 | 1834 - 578 ページ
...important discovery of Willebrord Snell, that when a ray of light passes from one medium to another, the sine of the angle of incidence bears a constant ratio to the sine of the angle of the refraction, enabled Cassini to construct tables on a more scientific principle than had hitherto... | |
 | 1834 - 574 ページ
...important discovery of Willebrord Snell, that when a ray of light passes from one medium to another, the sine of the angle of incidence bears a constant ratio to the sine of the angle of the refraction, enabled Cassini to construct tables on a more scientific principle than had hitherto... | |
 | Society for the diffusion of useful knowledge - 1839 - 380 ページ
...vessel. Here the change is abrupt, but in the atmospheric refraction it is exceedingly gradual. 113. The sine of the angle of incidence bears a constant ratio to the sine of the angle of refraction for the same medium. The angle of incidence is the angle which the incident ray makes with... | |
 | Dionysius Lardner - 1846 - 664 ページ
...this refraction is also proved to be subject to the same laws as the refraction of luminous rays. Thus the sine of the angle of incidence bears a constant ratio to the sine of the angle of refraction, when the refracting medium is given, and refracting media of different kinds refract these... | |
 | James Dwight Dana - 1850 - 800 ページ
...there is no refraction. But AB is the sine of the angle AEB, which is the angle of incidence, and CD is the sine of the angle CED, which is the angle of refraction....the index of refraction. In water, the ratio is as Г335 to 1. Г335 is therefore the index of refraction of water. 216. The following are the indices... | |
 | Johann Georg Heck - 1851 - 712 ページ
...themselves : — 1st. The plane of refraction coincides with the plane of incidence. 2d. For the same media, the sine of the angle of incidence bears a constant ratio to the sine of the angle of refraction. Suppose in pi. 21, fig. 25, / to be a ray of light, incident at the same point as, and... | |
 | 1851 - 716 ページ
...themselves : — 1st. The plane of refraction coincides with the plane of incidence. 2d. For the same media, the sine of the angle of incidence bears a constant ratio to the sine of the angle of refraction. Suppose in pi. 21, Jig. 25, I to be a ray of light, incident at the same point as, and... | |
 | Bartholomew Price - 1852 - 582 ページ
...SPN = p sinrr», where p is constant for the same media, but varies for different media ; that is, the sine of the angle of incidence bears a constant ratio to the sine of the angle of refraction. The envelope of all the refracted rays is called the caustic by refraction of the given... | |
 | James Dwight Dana - 1854 - 864 ページ
...there is no refraction. But AB is the sine of the angle AEB, which is the angle of incidence, and CD is the sine of the angle CED, which is the angle of refraction....bears a constant ratio to the sine of the angle of refraction. Tim ratio is termed the index of refraction. In water, the ratio is as 1-335 to 1. 1-335... | |
 | James Dwight Dana - 1854 - 858 ページ
...This principle may therefore be thus stated : The sine of the angle of incidence Recurs a constcmt ratio to the sine of the angle of refraction. This...the index of refraction. In water, the ratio is as 1-335 to 1. 1-335 is therefore the index of refraction of water. The following are the indices of refraction... | |
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Rubicon on a certain occasion, and it is a contingent general truth that the sine of the angle of incidence bears a constant ratio to the sine... 
