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The Purple Earth hypothesis has great implications for the search for extraterrestrial life. Historically, planets reflecting light in the green-yellow range were sought out as possible hosts to photosynthetic organisms, due to the implied presence of chlorophyll.
Eye tracking device is a tool created to help measure eye and head movements. The first devices for tracking eye movement took two main forms: those that relied on a mechanical connection between participant and recording instrument, and those in which light or some other form of electromagnetic energy was directed at the participant's eyes and its reflection measured and recorded.
Marketer Seth Godin has used the phrase "Purple Cow" for the concept of marketing a product as "intrinsically different" in his book, Purple Cow: Transform Your Business by Being Remarkable. [ 16 ] [ 17 ] The phrase has also been used for the marketing concept of choosing a name which "makes your audience stop in their tracks and wonder why the ...
Violet is the color of light at the short wavelength end of the visible spectrum. It is one of the seven colors that Isaac Newton labeled when dividing the spectrum of visible light in 1672. Violet light has a wavelength between approximately 380 and 435 nanometers. [2] The color's name is derived from the Viola genus of flowers. [3] [4]
Puce is a brownish purple color. The term comes from the French couleur puce, literally meaning "flea color". [1]Puce became popular in the late 18th century in France. It appeared in clothing at the court of Louis XVI, and was said to be a favorite color of Marie Antoinette, though there are no portraits of her wearing it.
Purple Hibiscus is a novel by Nigerian writer Chimamanda Ngozi Adichie, published on 30 October 2003 by Algonquin Books. Narrated in the first person, Kambili Achike, the central character struggles to find her voice as the daughter of a wealthy, devout Catholic businessman, Eugene who violently abuses his family.
This is because long-wavelength (red) light is scattered less than blue light. The red light reaches the observer's eye, whereas the blue light is scattered out of the line of sight. Other colours in the sky, such as glowing skies at dusk and dawn. These are from additional particulate matter in the sky that scatter different colors at ...
All the Light We Cannot See is a 2014 war novel by American author Anthony Doerr.The novel is set during World War II.It revolves around the characters Marie-Laure LeBlanc, a blind French girl who takes refuge in her great-uncle's house in Saint-Malo after Paris is invaded by Nazi Germany, and Werner Pfennig, a bright German boy who is accepted into a military school because of his skills in ...