ETIMOLOGIA DELLA PAROLA RUBIDIUM
From New Latin, from Latin rubidus dark red, with reference to the two red lines in its spectrum.
CHE SIGNIFICA RUBIDIUM IN INGLESE
Rubidio
Rubidium è un elemento chimico con il simbolo Rb ed il numero atomico 37. Rubidium è un elemento metallico morbido e argenteo-bianco del gruppo metallo alcalino, con una massa atomica di 85.4678. Il rubidio elementare è altamente reattivo, con proprietà simili a quelle di altri metalli alcalini, come l'ossidazione molto rapida in aria. Rubidium naturale è un mix di due isotopi: 85Rb, l'unico stabile, costituisce il 72% di esso. Il restante 28% è l'87Rb leggermente radioattivo con una durata media di 49 miliardi di anni, più di tre volte più lungo dell'età stimata dell'universo. I chimici tedeschi Robert Bunsen e Gustav Kirchhoff hanno scoperto il rubidio nel 1861 con il metodo di nuova spettroscopia a fiamma. I composti del Rubidium hanno diverse applicazioni chimiche ed elettroniche. Il metallo Rubidium è facilmente vaporizzato e presenta un comodo intervallo di assorbimento spettrale, rendendolo un bersaglio frequente per la manipolazione laser degli atomi. Il rubidio non è noto per essere necessario per qualsiasi organismo vivente. Tuttavia, gli ioni del rubidio sono gestiti da organismi viventi in un modo simile agli ioni di potassio, essendo attivamente assorbiti dalle piante e dalle cellule animali.
definizione di rubidium nel dizionario inglese
La definizione di rubidio nel dizionario è un elemento radioattivo morbido altamente reattivo del gruppo di metalli alcalini; il sedicesimo elemento più abbondante nella crosta terrestre, che si verifica principalmente in pollucite, carnallite e lepidolite. Viene utilizzato in valvole elettroniche, fotocellule e vetri speciali. Simbolo: Rb; numero atomico: 37; peso atomico: 85,4678; emivita di 87Rb: 5 × 1011 anni; valenza: 1, 2, 3 o 4; densità relativa: 1.532, 1.475; punto di fusione: 39,48 ° C; punto di ebollizione: 688 ° C.
PAROLE IN INGLESE ASSOCIATE CON «RUBIDIUM»
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10 LIBRI IN INGLESE ASSOCIATI CON «RUBIDIUM»
Scopri l'uso di
rubidium nella seguente selezione bibliografica. Libri associati con
rubidium e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
The Alkali Metals: Lithium, Sodium, Potassium,
Rubidium, ...
Explains the characteristics of alkali metals, where they are found, how they are used by humans, and their relationship to other elements found in the periodic table.
2
The History and Use of Our Earth's Chemical Elements: A ...
When rubidium gas is placed in sealed glass cells along with an inert gas, it
becomes a rubidium-gas cell clock. Because of the consistent and exact
frequency (vibrations) of it atoms, it is a very accurate timekeeper. Rubidium and
selenium ...
3
The Radiochemistry of
Rubidium
The information "that follows generally describes the chemical behavior of
rubidium and its compounds. Many of these reactions have been used or can be
used in devising radiochemical analysis methods for the rubidium radionuclides.
4
International critical tables of numerical data, physics, ...
Rubidium. — (Continued) X-ray series, limiting frequencies, 6 : 35 -Cesium* -
Mercury* -Potassium* -Sodium Photoelectric sensitivity, wave length for maximu,
6: 68 -Sulfur Freezing point-solubility, 4 : 26 Rubidium acetate, solubility in water,
...
Edward Wight Washburn, Callie Hull,
1933
5
Handbook of Optical Materials
Rubidium bromide RbBr Cubic (Fm3m) Rubidium cadmium fluoride RbCdF3
Cubic (Pm3m) Rubidium calcium fluoride RbCaF3 Cubic (Pm3m) Rubidium
chloride RbCl Cubic (Fm3m) Rubidium dihydrogen arsenate (RDA) RbH2As04 ...
