De quo nivo nives melius efficiuntur
De qua nivo nives optimum sunt: physica et meteorologia idealis munitionis Qualitas nivi — non quaestio fortunae, sed directum effectum coacervi meteorologici, determinantis physico-mechanica proprietates nivique stratuum. Creatio optimi munitionis nivis necessitat intellectum statui phaseae aquae in massa nivique, structura crystallina et processibus, quae in compressione mechanicâ occurunt. 1. Parametres claves: temperatura et umiditas Duo principes factores, determinantes "viscositatem" nivi, sunt temperatura aëris et contentus liquidæ aquæ in eâ. Interactio eorum describitur conceptu equivalenti nivique aquæ (SWE) et gradibus metamorphismi nivi. Nivus optimus ("munitionis" vel "imbricandi"): Formatur in temperaturis proximis ad 0°C (a -2°C usque ad +0.5°C), et alta umiditate relativa aëris. In his conditionibus pars nivorum est in margine fundendi. In compressione: Acuti excrescences crystallorum subfunduntur a pressione et calore palmarum. Formata tenuis pellicula aquæ operatur sicut colla naturalis. In subsequenti congelatione (jam in volatu vel in proiectu) iste "colla" crystallizatur, cohaerentem nivique com. Ita nivus iste plasticus, viscosus, format nives densas, monoliticas et gravissimas, capaces longe volare et "significandum" laedere. Nivus frigidus, siccus (infra -10°C): Compositus est ex solidis, fragilibus crystallis minimis quantitatis aquæ non congelatae. In compressione crystalli non funduntur, sed rumpuntur et frangentur. Potentiae frictionis et sцепtionis mechanicæ inter fragmenta insufficiunt pro formatione solidi comi. Resultat nivus ramosus, fragilis, qui in manu vel in volatu diseruptat. eius albedo (reflectivitas) maximus, quod visuallis facit eum very album, sed in re utilitatis in ludis nullum. Nivus humidus, "gravis" (temperatura circa 0°C, amensio): Continet superabundantem liquidam aquam (plurum 10-15% secundum massam). In formando se facillime formatur, sed non est nivus, sed comus glaciei. Eiusdem gravissimus, non volatilis, ... Read more
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Full version: https://elibrary.org.uk/m/articles/view/De-quo-nivo-nives-melius-efficiuntur
Vietnam Online · 16 days ago 0 20
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Hanoi, Vietnam
06.01.2026 (16 days ago)
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