 ... established by which the ratio between emergent beam and focal length, could be conveniently denoted. It would not be possible for me to condense, without a sacrifice of intelligibility, the steps by which he subsequently showed, in a very beautiful...  Journal of the Royal Microscopical Society - Halaman 55oleh Royal Microscopical Society (Great Britain) - 1878Tampilan utuh - Tentang buku ini
 | Lionel Smith Beale - 1880 - 770 halaman
...and having com* Briefly stated, "numerical aperture" is equal to the product of the refractive iiulex of the medium in front of the objective, multiplied...and Helmholtz deduced the limit of visibility. The angle of the oil-immersion lens described by Mr. Stephenson 2 K 2 ponent lenses throughout the combination,... | |
 | Lionel Smith Beale - 1880 - 742 halaman
..." 4. Its power is rather more than one-ninth, and having com* Briefly stated, "numerical aperture " is equal to the product of the refractive index of...objective, multiplied into the sine of the semi-angular aperture=n sin. w. This definition of "numerical aperture" offers at once a means by which all objectives,... | |
 | Lionel Smith Beale - 1880 - 736 halaman
...°n" 4. Its power is rather more than one-ninth, and having com* Briefly stated, "numerical aperture" is equal to the product of the refractive index of...front of the objective, multiplied into the sine of Hie semi-angular aperture=n sin. w. This definition of "numerical aperture" offers at once a means... | |
 | 1882 - 262 halaman
...he subsequently showed, in a very beautiful manner, that the ratio in question can be expressed by the product of the refractive index of the medium in front of the objective, and the sine of half the angle of aperture, that is, by я sin. и. Taking for our unit the capacity... | |
 | 1882 - 998 halaman
...he subsequently showed, in a very beautiful manner, that the ratio in question can be expressed by the product of the refractive index of the medium in front of the objective, and the sine of half the angle of aperture, that is by » sin «. Taking for our unit the capacity... | |
 | Royal Microscopical Society (Great Britain) - 1882 - 530 halaman
...he subsequently showed, in a very beautiful manner, that the ratio in question can be expressed by the product of the refractive index of the medium in front of the objective, and the sine of half the angle of aperture, that is by n sin u. Taking for our unit the capacity of... | |
 | John H. Moore, Nicholas D. Spencer - 2001 - 1178 halaman
...is identical to the numerical aperture A^ of the objective lens. The numerical aperture of a lens is the product of the refractive index of the medium in front of the objective and of the sine of half of the angle whose vertex is located on the optical axis and being the starting... | |
 | Kshudiram Saha - 2008 - 374 halaman
...product of refractive index of the medium of the incident ray and the sine of the angle of incidence is equal to the product of the refractive index of the medium of the refracted ray and the sine of the angle of refraction. In other words, nw sin 9W = na sin 9a,... | |
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