6
Handbook on Metals in Clinical and Analytical Chemistry
the brain and other nervous tissue that prefers potassium to rubidium, and
consequently rubidium levels are considerably less [29-31]. At least 90% of
rubidium measured in whole blood is located in erythrocytes [32,33] and
therefore the ...
Hans Seiler, Astrid Sigel, Helmut Sigel,
1994
7
Collinear Laser Spectroscopy of Francium and
Rubidium with ...
Accordingly most of the rubidium condensation in our vacuum system was in the
immediate vicinity of the neutralizer without any cold trapping required. 3.5
Experimental results of ion beam neutralization Using the apparatus described
we ...
Jerry Frederick Sell,
2007
8
Bulletin of the National Research Council
Soc. A100: 182-190 (1921-22). Spectra variously called "Grundspektrum," spark
spectrum, spectrum of ionized potassium. ♢Zeeman, P., and Dik, H. Ann. Physik
71: 199-203 (1923). Same. Rubidium ♢Reinheimmer, H. Ann. Physik 71: 162-177
...
9
CRC Handbook of Laser Science and Technology Supplement 2: ...
Name Formula Classifical Rubidium gallium sulfate RbGa(SO4)2 U-111
Rubidium dihydrogen arsenate (RDA) RbH,AsO4 U-170 Rubidium dihydrogen
phosphate (RDP) RbH2PO4 U-157 Rubidium indium molybdate RbIn(MoO4)2 U-
131 ...
10
Studies of Atomic Properties of Francium and
Rubidium
We use this new experimental setup as well as a rubidium glass cell to perform
precision studies of atomic and nuclear properties of rubidium. Spectroscopic
studies of the most abundant isotopes of rubidium, 85Rb and 87Rb, are a vital ...
Adrian Perez Galvan,
2009
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «RUBIDIUM»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
rubidium nel contesto delle seguenti notizie.
Measuring The Accuracy Of A Rubidium Standard
A rubidium standard, or rubidium atomic clock, is a high accuracy frequency and time standard, usually accurate to within a few parts in 1011. This is still several ... «Hackaday, mag 15»
ISRO is developing Rubidium Atomic Clock For IRNSS Program
ISRO is developing a Rubidium based atomic clock to be used in its ambitious IRNSS aka Indian Regional Navigation Satellite System program, reports The ... «CrazyEngineers, mag 15»
This Strange Metal Might Be the Newest State of Matter
The team, led by Kosmas Prassides, says they've created what's called a Jahn-Teller metal by inserting rubidium, a strange alkali metal element, into buckyballs, ... «Popular Mechanics, mag 15»
Examining Einstein – precise experiments using lasers in space
High-power diode laser module for space applications: Micro-integrated Extended Cavity Diode Laser (ECDL) for laser spectroscopy of rubidium atoms in space ... «R & D Magazine, apr 15»
News Brief: Brrrrr — that's really cold!
Stanford physicists used images like this one, showing a clumping of rubidium atoms, to determine that those atoms had achieved a record-low temperature. «Science News for Students, apr 15»
Rubidium atoms used to record coldest temperature — ever
CLUMPED AND COLD Stanford University physicists used images like this one, which depicts the concentration of rubidium atoms, to determine that they had ... «Science News, apr 15»
Microsemi unveils enhanced quantum rubidium miniature atomic clock
Microsemi is making available an enhanced Quantum Rubidium Miniature Atomic Clock (MAC) SA.3X family. Based on Microsemi's coherent population ... «New Electronics, apr 15»
Oscilloquartz Launches New Rubidium Access Device at WSTS
This new product is the first access network device in the industry to offer Rubidium-based timing and synchronization capabilities along with a unique holdover ... «GlobeNewswire, mar 15»
Quantum memory storage to help quantum communications go the …
Coated on the inside with rubidium, the container was evacuated of air and filled with krypton gas and the cell magnetically shielded to protect the interior from ... «Gizmag, nov 14»
Vectron International Partners With AccuBeat Ltd Providing …
"AccuBeat's rubidium based solutions provide some of the highest stability and lowest noise performance offered in the market today. Their products serve as the ... «GlobeNewswire, nov 14»