CHE SIGNIFICA BRAGG'S LAW IN INGLESE
La legge di Bragg
Nella fisica, la legge di Bragg dà gli angoli per una dispersione coerente e incoerente da un reticolo cristallino. Quando i raggi X sono incidenti su un atomo, fanno il movimento elettronico della nuvola come qualsiasi altra forma elettromagnetica. Il movimento di queste cariche ricircherà onde con la stessa frequenza; Questo fenomeno è conosciuto come Rayleigh scattering. Le onde sparpagliate possono essere sparse, ma questa dispersione secondaria è considerata trascurabile. Un processo simile si verifica sulla dispersione delle onde neutrone dai nuclei o da una coerente interazione di spin con un elettrone non combattuto. Questi campi d'onda ri-emessi interferiscono tra loro in modo costruttivo o distruttivo, producendo un modello di diffrazione su un rivelatore o un film. Lo schema di interferenza dell'onda è la base dell'analisi della diffrazione. Questa analisi è chiamata diffrazione Bragg. La diffrazione di Bragg è stata prima proposta da William Lawrence Bragg e William Henry Bragg nel 1913 in risposta alla loro scoperta che i solidi cristallini produssero sorprendenti schemi di raggi X riflessi. Hanno scoperto che questi cristalli, a determinate lunghezze d'onda specifiche e angoli di incidenza, hanno prodotto cifre intense di radiazione riflessa.
definizione di Bragg's law nel dizionario inglese
La definizione della legge di Bragg nel dizionario è il principio che quando un raggio di raggi X di lunghezza d'onda λ entra in un cristallo, l'intensità massima del raggio riflesso si verifica quando sin θ = nλ / 2 d, dove θ è il complemento del angolo di incidenza, n è un numero intero, e d è la distanza tra gli strati di atomi.
PAROLE IN INGLESE ASSOCIATE CON «BRAGG'S LAW»
Bragg's law ·
bragg ·
theta ·
reciprocal ·
lattice ·
example ·
animation ·
youtube ·
calculator ·
equation ·
physics ·
gives ·
angles ·
coherent ·
incoherent ·
scattering ·
from ·
crystal ·
when ·
rays ·
incident ·
atom ·
they ·
make ·
electronic ·
cloud ·
move ·
does ·
electromagnetic ·
wave ·
movement ·
hyperphysics ·
condition ·
maximum ·
intensity ·
contained ·
above ·
allow ·
calculate ·
details ·
about ·
structure ·
earth ·
science ·
educational ·
resource ·
refers ·
simple ·
sinθ ·
derived ·
physicists ·
reveal ·
atomic ·
crystals ·
page ·
mirrored ·
supplementary ·
material ·
which ·
reflects ·
surface ·
substance ·
travelled ·
less ·
distance ·
than ·
plane ·
atoms ·
inside ·
serc ·
reflection ·
accordance ·
darrell ·
henry ·
louisiana ·
state ·
university ·
nelson ·
massachusetts ·
lowellbragg ·
would ·
actually ·
take ·
place ·
became ·
must ·
surely ·
most ·
well ·
equations ·
laue ·
history ·
november ·
wilhelm ·
röntgen ·
discovered ·
while ·
working ·
defined ·
yourdictionary ·
fundamental ·
crystallography ·
equals ·
dsin ·
thgr ·
where ·
integer ·
wavelength ·
beam ·
deduction ·
informal ·
interpretation ·
also ·
graphically ·
easy ·
hypothesis ·
10 LIBRI IN INGLESE ASSOCIATI CON «BRAGG'S LAW»
Scopri l'uso di
Bragg's law nella seguente selezione bibliografica. Libri associati con
Bragg's law e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
The Basics of Crystallography and Diffraction
However, the sum (AB + BC) is unchanged and is again equal to 2dhkl sinθ (see
Exercise 8.3). The important point is that Bragg's law applies irrespective of the
positions of the atoms in the planes; it is solely the spacing between the planes ...
Christopher Hammond,
2009
2
Solid State Chemistry and Its Applications
Therefore 2d sin 6 = nX Bragg" s Law (5.3) When Bragg's Law is satisfied, the
reflected beams are in phase and interfere constructively. At angles of incidence
other than the Bragg angle, reflected beams are out of phase and destructive ...
3
Annual Reports in Computational Chemistry
Nothing illustrates more clearly the problem of modern crystallographic education
than Bragg's Law. It is the one piece of knowledge every chemist has regarding X
-ray diffraction. This is not surprising in that the law and typically its derivation ...
