Life of James Ferguson, F.R.S.: In a Brief Autobiographical Account, and Further Extended MemoirA. Fullarton, 1867 - 503 頁 |
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第 1 到 5 筆結果,共 19 筆
第 vii 頁
... Pulleys , Wheel and Axle , & c . , 7-10 . 1719. - Wrote an Account of the Lever , the Pulley , the Wheel and Axle , and showed it to a gentleman , who told him that such matters had been long known , 10 , 11 • 1720. In the Service of ...
... Pulleys , Wheel and Axle , & c . , 7-10 . 1719. - Wrote an Account of the Lever , the Pulley , the Wheel and Axle , and showed it to a gentleman , who told him that such matters had been long known , 10 , 11 • 1720. In the Service of ...
第 99 頁
... pulley , introduced for the purpose of showing the mean place of the Moon's apogee in the heavens , and regarding which the reader will find details in the description of the CALCULATOR , under date 1749 . H , and must go round with the ...
... pulley , introduced for the purpose of showing the mean place of the Moon's apogee in the heavens , and regarding which the reader will find details in the description of the CALCULATOR , under date 1749 . H , and must go round with the ...
第 103 頁
... pulley - work of his " Calculator , " which , along with the 146 Instead of " in 183 years or little more , " it should have been , " in 183 years or little less , " as 183 years is equal to 18 years 243 days nearly ; whereas the nodal ...
... pulley - work of his " Calculator , " which , along with the 146 Instead of " in 183 years or little more , " it should have been , " in 183 years or little less , " as 183 years is equal to 18 years 243 days nearly ; whereas the nodal ...
第 104 頁
... pulley is immoveable , and the box may be carried round the ecliptic - plate without in the slightest degree altering its posi- tion . The under part of the large fixed central pulley is grooved at M , and this groove must be sharp at ...
... pulley is immoveable , and the box may be carried round the ecliptic - plate without in the slightest degree altering its posi- tion . The under part of the large fixed central pulley is grooved at M , and this groove must be sharp at ...
第 105 頁
... pulley is actually a combination of three pulleys , but , being in one mass , Ferguson , singularly enough reckons it as one wheel , or rather as one pulley only , and therefore has designated it " the Four - Wheeled Orrery . " Near the ...
... pulley is actually a combination of three pulleys , but , being in one mass , Ferguson , singularly enough reckons it as one wheel , or rather as one pulley only , and therefore has designated it " the Four - Wheeled Orrery . " Near the ...
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常見字詞
24 hours annual appears Astronomy axis Book Calculator called carried centre circle clock comes Common conjunction consequently copy course described diameter died distance divided drawing Earth ecliptic Edinburgh engraving equal Ferguson fixed four fraction frame give given globe goes half hand inches James Ferguson keep known leaves Lectures length letter London lunation machine mean Mechanical mentioned miles minutes months Moon Moon's motion move nearly nodes observed orbit orrery parallelism period pinion plate present produce published pulley ratio refers represents rotation Royal says seconds seen showing shown side Society solar square Street Sun's Tables taken teeth third tion Tracts true turns round Venus weight wheel wheel-work whole wire
熱門章節
第 207 頁 - And he shall confirm the covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the oblation to cease, and for the overspreading of abominations he shall make it desolate, even until the consummation, and that determined shall be poured upon the desolate.
第 208 頁 - Know therefore and understand, that from the going forth of the commandment to restore and to build Jerusalem unto the Messiah the Prince shall be seven weeks, and threescore and two weeks : the street shall be built again, and the wall, even in troublous times.
第 13 頁 - ... length, between my eye and the stars ; sliding the beads upon it till they hid such and such stars from my eye, in order to take their apparent distances from one another; and then, laying the thread down on a paper, I marked the stars thereon by the beads, according to their respective positions, having a candle by me.
第 25 頁 - take a long, thin piece of whalebone ; hold one end of it fast between your finger and thumb, and wind it round your finger; it will then endeavour to unwind itself; and if you fix the other end of it to the inside of a small hoop, and leave it to itself, it will turn the hoop round and round, and wind up a thread tied to the outside of the hoop.
第 167 頁 - Be it remembered, that on the day of in the year of his majesty's reign, and in the year of our Lord...
第 27 頁 - Two large globular stones stood on the top of his gate ; on one of them I painted with oil colours a map of the terrestrial globe, and on the other a map of the celestial...
第 10 頁 - By means of a turning lathe which my father had, and sometimes used, and a little knife, I was enabled to make wheels and other things necessary for my purpose. I then wrote a short account of these machines, and sketched out figures of them with a pen, imagining it to be the first treatise of the kind that ever was written...
第 214 頁 - Astronomy explained upon Sir Isaac Newton's principles, and made easy to those who have not studied Mathematics...
第 26 頁 - ... upon it, and crushed it all to pieces ; which so provoked my father, that he was almost ready to beat the man, and discouraged me so much that I never attempted to make such another machine again, especially as I was thoroughly convinced I could never make one that would be of any real use.
第 60 頁 - In any right-angled triangle, the square which is described upon the side subtending the right angle, is equal to the squares described upon the sides which contain the right angle.