Its clarity and good optical properties are other important factors.

Then in 2 we show that any line involution with the properties that ( A ) It has no complex of invariant lines, and ( B ) Its singular lines form a complex consisting exclusively of the lines which meet a twisted curve, is necessarily of the type discussed in 1.

Its chemical and physical properties are so similar to that of natural amethyst that it can not be differentiated with absolute certainty without advanced gemnological testing ( which is often cost-prohibitive ).

Its purgative properties are important ( known as la purga or " the purge ").

Its properties come solely from the power of unlimited recursion.

Its breakdown products and metabolites, DDE and DDD, are also highly persistent and have similar chemical and physical properties.

Its first clause promised the freedom of the church and the security of its properties, and succeeding clauses similarly reassured the propertied class.

Its antibacterial properties have also been demonstrated scientifically, although they are markedly weaker than those from a number of other plants studied.

Its sources include building exterior and interior lighting, advertising, commercial properties, offices, factories, streetlights, and illuminated sporting venues.

Its usefulness in these applications is derived from its unique electrical and thermal insulating properties and its mechanical properties, which allow it to be cut, punched, stamped, and machined to close tolerances.

Its relative rarity on Earth, like that of helium, is due to its relative lightness, high vapor pressure at very low temperatures, and chemical inertness, all properties which tend to keep it from being trapped in the condensing gas and dust clouds which resulted in the formation of smaller and warmer solid planets like Earth.

Its various media properties reach about 360 million people monthly.

Its properties were explored in detail by the British meteorologist G. M. B. Dobson, who developed a simple spectrophotometer ( the Dobsonmeter ) that could be used to measure stratospheric ozone from the ground.

Its anti-androgenic properties reduce the level of free testosterone in the blood, while leaving total testosterone and DHEA unaffected.

Its properties were unique due to the special smelting and reworking of the steel creating networks of iron carbides described as a globular cementite in a matrix of pearlite.

Its main purpose is to clarify the properties of matter in aggregate, in terms of physical laws governing atomic motion.

Its aim is to describe and explain the common properties and the structural diversity of the world's languages.

Its physical properties shape the hydrosphere and are an essential part of the water cycle and climate.

Its thermodynamic properties determine evaporation and the thermal gradient in the atmosphere.

Its properties are quite different from those of the set of alums described above.

Its divine aspect combined with its habitat in the earth between the roots of plants made it an animal with chthonic properties connected to the afterlife and immortality.

Its mechanical properties depend significantly on variables such as the extent and type of branching, the crystal structure and the molecular weight.

Its more recent meaning as a category of elements with intermediate or hybrid properties did not become widespread until the period 1940 – 1960.

Its size is determined by its function as a glycogen and fat storage unit, and may change with the seasons as these reserves are built or used up.

Its weight also makes it relatively easy to move and carry, however its shape is generally not very compact and it may be difficult to stow unless a collapsing model is used.

Its coastal acquisition may have been one reason yellow amber came to be designated by the same term as ambergris.

Its mission may be to support the development, testing, and training phases for new aircraft weapons systems or research projects.

Its function is to control the expulsion of feces, unwanted semi-solid matter produced during digestion, which, depending on the type of animal, may be one or more of: matter which the animal cannot digest, such as bones ; food material after all the nutrients have been extracted, for example cellulose or lignin ; ingested matter which would be toxic if it remained in the digestive tract ; and dead or excess gut bacteria and other endosymbionts.

Its name implies associations dating back to the time of Columba and, although undocumented before the 12th century, it may have served the monks of the Columban family as an ' Iona of the east ' from early times.

Its mass is hard to exactly determine, but may be slightly larger than that of the Sun ( 1. 1 < sub >- 0. 4 </ sub >< sup >+ 0. 6 </ sup > solar mass ).

Its oldest layer, called the Yahwist, may date from the time of Solomon, although many scholars now believe that it should be dated considerably later.

Its lifespan in captivity is around two to three years, although in ideal conditions, this may be extended to five years.

Its main use is in fashion, as opposed to " real " ( fine ) jewelry which may be regarded primarily as collectibles, keepsakes, or investments.

Its origins are complex and may date to the Crusades, later being influenced by French gamblers.

Its consequences may have led to the social isolation which made his life's later years so tragic.

Its imperfections, even within the limited field it covers, may be judged by the aid of Eberhard Nestle's appendix to the 6th issue ( 1880 ).

Its central importance to many biochemical pathways suggests that it was one of the earliest established components of cellular metabolism and may have originated abiogenically.

Its name may be attributed to its frequent role as the first real test in the Elements of the intelligence of the reader and as a bridge to the harder propositions that followed.

Its format is like that of modern travel dictionaries ; i. e., it may have been used by German speakers to communicate with Old Prussians, but the specific circumstances are only speculative.

Its bones have been found as far south as Florida, where it may have occurred during four isolated time periods: around 1000 BC, 1000 AD, the 15th century, and the 17th century.

Its ancestor may have migrated from eastern to northern Africa and then to its current range with the development of the Sahara desert.

Its original name Honovere may mean " high ( river ) bank ", though this is debated ( cf.

" In 1844, his The Ego and Its Own ( Der Einzige and sein Eigentum which may literally be translated as The Unique Individual and His Property ) was published, which is considered to be " a founding text in the tradition of individualist anarchism.

Its 2, 138 pages prompted Playfair to remark that “ The great size of the book, and the obscurity which may justly be objected to many parts of it, have probably prevented it from being received as it deserves .”

Its use was geographically widespread but mail may have been more common at all times.

Its possible that during his younger years, Maroboduus may have served as a prefect of auxiliaries in the Roman Army.

Its earliest organised inhabitants may have had Celtic origins.

Its culinary profiles may seem synonymous with " American food.