 | Sir John Frederick William Herschel - 1833 - 444 pages
...With the instruments now employed in observatories, a single second, or the 60th part of a minute, is rendered a distinctly visible and appreciable quantity....200,000th part of the radius, so that on a circle of (5 feet in diameter it would occupy no greater linear extent than -g^^th part of an inch ; a quantity... | |
 | sir John Frederick W. Herschel (1st bart.) - 1833 - 500 pages
...With the instruments now employed in observatories, a single second, or the 60th part of a minute, is rendered a distinctly visible and appreciable quantity....200,000th part of the radius, so that on a circle of 6 feet in diameter it would occupy BO greater linear extent than -, -^'Tl j, th part of an inch ; a... | |
 | T. H. Croft MOODY - 1838 - 344 pages
...With the instruments now employed in observatories, a single second, or the 60th part of a minute, is rendered a distinctly visible and appreciable quantity....200,000th part of the radius, so that on a circle of 6 feet in diameter, it would occupy no greater linear extent than 1 -5,700th part of an inch ; a quantity... | |
 | T. H. Moody - 1838 - 324 pages
...With the instruments now employed in observatories, a single second, or the 60ih part of a minute, is rendered a distinctly visible and appreciable quantity....200,000th part of the radius, so that on a circle of 6 feet in diameter, it would occupy no greater linear extent than 1 -5,700th part of an inch ; a quantity... | |
 | John Frederick William Herschel - 1849 - 672 pages
...With the instruments now employed in observatories, a single second, or the 60th part of a minute, is rendered a distinctly visible and appreciable quantity....200,000th part of the radius, so that on a circle of 6 feet in diameter it would occupy no greater linear extent than part of an inch ; a quantity requiring... | |
 | 1850 - 626 pages
...angle. With the instruments now employed in observatories, a single second, or a 6Oth part of a minute, is rendered a distinctly visible and appreciable quantity....200,000th part of the radius, so that on a circle of 6 feet in diameter it would occupy no greater linear extent than a; ' a6 part of an inch ; a quantity... | |
 | John Frederick William Herschel - 1851 - 744 pages
...observatories, a single second, or the 60th part of a minute, is rendered a distinctly visible and appretiable quantity. Now, the arc of a circle, subtended by one...200,000th part of the radius, so that on a circle of 6 feet iu diameter it would occupy no greater linear extent than ^r^th part of an inch ; a quantity... | |
 | Henry Barnard - 1856 - 768 pages
...rendered a distinctly visible and appreciable quantity. " They are of a circle," says Sir J. Herschell, " subtended by one second, is less than the 200,000th...diameter, it would occupy no greater linear extent than 1-5700 part of an inch, a quantity requiring a powerful microscope to be discerned at all."* The largest... | |
 | William Somerville Orr - 1856 - 622 pages
...observatories, a single second, or the 60th part of a minute, is rendered a distinctly visible nnd appreciable quantity. Now the arc of a circle, subtended by one second, is less than the 2CO, 000th part of the radius ; so that on a circle of six feet in diameter it would occupy no greater... | |
 | 1861 - 712 pages
...The arc of a circle," says Sir John Herschell, " subtended by one second, is less than the 200, 000th part of the radius, so that on a circle of six feet...diameter, it would occupy no greater linear extent than 1-5700 part of an inch, a quantity requiring a powerful microscope to be discerned at all." The largest... | |
| |
Now, the arc of a circle, subtended by one second, is less than the 200,000th part of the radius, so that on a circle of 6 feet in diameter it would occupy no greater linear extent than part of an inch ; a quantity requiring a powerful microscope to be... 
