 | James Mitchell - 1823 - 666 pagina’s
...operation of refraction in incurvating the rays of light proceeding from objects near the horizon is very considerable, it can by no means be neglected,...true and apparent level is estimated at considerable distances. It is now ascertained that, for horizontal refractions, the radius of curvature of the curve... | |
 | Alexander Jamieson - 1829 - 654 pagina’s
...the operation of refraction incurvating the rays of light proceeding from objects near the horizon is considerable, it can by no means be neglected, when...true and apparent level is estimated at considerable distances. It is now ascertained, that for horizontal refractions the radius of curvature of the curve... | |
 | Luke Hebert - 1835 - 938 pagina’s
...the operation of refraction incurvating the rays of light proceeding from objects near the horizon is considerable, it can by no means be neglected, when...true and apparent level is estimated at considerable dislances. It is now ascertained, that for horizontal refractions the radius of curvature of the curve... | |
 | Luke Hebert - 1836 - 942 pagina’s
...the operation of retraction incurvating the rays of light proceeding from objects near the horizon is considerable, it can by no means be neglected, when...true and apparent level is estimated at considerable distances. It is now ascertained, that for horizontal refractions the radius of curvature of the curve... | |
 | Edward Henry Knight - 1876 - 996 pagina’s
...operation of refraction, in curving the rays of light proceeding from objects near the horizon, is considerable, it can by no means be neglected when the difference between the true and apparent elevation is estimated at considerable distances. It is now ascertained that, for horizontal refractions,... | |
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But as the operation of retraction incurvating the rays of light proceeding from objects near the horizon is considerable, it can by no means be neglected, when the difference between the true and apparent level is estimated at considerable distances.... 