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Glass disease, also referred to as sick glass or glass illness, is a degradation process of glass that can result in weeping, crizzling, spalling, cracking and fragmentation. [ 1 ] [ 2 ] Glass disease is caused by an inherent instability in the chemical composition of the original glass formula. [ 3 ]
Problem 12: A certain father died and left as an inheritance to his three sons 30 glass flasks, of which 10 were full of oil, another 10 were half full, while another 10 were empty. Divide the oil and flasks so that an equal share of the commodities should equally come down to the three sons, both of oil and glass; [ 2 ] , p. 109.
Salix babylonica (Babylon willow or weeping willow; Chinese: 垂柳; pinyin: chuí liǔ) is a species of willow native to dry areas of northern China, Korea, Mongolia, Japan, and Siberia but cultivated for millennia elsewhere in Asia, being traded along the Silk Road to southwest Asia and Europe.
Episcia is a genus of flowering plants in the African violet family, Gesneriaceae. The ten species it contains are native to the tropical regions of Central and South America . The species are perennial herbaceous plants characterized by a stoloniferous habit, red (rarely orange, pink, blue or yellow) flowers, and frequently have marked or ...
The compact arrangement of 5–40 mm (1 ⁄ 4 – 1 + 5 ⁄ 8 in) round-ovate blunt-tipped leaves, edges generally crenulate, on 5–70 mm (1 ⁄ 4 – 2 + 3 ⁄ 4 in) stalks, and violet flowers are characteristic of the species. This is a hairy, compact plant growing from a small rhizome system. The leaves are spade- or heart-shaped, sometimes ...
They can be recognized by their star-like appearance due to the separated petals or their deep violet-blue spurs. [3] [9] Pollination can occur via insects, self-pollination, or cross-pollination. [4] Its seeds have rather thick cotyledons to nourish the embryo, and the fruits that develop around them usually have 3 lobes. [1]
Viola renifolia is a species of violet known by the common names white violet and kidneyleaf violet. It is native to northern North America, where it has a widespread distribution across Canada and the northern United States as far south as Washington, Colorado, and New York. [1] Kidneyleaf violet is a perennial herb growing up to 10 ...
Viola sororia (/ v aɪ ˈ oʊ l ə s ə ˈ r ɔːr i ə / vy-OH-lə sə-ROR-ee-ə), [5] known commonly as the common blue violet, is a short-stemmed herbaceous perennial plant native to eastern North America. It is known by a number of common names, including common meadow violet, purple violet, woolly blue violet, hooded violet, and wood ...