A Wisdom Archive on gel

A consomme is made by adding a mixture of ground meats or mousselin with Mirepoix (a mixture of vegetables traditionally used in French cuisine to flavour soups and sauces), tomatoes, and egg whites into either bouillon, or stock. This is then slowly brought to a simmer, and carefully simmered until the desired product is reached. The act of simmering brings impurities to the surface of the liquid, which are further drawn out due to the presence of acid from the tomatoes. eventually, all the solids will form a 'raft' at the surface of the li ...

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Besides the gemstone varieties that show a play of color, there are other kinds of common opal such as the milk opal, milky bluish to greenish; resin opal, honey-yellow with a resinous lustre; wood opal, caused by the replacement of the organic material in wood with opal; menilite brown or grey; hyalite, a colorless glass-clear opal sometimes called Muller's Glass; geyserite, (siliceous sinter) deposited around hot springs or geysers; and diatomite or diatomaceous earth, the accu ...

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Shaving can be done with an electric razor or a manual razor. If a non-electric razor is used, some lathering or lubricating agent such as shaving cream, soap, gel, foam or shaving oil is normally applied to the area to be shaved first, to avoid a painful razor burn. These lubricate the area to be shaved, moisturize the skin, and lift, soften and swell the hairs so that after they dry, the ends may even recede below the skin surface. Manual razors are available in many different styles: disposable, disposable cartridge, straight razor, and safety. Some forms of women's razors have no blade at all, and use ch ...

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There are a variety of tasks for which aerogels are used. Commercially, aerogels have been used in granular form to add insulation to skylights. After several trips on the Vomit Comet, one research team has shown that producing aerogel in a weightless environment can produce more uniform size of the particles, and reduce this Rayleigh scattering effect in silica aerogel, thus making the aerogel less blue and more transparent. Transparent silica aerogel would be very suitable as a thermal insulation material for windows, significantly limit ...

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Chemically, it is a linear copolymer with homopolymeric blocks of (1-4)-linked ß-D-mannuronate (M) and its C-5 epimer α-L-guluronate (G) residues, respectively, covalently linked together in different sequences or blocks. The monomers can appear in homopolymeric blocks of consecutive G-residues (G-blocks), consecutive M-residues (M-blocks), alternating M and G-residues (MG-blocks) or randomly organized blocks. The relative amount of each block type varies both with the origin of the alginate. Alternating blocks form the most flexibl ...

Read more here: » Alginic acid: Encyclopedia II - Alginic acid - Structure

At the time of his alleged abduction, Antonio Villas Boas was a 23-year-old Brazillian farmer. In the early hours of 16 October, 1957, he was ploughing fields near Sāo Francisco de Sales when he saw what he described as a red "star" in the night sky. According to his story, this "star" approached his position, growing in size until it became recognisable as a roughly circular- or egg-shaped craft, with a red light at its front and a rotating cupola on top. The craft began decending to land in the field, extending three "legs" as it did so ...

Read more here: » Antonio Villas Boas Case: Encyclopedia II - Antonio Villas Boas Case - History

Aerogel is composed of 99.8% air with a typical density of 3 mg/cm3. It feels like hard foam. Pressing softly won't leave any mark; pressing harder will leave a permanent dimple. Pressing hard enough will cause a catastrophic breakdown in the sparse structure causing it to shatter like glass (known as friability). Despite the fact that it is prone to shattering, it is very strong structurally, able to hold over 2000 times its own weight. Its impressive load bearing abilities are due to the dendritic microstructure, with spherical ...

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As well as occurring naturally, opals of all varieties have been synthesized experimentally and commercially. The resulting material is distinguishable from natural opal by its regularity; under magnification, the patches of colour are seen to be arranged in a "lizard skin" or "chicken wire" pattern. Synthetics are further distinguished from naturals by the former's lack of fluorescence under UV light. Synthetics are also generally lower in density and are often highly por ...

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About 95% of the world's opal comes from Australia. In particular, the town of Coober Pedy in South Australia is a major source. Common, water, jelly, and fire opal are found mostly in Mexico and Mesoamerica. Another Australian town, Lightning Ridge in New South Wales, is the main source of black opal, opal containing a predominantly dark background (dark-gray to blue-black displaying the play of color). Boulder opal h ...

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