The color opponent process is a color theory that states that the human visual system interprets information about color by processing signals from cones and rods in an antagonistic manner. The three types of cones have some overlap in the wavelengths of light to whic...
A bur (also spelled burr) is a seed or dry fruit in which the seeds bear hooks or teeth which attach themselves to fur or clothing of passing animals or people. The hooks or teeth can be irritants and very hard to get off of clothing, such as wool or cotton. It was the inspiration for Velcro.
Plants with burs are found in many genera:
*Acaena - Piri-piri
*Agrimonia - Agrimony
*Ambrosia - Ragweed
*Arctium - Burdock
*Bidens - Bur marigold
*Circaea - Enchanter's Nightshades
*Galium aparine - Goosegrass
*Geum - Avens
*Hackelia - Stickseed
*Osmorhiza - Cicely
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo." is a grammatically valid sentence in the American English language, used as an example of how homonyms and homophones can be used to create complicated linguistic constructs. It has been discussed in literature since 1972 when the sentence was used by William J. Rapaport, an associate professor at the University at Buffalo. It was posted to Linguist List by Rapaport in 1992. It was also featured in Steven Pinker's 1994 book The Language Instinct.
Sentence construction
The sentence is unpunctuated and uses three diff...
