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Similarly, color is due to the energy absorbed by the compound, when an electron transitions from the HOMO to the LUMO. Lycopene is a classic example of a compound with extensive conjugation (11 conjugated double bonds), giving rise to an intense red color (lycopene is responsible for the color of tomatoes).
The Chinese word for 'color' is yánsè (顏色). In Literary Chinese, the character 色 more literally corresponds to 'color in the face' or 'emotion'. It was generally used alone and often implied sexual desire or desirability. During the Tang dynasty (618–907), the word yánsè came to mean 'all color'.
When this color name, taken from the usual color of the uniforms of sailors, originally came into use in the early 19th century, it was initially called marine blue, but the name of the color soon changed to navy blue. [2] An early use of navy blue as a color name in English was in 1840 [3] though the Oxford English Dictionary has a citation ...
Fabrics dyed in the current era from different species of sea snail. The colours in this photograph may not represent them precisely. Tyrian purple (Ancient Greek: πορφύρα porphúra; Latin: purpura), also known as royal purple, imperial purple, or imperial dye, is a reddish-purple natural dye.
The surface color of the planet Mars appears reddish from a distance because of rusty atmospheric dust. [1] From close up, it looks more of a butterscotch , [ 1 ] and other common surface colors include golden, brown, tan, and greenish, depending on minerals.
The Fischer–Saller scale, named after Eugen Fischer and Karl Saller is used in physical anthropology and medicine to determine the shades of hair color. The scale uses the following designations: A (very light blond), B to E (light blond), F to L (), M to O (dark blond), P to T (light brown to brown), U to Y (dark brown to black) and Roman numerals I to IV and V to VI (red-blond).
The Purple Heart award is a 1 + 3 ⁄ 8 inches (35 mm) wide purple- and gold-colored heart-shaped brass-alloy medal containing a profile of General George Washington. Above the heart appears a shield of the coat of arms of George Washington (a white shield with two red bars and three red stars in chief) between sprays of green leaves.
Obsidian talus at Obsidian Dome, California Polished snowflake obsidian, formed through the inclusion of cristobalite crystals. The Natural History by the Roman writer Pliny the Elder includes a few sentences about a volcanic glass called obsidian (lapis obsidianus), discovered in Ethiopia by Obsidius, a Roman explorer.