the most widely used oor Kornies
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Yma seyth flogh dhis.langbot langbot
One of the most widely-used Cornish language text books. Covering grades 1 and 2, with a conversational approach it introduces the various basic topics in the context of their use and there are plenty of illustrations to reinforce the text. By the end of the book, the student is capable of basic but varied conversation in Cornish. A CD is available to accompany the book.
Res yw dhywgh hwi mos dhe’n skol.langbot langbot
Neodymium is a chemical element with the symbol Nd and atomic number 60. It is the fourth member of the lanthanide series and is considered to be one of the rare-earth metals. It is a hard, slightly malleable, silvery metal that quickly tarnishes in air and moisture. When oxidized, neodymium reacts quickly to produce pink, purple/blue and yellow compounds in the +2, +3 and +4 oxidation states.[5] It is generally regarded as having one of the most complex spectra of the elements.[6] Neodymium was discovered in 1885 by the Austrian chemist Carl Auer von Welsbach, who also discovered praseodymium. It is present in significant quantities in the minerals monazite and bastnäsite. Neodymium is not found naturally in metallic form or unmixed with other lanthanides, and it is usually refined for general use. Neodymium is fairly common—about as common as cobalt, nickel, or copper—and is widely distributed in the Earth's crust.[7] Most of the world's commercial neodymium is mined in China, as with many other rare-earth metals. Neodymium compounds were first commercially used as glass dyes in 1927 and remain a popular additive. The color of neodymium compounds comes from the Nd3+ ion and is often a reddish-purple, but changes with the type of lighting, because of the interaction of the sharp light absorption bands of neodymium with ambient light enriched with the sharp visible emission bands of mercury, trivalent europium or terbium. Neodymium-doped glasses are used in lasers that emit infrared with wavelengths between 1047 and 1062 nanometers. These lasers have been used in extremely high-power applications, such as experiments in inertial confinement fusion. Neodymium is also used with various other substrate crystals, such as yttrium aluminium garnet in the Nd:YAG laser.
Yma hi ow tos!langbot langbot
Caesium (IUPAC spelling[6]) (or cesium in American English)[note 1] is a chemical element with the symbol Cs and atomic number 55. It is a soft, silvery-golden alkali metal with a melting point of 28.5 °C (83.3 °F), which makes it one of only five elemental metals that are liquid at or near room temperature.[note 2] Caesium has physical and chemical properties similar to those of rubidium and potassium. The most reactive of all metals, it is pyrophoric and reacts with water even at −116 °C (−177 °F). It is the least electronegative element, with a value of 0.79 on the Pauling scale. It has only one stable isotope, caesium-133. Caesium is mined mostly from pollucite, while the radioisotopes, especially caesium-137, a fission product, are extracted from waste produced by nuclear reactors. The German chemist Robert Bunsen and physicist Gustav Kirchhoff discovered caesium in 1860 by the newly developed method of flame spectroscopy. The first small-scale applications for caesium were as a "getter" in vacuum tubes and in photoelectric cells. In 1967, acting on Einstein's proof that the speed of light is the most constant dimension in the universe, the International System of Units used two specific wave counts from an emission spectrum of caesium-133 to co-define the second and the metre. Since then, caesium has been widely used in highly accurate atomic clocks. Since the 1990s, the largest application of the element has been as caesium formate for drilling fluids, but it has a range of applications in the production of electricity, in electronics, and in chemistry. The radioactive isotope caesium-137 has a half-life of about 30 years and is used in medical applications, industrial gauges, and hydrology. Nonradioactive caesium compounds are only mildly toxic, but the pure metal's tendency to react explosively with water means that caesium is considered a hazardous material, and the radioisotopes present a significant health and ecological hazard in the environment.
An re ma yw ow fluvennow blomm.langbot langbot
In 1825 almost all of this screen was taken down. Some of the pieces were thrown into the tower, others were stored in a chest in the vestry. The original pieces from the centre section were gradually replaced between 1880 and 1909 and rededicated by the Bishop of St German’s on 7th January 1910. The Northern end, on the left, was restored in 1922 as a memorial to those from the parish who died in the first World War. The Lady Chapel section, on the right, was restored a few years later by Belgian refugees and has two completely new bays and one odd panel of original dado. The original red, blue, and green paint and gilding to the original medieval parts can be easily seen. The blue colouring is a particularly rare azurite blue paint. Azurite was widely used in medieval painting. However, it cannot be mixed with oil like other pigments, so was mixed in a water-soluble glue medium. This has been destroyed in many other screens by washing with water or linseed oil. The carving across the top is the most exceptional feature of the Screen. The upper row consists of knotted vines and the lower row of fantastic beasts amongst twining foliage. There are black stags with golden antlers, spotted green serpents devouring unhappy little beasts, greedy black demons stuffing their red mouths with blue-and-gold striped birds, more gold birds pecking at fruit, and sometimes demon faces stalking them through the foliage. There is a great white hound with a gold collar and two smaller black ones pulling down a black deer with golden antlers, followed by a hunter slipping a hound from the leash, a speckled unicorn fighting with a winged dragon, and innumerable other strange fauna tightly entwined together across the entire width of the church.
Ty a boon.langbot langbot
Tin is a chemical element with the symbol Sn (from Latin: stannum) and atomic number 50. Tin is a silvery-colored metal. Tin is soft enough to be cut with little force[7] and a bar of tin can be bent by hand with little effort. When bent, the so-called “tin cry” can be heard as a result of twinning in tin crystals;[8] this trait is shared by indium, cadmium, zinc, and mercury in the solid state. Pure tin after solidifying presents a mirror-like appearance similar to most metals. In most tin alloys (such as pewter) the metal solidifies with a dull gray color. Tin is a post-transition metal in group 14 of the periodic table of elements. It is obtained chiefly from the mineral cassiterite, which contains stannic oxide, SnO 2. Tin shows a chemical similarity to both of its neighbors in group 14, germanium and lead, and has two main oxidation states, +2 and the slightly more stable +4. Tin is the 49th most abundant element on Earth and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table, thanks to its magic number of protons. It has two main allotropes: at room temperature, the stable allotrope is β-tin, a silvery-white, malleable metal; at low temperatures it is less dense grey α-tin, which has the diamond cubic structure. Metallic tin does not easily oxidize in air and water. The first tin alloy used on a large scale was bronze, made of 1⁄8 tin and 7⁄8 copper, from as early as 3000 BC. After 600 BC, pure metallic tin was produced. Pewter, which is an alloy of 85–90% tin with the remainder commonly consisting of copper, antimony, bismuth, and sometimes lead and silver, has been used for flatware since the Bronze Age. In modern times, tin is used in many alloys, most notably tin / lead soft solders, which are typically 60% or more tin, and in the manufacture of transparent, electrically conducting films of indium tin oxide in optoelectronic applications. Another large application is corrosion-resistant tin plating of steel. Because of the low toxicity of inorganic tin, tin-plated steel is widely used for food packaging as tin cans. Some organotin compounds can be extremely toxic.
Na redyewgh y’n stevel-ma.langbot langbot
7 sinne gevind in 6 ms. Hulle kom uit baie bronne en word nie nagegaan nie.