. Encyclopædia britannica; or, A dictionary of arts, sciences, and miscellaneous literature. <? * ^ / K r ./^Uf.^^,.,..//../... ttoye- R O P [ a8i faid, that, irflaying a larger rope, the ftcands aic iwiiUed in a oirection oppofite to that of the the tendency to clofc into a rope is nothing butthe tendency of the ftrands to untwill, it would feemnatural to tu-ill the itrands as the yarns were tuiltcdbefore. This would be true if the elailicity of thefibres in a yarn produced the fame tendency to untwiftin the Itrand that it does in the yarn. But this is notthe cafe. The contr
. Encyclopædia britannica; or, A dictionary of arts, sciences, and miscellaneous literature. <? * ^ / K r ./^Uf.^^,.,..//../... ttoye- R O P [ a8i faid, that, irflaying a larger rope, the ftcands aic iwiiUed in a oirection oppofite to that of the the tendency to clofc into a rope is nothing butthe tendency of the ftrands to untwill, it would feemnatural to tu-ill the itrands as the yarns were tuiltcdbefore. This would be true if the elailicity of thefibres in a yarn produced the fame tendency to untwiftin the Itrand that it does in the yarn. But this is notthe cafe. The contracliou of one of the outer yarnsof a llrand tends to pull the ftrand backward roundihe ;is of the ftrand ; but the contradlion of a fibreof this yam tends to turn the yam round its own axis,and not round the axis of the ftrand. It tends to un-twift the yam, but not to untwift the ftrand. It tendsto untwift the ftrand only fo far as it tends to contraflthe yarn. Let us fuppofe the yarn to be fpun up toone-half the length of tlie fibres. The contraftingpower of this yarn will be only on
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Keywords: ., bookcentury1800, bookdecade1810, booksubjectencyclo, bookyear1810
