Some clear topaz crystals from Brazilian pegmatites can reach boulder size and weigh hundreds of pounds.

Some halos can also be seen under a cirrus cloud, but diamond dust can create much more spectacular displays because the ice crystals are all around the observer.

Some specimens have a red iridescence within the gray-black crystals ; these are called " ruby sphalerite.

Some habits of a mineral are unique to its variety and locality: For example, while most sapphires form elongate barrel-shaped crystals, those found in Montana form stout tabular crystals.

Some crystals form defects which causes a residual entropy.

Some crystals are formed in three-dimensional rhomboids.

Some septaria may also contain small calcite stalagtites and well-shaped millimetric pyrite single crystals.

Some sulfates formed into large crystals which later dissolved to leave vugs.

Some organic scintillators are pure crystals.

Some non-alkali crystals include: BaF < sub > 2 </ sub >, CaF < sub > 2 </ sub >( Eu ), ZnS ( Ag ), CaWO < sub > 4 </ sub >, CdWO < sub > 4 </ sub >, YAG ( Ce ) ( Y < sub > 3 </ sub > Al < sub > 5 </ sub > O < sub > 12 </ sub >( Ce )), GSO, LSO.

Some sulfates formed into large crystals which later dissolved to leave vugs.

Some transparent crystals have also been used for Kerr modulation, although they have smaller Kerr constants.

Some of these, the nematic liquid crystals, also show an alignment effect between the layers.

Some red wines, particularly those designed for early drinking, are cold stabilized so as to prevent the precipitation of unsightly tartrate crystals in the bottle.

Some facets of a crystal ( often the close-packed planes ) grow more rapidly than others, and the crystallites for which one of these planes faces in the direction of growth will usually out-compete crystals in other orientations.

Some liquid crystals are capable of displaying different colors at different temperatures.

Some artificial neural networks that have been implemented as optical neural networks include the Hopfield neural network and the Kohonen self-organizing map with liquid crystals.

Some elements such as Sulfur, while usually occurring in polycrystalline form, may also occur as single crystals.

Some examples of phases that may form by way of nucleation in liquids are gaseous bubbles, crystals or glassy regions.

Some areas within the wilderness display bedrock composed of metamorphic schists with large garnet crystals.

Some stones contain groups of parallel negative crystals.

Some painters have less interest in the experience of the moment, with its attendant urgencies and ambiguities, than in looking beyond the flux of particular impressions to a higher, more serene level of truth.

Some of the earlier episodes have touches of the supernatural, as suited to the legendary background.

Some historians have found his point of view not to their taste, others have complained that he makes the Tory tradition appear `` contemptible rather than intelligible '', while a sympathetic critic has remarked that the `` intricate interplay of social dynamics and political activity of which, at times, politicians are the ignorant marionettes is not a field for the exercise of his talents ''.

Some of these thoughts -- not all of them -- have taken organized form in later years.

He said, `` Some have criticized your book as being neither literary criticism nor history.

Some have felt that Washington Irving comes out rather slimly, but let them look at the title of the book ''.

Some of us have imagination and sensibility too.

Some of former President Truman's off-the-cuff discourses have been in that vein.

Some of the stumps are as much as three feet long, but most of them have been flattened by the pressure of the overlying sediments.

Some memorable plays have been drawn from books, notably Life With Father and Diary Of Anne Frank.

Some families already have held weekend rehearsals in their home shelters to learn the problems and to determine for themselves what supplies they would need.

Some special health requirements might have to be met.

Some weapons systems have become obsolescent while still in production, and some while still under development.

Some offices have very broad responsibilities, touching on almost all aspects of a university's instructional program.

Some manufacturers have had the foresight to provide a socket for the chuck key ; ;

Some recreation features, such as scenic values and water interest, also have greater overall value than other interests.

-- Some areas may already have been improved and contain buildings, roads, utilities, cleared land, etcetera which may raise the cost of the site.

Some distribution costs are kept up by competitive pressure, some by the fact that the customers have come to expect certain niceties and flourishes.

Some men have no talent for or interest in management ; ;

Some agents have been shown to be much more toxic or infectious to experimental animals when exposed to aerosols of optimum particle size than by the natural portal.

Some of those who question the value of BW have assumed that the only potential would be in the establishment of epidemics.

Some members of the bee family have become idlers, social parasites that live at the expense of their hardworking relatives.

Some investigators have found a parallelism between remissions and return of the sympathetic reactivity of the hypothalamus to the normal level as indicated by the Mecholyl test and, conversely, between clinical impairment and increasing deviation of this test from the norm.

Some of the oldest, most persistent, and most cohesive forms of social groupings have grown out of religion.