綿絲の吸水とそれに伴ふ長さ及び徑の變化

安田 秀明

doi:10.2331/suisan.2.80

綿絲の吸水とそれに伴ふ長さ及び徑の變化

安田秀明

著者情報

ジャーナルフリー

1933 年 2 巻 2 号 p. 80-84

DOI https://doi.org/10.2331/suisan.2.80

詳細

発行日: 1933/07/15 受付日: - J-STAGE公開日: 2008/02/29 受理日: - 早期公開日: - 改訂日: -
訂正情報
訂正日: 2008/02/29 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : In the first experiment, several cords were put in a cage and held in water at a depth of 5-15cm. To set air bubbles free from the cords, the cage were agitated a little while at the beginning. The temperature of water ranged 6-8°C during the experiment. The amount of absorbed water was determined from the increase of weight of the cord, w, and from the decrease of buoyancy upon it. The diameter, 2r, was measured with a micrometer, and the ength under constant loading, l, with a scale.
From the experiment we know that: (1) w-w₀/w₀, l₀-l/l₀ and r-r₀/r₀, where w₀, l₀ and r₀ represent the initial values of w, l and r respectively, vary in a similar way with t, the duration of immersion of the cord in water (Figs. 1, 2 and 3); (2) The relation between w-w₀/w₀ and t follows the formula
w-w₀/w₀=Q₀′(1-e^-a₀t)+Q₁′(1-e^-a₁t)+Q₂′(1-e^-a₂t), Q₀′, Q₁′, Q₂′, α₀, α₁ and α₂ being certain constants. Q₀′, Q₁′ and Q₂′ depend upon r₀, but the ratio, Q₀′:Q₁′:Q₂′ is independent of r₀ α₀, α₁ and α₂ are proportional to r₀^-n, where n<1 for α₀ and n=1 for α₁ and α₂ (Tab. 1, Figs. 4 and 5).
In the second experiment, cords were immersed in coloured water and at intervals the coloured area was observed on a cross section of the cord. Thus we know that: (3) The colour-ing begins to take place on the surface layer of a cord and extends gradually toward the centre of it. The time T, in which the colouring reaches the centre of cord varies with r₀² (Fig. 6).
Right : In the first experiment, several cords were put in a cage and held in water at a depth of 5-15cm. To set air bubbles free from the cords, the cage were agitated a little while at the beginning. The temperature of water ranged 6-8°C during the experiment. The amount of absorbed water was determined from the increase of weight of the cord, w, and from the decrease of buoyancy upon it. The diameter, 2r, was measured with a micrometer, and the ength under constant loading, l, with a scale.
From the experiment we know that: (1) w-w₀/w₀, l₀-l/l₀ and r-r₀/r₀, where w₀, l₀ and r₀ represent the initial values of w, l and r respectively, vary in a similar way with t, the duration of immersion of the cord in water (Figs. 1, 2 and 3); (2) The relation between w-w₀/w₀ and t follows the formula
w-w₀/w₀=Q₀'(1-e^-a₀t)+Q₁'(1-e^-a₁t)+Q₂'(1-e^-a₂t), Q₀', Q₁', Q₂', α₀, α₁ and α₂ being certain constants. Q₀', Q₁' and Q₂' depend upon r₀, but the ratio, Q₀':Q₁':Q₂' is independent of r₀ α₀, α₁ and α₂ are proportional to r₀^-n, where n<1 for α₀ and n=1 for α₁ and α₂ (Tab. 1, Figs. 4 and 5).
In the second experiment, cords were immersed in coloured water and at intervals the coloured area was observed on a cross section of the cord. Thus we know that: (3) The colour-ing begins to take place on the surface layer of a cord and extends gradually toward the centre of it. The time T, in which the colouring reaches the centre of cord varies with r₀² (Fig. 6).

訂正日: 2008/02/29 訂正理由: - 訂正箇所: PDFファイル訂正内容: -

抄録

In the first experiment, several cords were put in a cage and held in water at a depth of 5-15cm. To set air bubbles free from the cords, the cage were agitated a little while at the beginning. The temperature of water ranged 6-8°C during the experiment. The amount of absorbed water was determined from the increase of weight of the cord, w, and from the decrease of buoyancy upon it. The diameter, 2r, was measured with a micrometer, and the ength under constant loading, l, with a scale.
From the experiment we know that: (1) w-w₀/w₀, l₀-l/l₀ and r-r₀/r₀, where w₀, l₀ and r₀ represent the initial values of w, l and r respectively, vary in a similar way with t, the duration of immersion of the cord in water (Figs. 1, 2 and 3); (2) The relation between w-w₀/w₀ and t follows the formula
w-w₀/w₀=Q₀'(1-e^-a₀t)+Q₁'(1-e^-a₁t)+Q₂'(1-e^-a₂t), Q₀', Q₁', Q₂', α₀, α₁ and α₂ being certain constants. Q₀', Q₁' and Q₂' depend upon r₀, but the ratio, Q₀':Q₁':Q₂' is independent of r₀ α₀, α₁ and α₂ are proportional to r₀^-n, where n<1 for α₀ and n=1 for α₁ and α₂ (Tab. 1, Figs. 4 and 5).
In the second experiment, cords were immersed in coloured water and at intervals the coloured area was observed on a cross section of the cord. Thus we know that: (3) The colour-ing begins to take place on the surface layer of a cord and extends gradually toward the centre of it. The time T, in which the colouring reaches the centre of cord varies with r₀² (Fig. 6).

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