ETIMOLOGIA DA PALAVRA PLEOCHROISM
Pleo- + -chroism, from Greek khrōs skin colour.
PALAVRAS EM INGLÊS RELACIONADAS COM «PLEOCHROISM»
pleochroism
birefringence
sapphire
biotite
pleochroism
optical
phenomenon
which
substance
appears
different
colors
when
observed
angles
especially
with
polarized
light
minerals
mineralogy
database
dichroism
change
color
evident
mineral
rotated
under
plane
primary
cause
ability
absorb
wavelengths
transmitted
depending
upon
crystallographic
orientations
this
property
optics
encyclopedia
britannica
from
greek
pleiōn
more
chrōs
colour
selective
absorption
crystals
vibrating
planes
general
term
define
certain
exhibiting
viewed
directions
10 LIVROS EM INGLÊS RELACIONADOS COM «PLEOCHROISM»
Descubra o uso de
pleochroism na seguinte seleção bibliográfica. Livros relacionados com
pleochroism e pequenos extratos deles para contextualizar o seu uso na literatura.
The second change in dispersion may be of diagnostic value in distinguishing
minerals in the two compositional ranges Fs15 to Fs50 and Fs50 to Fs80.
Pleochroism. Many orthopyroxenes in the bronzite-hypersthene compositional
range are ...
William Alexander Deer, Robert Andrew Howie, J. Zussman, 1997
Pleochroism is the collective term for any such phenomena. If two main colors
can be observed, it is often called dichroism; three colors, trichroism. Dichroism is
possible only in tetragonal, hexagonal, and trigonal crystal systems; trichroism ...
With the diamond cut, the ideal total reflection and the highest brilliance has been
reached. Pleochroism Some gems appear to have different colors or depth of
color when viewed in different directions. This is caused by the differing
absorption ...
The effect is called pleochroism ('many coloured'), and when the light passing
through the stone is split into two colours or shades the stone is said to be
dichroic; if three colours or shades are produced, the gem is trichroic. Dichroism
is ...
5
Fundamentals Of Optical, Spectroscopic And X-Ray Mineralogy
however, show pleochroism beyond the optical region and are studied by
spectrophotometers, aided by polarisers. This has been discussed in chapter III.
2.4.1. Polarisation colour and pleochroism for mineral identi Heat ion Primarily
colour is ...
6
Mineralogical Applications of Crystal Field Theory
Pleochroism, or dichroism when it occurs in uniaxial crystals, may be observed in
minerals belonging to all crystal systems except the cubic system. This fact
provides one clue to the cause of pleochroism, that it originates within cations in ...
7
Rock Forming Minerals 3B: Layered Silicates Excluding Micas ...
Where both a and y have been determined, the birefringence can be shown to
increase dramatically with increasing Fe'+ (from -0.030 to >0. l00). but because of
the intensity of pleochroism this is difficult to observe. Most stilpnomelanes show
...
William Alexander Deer, Robert Andrew Howie, J. Zussman, 2009
8
Monteregian Treasures: The Minerals of Mont Saint-Hilaire, ...
50° Orientation: Z = b; Y:c = 12° Pleochroism: X greenish-blue, Y pale orange-
yellow, Z brownish-green or violet (CA-4) Biaxial (-): a= 1.688, /3= 1.700, y=
1.704 (589 nm) 2V: meas. = 60°; calc. = 59° Orientation: Z = b; Y:c = 13.5°
Pleochroism: ...
Joseph Anthony Mandarino, Violet Anderson, 1989
9
Crystal Identification with the Polarizing Microscope
COLOR, ABSORPTION, AND PLEOCHROISM Most colored uniaxial crystals
show differential absorption of transmitted light related to vibration directions
associated with e and w. If a different amount of some wavelengths of light is
absorbed ...
R.E. Stoiber, Stearns Anthony Morse, 1994
PLEOCHROISM If white light is transmitted through any substance it will be found
that somewhat less light emerges than entered. In other words, it will be found
that the substance absorbed part of the light. If the amount of light absorbed is ...
4 NOTÍCIAS NAS QUAIS SE INCLUI O TERMO «PLEOCHROISM»
Conheça de que se fala nos meios de comunicação nacionais e internacionais e como se utiliza o termo
pleochroism no contexto das seguintes notícias.
Gems & Gemology Illuminates Sri Lanka's Gem Industry
The issue also reveals the unusual beauty found within non-nacreous pen pearls, a practical look at the phenomenon of pleochroism and its ... «Rapaport, nov 14»
Unravelling a Volcano Using Crystals Under a Microscope
This image is in plain polarized light, so the amphibole are showing one of their diagnostic properties, pleochroism. Image by Erik Klemetti. «Wired News, dez 11»
Rare Ceylon Alexandrite for Sale
Pleochroism: Trichroic – Strong. Absorption spectrum: Corresponding absorption detected. Remarks: Displays a very strong colour change in ... «Internet Stones. COM Media, mai 10»
New Coated Tanzanite Difficult to Detect
In addition, because the tanzanite had some intrinsic color before being coated, the stones still exhibited some of the pleochroism (the ... «Diamonds.net, out 08»
