WAS BEDEUTET RUBIDIUM AUF ENGLISCH
Rubidium
Rubidium ist ein chemisches Element mit dem Symbol Rb und der Ordnungszahl 37. Rubidium ist ein weiches, silbrig-weißes metallisches Element der Alkalimetallgruppe mit einer Atommasse von 85.4678. Elementares Rubidium ist hochreaktiv, mit ähnlichen Eigenschaften wie andere Alkalimetalle, wie eine sehr schnelle Oxidation in der Luft. Natürliches Rubidium ist eine Mischung aus zwei Isotopen: 85Rb, die einzige stabile, stellt 72% davon dar. Die restlichen 28% sind die leicht radioaktiven 87Rb mit einer Halbwertszeit von 49 Milliarden Jahren - mehr als dreimal länger als das geschätzte Alter des Universums. Die deutschen Chemiker Robert Bunsen und Gustav Kirchhoff entdeckten 1861 durch die neu entwickelte Methode der Flammenspektroskopie Rubidium. Rubidiums Verbindungen haben verschiedene chemische und elektronische Anwendungen. Rubidium-Metall ist leicht verdampft und hat einen praktischen spektralen Absorptionsbereich, so dass es ein häufiges Ziel für die Laser-Manipulation von Atomen ist. Rubidium ist für alle lebenden Organismen nicht bekannt. Allerdings werden Rubidium-Ionen von lebenden Organismen in ähnlicher Weise wie Kalium-Ionen behandelt, indem sie aktiv von Pflanzen und von tierischen Zellen aufgenommen werden.
Definition von rubidium im Wörterbuch Englisch
Die Definition von Rubidium im Wörterbuch ist ein weiches hochreaktives radioaktives Element der Alkalimetallgruppe; das 16. häufigste Element in der Erdkruste, hauptsächlich in Pollucit, Carnallit und Lepidolith vorkommend. Es wird in elektronischen Ventilen, Fotozellen und Spezialglas verwendet. Symbol: Rb; Atomnummer: 37; Atomgewicht: 85,4678; Halbwertszeit von 87Rb: 5 × 1011 Jahre; Wertigkeit: 1, 2, 3 oder 4; relative Dichte: 1,532, 1,475; Schmelzpunkt: 39,48 ° C; Siedepunkt: 688 ° C.
10 BÜCHER, DIE MIT «RUBIDIUM» IM ZUSAMMENHANG STEHEN
Entdecke den Gebrauch von
rubidium in der folgenden bibliographischen Auswahl. Bücher, die mit
rubidium im Zusammenhang stehen und kurze Auszüge derselben, um seinen Gebrauch in der Literatur kontextbezogen darzustellen.
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 NACHRICHTEN, IN DENEN DER BEGRIFF «RUBIDIUM» VORKOMMT
Erfahre, worüber man in den einheimischen und internationalen Medien spricht und wie der Begriff
rubidium im Kontext der folgenden Nachrichten gebraucht wird.
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, Mai 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, Mai 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, Mai 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, Mär 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»