QUE SIGNIFIE CONTINUOUS SPECTRUM EN ANGLAIS
Spectre continu
En physique, un spectre continu signifie généralement un ensemble de valeurs pour une certaine quantité physique qui est mieux décrite comme un intervalle de nombres réels. Il s'oppose au spectre discret, un ensemble de valeurs discrètes au sens mathématique, où il existe un écart positif entre chaque valeur et la suivante. L'exemple classique d'un spectre continu, à partir duquel le nom est dérivé, est la partie du spectre de la lumière émise par les atomes excités d'hydrogène qui est due aux électrons libres qui se lient à un ion hydrogène, qui se propage en douceur sur un large Gamme de longueurs d'onde; Contrairement aux lignes discrètes dues à des électrons tombant d'un état quantique lié à un état d'énergie plus faible. Comme dans cet exemple classique, le terme est le plus souvent utilisé lorsque la gamme de valeurs d'une grandeur physique peut avoir à la fois une partie continue et une partie discrète, que ce soit en même temps ou dans des situations différentes. Dans les systèmes quantiques, les spectres continus sont généralement associés à des particules libres, telles que des atomes dans un gaz, des électrons dans un faisceau d'électrons ou des électrons de bande de conduction en métal.
définition de continuous spectrum dans le dictionnaire anglais
La définition du spectre continu dans le dictionnaire est un spectre qui contient ou semble contenir toutes les longueurs d'onde mais pas les lignes du spectre sur une grande partie de sa gamme. Le spectre d'émission des solides incandescents est continu; Les spectres de bremsstrahlung constitués d'un grand nombre de raies peuvent apparaître continus.
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10 LIVRES EN ANGLAIS EN RAPPORT AVEC «CONTINUOUS SPECTRUM»
Découvrez l'usage de
continuous spectrum dans la sélection bibliographique suivante. Des livres en rapport avec
continuous spectrum et de courts extraits de ceux-ci pour replacer dans son contexte son utilisation littéraire.
1
Sturm-Liouville Theory: Past and Present
(g) Chapter III: at the start of this chapter there are the Weyl definitions of the point
spectrum (Punktspektrum), and the continuous spectrum (Strecken- spektrum)
involving eigendifferentials; the latter definition agrees with the earlier definition
of ...
Werner O. Amrein, Andreas M. Hinz, David P. Pearson,
2005
2
Turbulence and Transition Modelling: Lecture Notes from the ...
This means that the discrete modes cannot describe an arbitrary disturbance and
hence the spectrum must be complemented. On basis of numerical
experimentation, Mack suggested the complement to be a continuous spectrum
located at cr ...
3
Spectral Theory and Mathematical Physics: Ergodic ...
to construct the first explicit example with purely singular continuous spectrum. [
63] proves that whenever such potentials are sufficiently sparse, the
corresponding spectrum must be purely one-dimensional (namely, the spectral
measure gives ...
4
Publications of the Lick Observatory
If continuous spectrum present it would not be visible because of spectrum of
involved bright star Moore and Selga observed strong continuous spectrum, but
no bright lines This is nebula around E Monocerotis. Moore and Selga found
strong ...
5
Spectrum Analysis in Its Application to Terrestrial ...
manent and complete spectrum of bands (I. order) ; 5, the pure continuous
spectrum. That the shaded spectrum of bands (Fig. 69, No. 1) differs essentially
from the unshaded continuous spectrum, is shown by Wullner's observations with
the ...
Heinrich Schellen, Sir William Huggins,
1872
6
Atomic And Nuclear Physics
The continuous spectrum is also known as general spectrum or white spectrum.
A typical continuous spectrum is shown in Fig. 4.3. It is evident that by varying the
X-ray tube accelerating potential, the A,^,, shifts toward left i.e. the X-rays attain ...
8.3 ABSORPTION SPECTRA If light exhibiting continuous spectrum is passed
through certain gases, solids or liquids, it is observed that some dark lines or
bands appear in spectrum. This is known as absorption spectrum. The Bohr's
theory of ...
3 Continuous Spectrum : In this spectrum, wavelengths of all colours from red to
violet are present. There is no dark space between these colours and the colours
are so intermixed that there is no definite line of separation between two colours.
9
Academic Press Dictionary of Science and Technology
Mathematics, let T: X — > X be a linear operator on a complex Banach space X. I
the identity operator on X. X a complex number, and = XV - T. Then X belongs to
the continuous spectrum of T if (a) 7^' exists, (b) 7"^' is not continuous, and (c) ...
Christopher G. Morris,
1992
10
The spectral theory of geometrically periodic hyperbolic ...
In the elliptic case the continuous spectrum has the following description:
Theorem: The ahsolutely continuous spectrum is of locally finite multiplicity in [0, •
) ; it s union of intervals: CD a.c. . , i' 1 i=l This is an e > 0 such that O(-A) n [0,e) is
...
10 ACTUALITÉS CONTENANT LE TERME «CONTINUOUS SPECTRUM»
Découvrez de quoi on parle dans les médias nationaux et internationaux et comment le terme
continuous spectrum est employé dans le contexte des actualités suivantes.
What You're Doing Wrong When It Comes To Sun, Sunscreen And …
Dr. Krant is straight to the point: You're wrong. “Skin color in reality is a continuous spectrum,” she explains. “Even the darkest skin types are at ... «Elite Daily, juin 15»
Canai International awards high achievers at glitzy gala dinner
The continuous spectrum energy released by Canai Spectrum products to the body is said to bring various health and beauty benefits to the ... «Citizen Journalist Malaysia, juin 15»
Singapore's Next Lap: Interview With A*STAR's Dr Benjamin Seet
Research and innovation is a continuous spectrum—it is not always possible to distinguish what is basic and what is translational, and this will ... «Asian Scientist Magazine, juin 15»
How Yoga Helped Overcome The Mind-Body Divide
Thousands of years of Indic thought saw mind and matter as the same continuous spectrum. It provides the basis on which the Yoga system ... «Swarajya, juin 15»
DoT rule may keep spectrum swapping out of reach of certain …
3G and 4G require large chunks of continuous spectrum. As a result, allowing operators to rearrange their fragmented spectrum could lead to ... «Real Time News, India, juin 15»
A digitally generated ultrafine optical frequency comb for spectral …
... directly sample a continuous spectrum at the same time. Such sampling would yield low spectral resolution, e.g., 10 GHz corresponds to 0.08 ... «Nature.com, juin 15»
Frightened of the unknown? How uncertainty fuels anxiety
"It's a continuous spectrum where uncertainty plays an increasing role, increasing the suckiness of unpredictability." While understandable ... «Stuff.co.nz, juin 15»
Xenon Flash Modules
... new xenon flash modules from Heraeus Noblelight America LLC provide a broad, continuous spectrum from deep UV to near-infrared (190 to ... «Photonics.com, juin 15»
MAXIMUS and MicroPact Announce Strategic Alliance to Combine …
Under the alliance, MAXIMUS will continue to use MicroPact's entellitrak® software to bring a continuous spectrum of case management and ... «PR Newswire, mai 15»
The Female Athlete Triad
The new Triad model has each component of the female athlete triad on a continuous spectrum. These spectrums range from a healthy state to ... «The Eagle, avril 15»