David C. Spellmeyer, Ralph A. Wheeler,
2011
4
Fundamentals of Nanoscale Film Analysis
Hence,Bragg's Law may be written as (s−s0)/λ = d∗hkl, (8.20) ∣ 2(1/λ)sinθ = ∣d
∗hkl ∣ ∣ = 1/dhkl, 2dhkl sinθ = λ. Hence, constructive interference occurs, or
Bragg's law is satisfied when the vector |s − s0 |/λ coincides with the reciprocal ...
Terry L. Alford, L.C. Feldman, James W. Mayer,
2007
17.4.7 Bragg's Law In 1913, W.L. Bragg gave the simple theory of X-ray
diffraction.2 The parallel planes of atoms reflect the incident beam of X-rays as
shown in Fig. 17.10. The reflected rays QR and TZ interfere constructively and
produce the ...
6
Physical Biochemistry: Principles and Applications
Bragg's law of diffraction. (a) X-rays incident onsuc- cessive latticeplanes at
anangle θ arereflected whennλ = 2d sin θ. where d is the distance between
planes. (b) This is because successive lattice planes which obey Bragg's law
give rise to ...
7
Engineering Physics I: For WBUT
6.2 Diffraction of X-rays by crystal planes and Bragg's law The visible light rays
when pass through a sharp edge of an object can form some bright regions
inside the geometrical shadow of the object. This is due to the bending nature of
light, ...
The working relation of the Bragg's law can be derived by considering parallel
lattice planes a distance d apart, as shown in Figure 3.2. A parallel beam of
monochromatic radiation is incident in the plane of the paper. In x-ray
crystallography, ...
Dr. Om Prakash Pahuja,
2005
9
Atkins' Physical Chemistry
Moreover, several techniques are now available for sampling large amounts of
data, including area detectors and image plates, which sample whole regions of
diffraction patterns simultaneously. (b) Bragg's law An early approach to the ...
Peter Atkins, Julio de Paula,
2014
10
Physical Chemistry for the Life Sciences
Answer: 0.19 nm, 0.065 nm (d) Bragg's law The earliest approach to the analysis
of X-ray diffraction patterns treated a plane of atoms as a semitransparent mirror
and modeled the crystal as stacks of reflecting planes of separation d (Fig.
Peter Atkins, Julio de Paula,
2011
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «BRAGG'S LAW»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
Bragg's law nel contesto delle seguenti notizie.
Identifying Swelling Clays with the D2 PHASER
The associated reflection in diffraction data will shift to a larger d-spacing and smaller diffraction angle as predicted by Bragg's Law. As Bragg's ... «Azomining, giu 15»
Obeying a higher law
These various physical and mathematical laws and processes go by a variety of exotic and poetic names: Bragg's Law, Einstein's Field ... «Napa Valley Register, giu 15»
An Introduction to the Principles and Applications of Parallel Beam …
Bragg's Law enables for higher order reflections (n = 2, 3, 4. ... be placed on a Rowland circle of radius, R (Figure 2) to satisfy Bragg's Law. «Azom.com, mag 15»
Crystal histories and mysteries revealed
... live and animated explanations of the technique (including the best demonstration of Bragg's law that I have ever seen) is rich and satisfying. «The Guardian, set 14»
Live from inside a battery: Researchers observe the phenomenon of …
The incident neutron beam is diffracted according to Bragg's law and collected in a detector. Using these signals, the researchers were able to ... «Phys.Org, set 14»
UWA celebrates Australian link in scientific breakthrough
Since the Braggs were awarded their Nobel Prize in 1915, 28 Nobel Prizes have been awarded that are directly attributed to Bragg's Law and ... «WA today, ago 14»
Google honors Dorothy Hodgkin's X-ray vision
... Bragg's law, which describes the mathematical relationship between the X-rays' wavelength, the distance between the planes in the crystals' ... «Christian Science Monitor, mag 14»
Bragg Equation - Definition
Bragg's law describes the angles for the coherent and incoherent scattering from a crystal lattice. As per Bragg's law, when X-rays are scattered ... «AZoOptics.com, mag 14»
Data-mining for crystal 'gold' at SLAC's X-ray laser
The software finds new ways to precisely match LCLS data with Bragg's Law, the 101-year-old discovery that describes the mathematics of how ... «Phys.Org, mar 14»
Explainer: what is X-ray crystallography?
Lawrence Bragg then came up with a formula, now known as Bragg's law, that could be used to extracted this information allowing him to work ... «The Conversation, feb 14»