carotenoid
carotenoid A generic term for water-insoluble, polyisoprenoid pigments, which often function as accessory photosynthetic pigments in higher plants and photosynthetic bacteria, with absorption peaks between 450 and 480 nm. The group includes the
carotenes, which are orange, and xanthophylls, which are yellow. During the
senescence of leaves,
chlorophyll breaks down faster than carotenoids and carotenoid colours are revealed. In the vertebrate liver, carotene is changed into (i.e. is a precursor of) vitamin A.
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Vagabonds in Space
Magazine article from: Natural History; 7/1/2004; ; 700+ words
; ...1766 by a German astronomer named Johann Daniel Titius. A few years later, Titius's colleague Johann Elert Bode, giving no credit to Titius, began...it's often called the Titius-Bode law or even, erasing Titius's...
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Numerical patterns in nature.
Magazine article from: World and I; 5/1/1998; ; 700+ words
; ...patterns in nature. The Titius-Bode sequence Since the dawn of civilization...relatively obscure Polish astronomer, Johann Titius, made the remarkable discovery...somewhat better known German astronomer Johann Elert Bode, and it came to be called Bode...
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Galactic center affects solar system.
Magazine article from: Science News; 6/20/1987; 517 words
; ...they are. One of the famous empirical facts about this configuration is the Titius-Bode law, observed by Johann Titius in 1766 and published by Johann Elert Bode in 1772. It says that the radii of the orbits of the planets from the asteroid belt...
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BOOK REVIEW
Newspaper article from: The Independent - London; 5/24/1994; ; 700+ words
; ...a more exact correspondence than is given by Bode's law to the distances between the planets...Following the arrow signifying a cross-reference to Bode's law, we discover that Johann Elert Bode devised Bode's law, but any formulation of...
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Guari Collections: Celestial Bodies
Newspaper article from: The Beacon Hill Times; 6/5/2007; ; 700+ words
; ...18th century atlases published by Johann Elert Bode in 1801. Not only are the 20 sheets...and instruments, whatever fired up Bode's feverish imagination. Gerard...sprawl across the celestial charts. Bode's "Uranographia," as the collection...
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Invaders from Earth: Searching for Life on Mars
Newspaper article from: The Washington Post; 8/12/1990; ; 700+ words
; ...actual discoveries of Viking 1 and other Mars surveys. Along the way, Wilford talks about Johann Elert Bode, the 18th-century astronomer best known for Bode's Law ("each planet is roughly twice as fa
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Se descubre el planeta Urano.(descubrimiento de planeta por el astrónomo William Herschel)(Artículo breve)
Magazine article from: Contenido; 3/1/2005; 494 words
; ...planeta, al que denomin "Estrella de Jorge" en honor del monarca ingls Jorge III (otro investigador, el alemn Johann Elert Bode, propuso el nombre definitivo del cuerpo celeste: Urano). Herschel tambin avist 2 lunas de Urano, los satlites...
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Anniversaries
Newspaper article from: The Independent - London; 1/19/1994; 538 words
; ...engine, 1736; Jacques-Henri Bernardin de Saint Pierre, author, 1737; Joseph Bonomi Snr, architect, 1739; Johann Elert Bode, astronomer, 1747; Robert Edward Lee, Confederate general, 1807; Edgar Allan Poe, author and poet, 1809...
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 "Post-Tribune (IN)")
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COMET IGNITES SPARK OF CURIOSITY
Newspaper article from: Post-Tribune (IN); 1/17/1997; 353 words
; ...YEE/POST-TRIBUNE) CAPTION: From "Comets Through the Ages" CAPTION: 18th century hand-colored etching by Johann Elert Bode. CAPTION: Jason Crabbe, 14, readies slide projectors for an upcoming show on comets. (COLOR)(TINA YEE...
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Johann Elert Bode
Book article from: The Columbia Encyclopedia, Sixth Edition
Johann Elert Bode , 1747-1826, German astronomer. From 1772 to 1825 he was astronomer of the Academy...Wittenberg and is therefore sometimes referred to as Titius's law or the Titius-Bode Law, but it is best known as Bode's law .
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Bode, Johann Elert
Dictionary entry from: Complete Dictionary of Scientific Biography
Bode, Johann Elert ( b . Hamburg, Germany...November 1826) astronomy . Bode, the son of a commercial...master J ü rgen Elert Kruse of Hamburg, had...to astronomy. In 1772 Johann Lambert summoned Bode to the astronomical observatory...
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Planet X
Encyclopedia entry from: The Gale Encyclopedia of Science
...of planetary distances suggested by German astronomer Johann Elert Bode (1747 – 1826). However, a problem later...in 1846, Neptune was discovered by German astronomer Johann Gottfried Galle (1812 – 1910) and Prussian...
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