10 PORTUGUESE BOOKS RELATING TO «CONCHOIDAL»
Discover the use of
conchoidal in the following bibliographical selection. Books relating to
conchoidal and brief extracts from same to provide context of its use in Portuguese literature.
1
Motion Geometry of Mechanisms
Fixed and moving polode of the
conchoidal motion. The x- and .y-axes in that
plane are shown in the figure. The polar coordinates r and <p of P in the moving
plane are related by the equation r = a secV (?rm). Here, r = AP. The relation is
the ...
2
Arrowheads and Stone Artifacts
Flint materials were most suitable for artifact manufacture because of their
characteristic conchoidal fracture upon the application of pressure. Conchoidal
fracture means that the material breaks in a circular or semicircular manner rather
than ...
3
Color Atlas and Manual of Microscopy for Criminalists, ...
... phosphoresce Fracture Conchoidal Conchoidal Conchoidal to granular
Conchoidal to granular Conchoidal Conchoidal Perfect step break Conchoidal
Conchoidal Splintery; fibrous Granular and splintery Greasy; dull; conchoidal
Greasy; ...
Nicholas Petraco, Thomas Kubic, 2003
4
Natural Materials: Sources, Properties, and Uses
... directional perfect cleavage Conchoidal Uneven fracture Conchoidal fracture
Conchoidal fracture Conchoidal fracture Conchoidal fracture Conchoidal fracture
Conchoidal fracture Conchoidal fracture Conchoidal fracture Conchoidal fracture
...
Jean Frances DeMouthe, 2006
5
Forensic Science: An Introduction to Scientific and ...
Conchoidal Fracture Right Angle Hackle Marks Figure 16.9 Expanded view of the
conchoidal marks that appear on a fractured glass edge. The smaller hackle
marks and the missing core area mentioned in Figure 14. 8B are also shown.
Stuart H. James, Jon J. Nordby, Suzanne Bell, 2005
6
A treatise on the external, chemical, and physical ...
Conchoidal, is composed of concave and convex roundish elevations and
depressions, which are more or less regular : when regular, they are
accompanied with concentric ridges,- as in many shells, and hence present a
conchoidal ...
7
A treatise on the external character of minerals
Conchoidal, is composed of concave and convex roundish elevations and
depressions, which are more or less regular: when regular, they are
accompanied with concentric ridges, as in many shells, and hence present a
conchoidal ...
Robert Jameson, Abraham Gottlob Werner, 1816
Grey, greenish, brown ; chatoyant ; fracture even or imperfectly conchoidal. 25.
Opal, var. y. <t. «. Colours dark, green, red, yellow; fracture conchoidal ; lustre
resinous; translucent or opake. 25. Chalcedony. Bluish, white, or grey ; fracture
even, ...
9
Encyclopaedia Britannica: Supplement to the 4th, 5th, and ...
Mineralogy, ening internally, and vitreo-resinous, and fracture s—\^"*' small
conchoidal, arc named iron-flint. Those varieties which exhibit grey, yellow,
brown, red, and green, generally muddy colours, and which occur massive and in
...
10
Aspects of Ancient Indian Technology
Bluish green (approximating the shade of turquoise); translucent; has a typical
conchoidal fracture; Sp. gr. 2.39. Under microscope small round and elleptical air
bubbles are seen. There are no inclusions. No devitrification. 3. Olive green; it is
...
10 NEWS ITEMS WHICH INCLUDE THE TERM «CONCHOIDAL»
Find out what the national and international press are talking about and how the term
conchoidal is used in the context of the following news items.
Global Corundum Market - Segmented by Variety, End-User Industry …
... surface at right angles to the axis of elongation through successive reductions in size unlike synthetic corundum (alumina), which has a conchoidal fracture. «PR Newswire, Sep 15»
Getting Back to Basics at a Primitivist School
The hammerstone has to hit the rock at the exact right spot with the exact right force to produce a conchoidal fracture and flake off a precise piece from the ... «VICE, May 15»
Neanderthals May Have EATEAN Dead Bodies As Their Ritual Rites
“The upper edge exhibits marks of a “post-mortem” impact with conchoidal markings (those that does not follow natural separation positions).” “Given the ... «Empire State Tribune, Apr 15»
Neanderthals manipulated the bodies of adults and children shortly …
"The upper edge exhibits marks of a "post-mortem" impact with conchoidal markings (those that does not follow natural separation positions)," the study sets out. «Phys.Org, Apr 15»
Arrowhead Day draws pointed interest to Crestline
“The rock has to break on a conchoidal fracture,” he said. Snyder, an employee at Mohican Outdoor School, said he's been knapping stone for the past 14 years, ... «Richland Source, Mar 15»
Ancient Technologies Featured at UA's Moundville
Called a conchoidal fracture, this type break is characteristic to glass and certain other stones, like flint, chert and obsidian. By hitting the top edge of an object, ... «UA News, Feb 15»
Pegadas de dinossauros em mina de diamantes em Angola
Conheceram o sílex e a sua característica fractura conchoidal, aprenderam a encontrá-lo nas suas jazidas e tiraram partido desses conhecimentos para ... «AngoNotícias, Nov 14»
Volcanoes as a resource, today and yesterday
When broken, it breaks into a “conchoidal fracture,” just like glass in a window. ... but still enough to allow for conchoidal fractures that make it nearly as sharp as ... «Imperial Valley Press, Oct 14»
Maghemite – Occurrence, Properties, and Distribution
Maghemite can be identified in the field by its dark brown color and opaque form, with sub-conchoidal fractures and massive granular structure. This mineral has ... «Azomining, Jun 14»
Highland man shares passion for knapping
These artists take advantage of the conchoidal fracturing possible in certain rocks such as obsidian, chert and flint. Brown first shapes the stone using a saw and ... «Daily Herald, Dec 13»
