It may also be defined as the sine of the angle of incidence divided by the sine of the angle of refraction, as light passes from air into the substance. A Treatise on Optics - Page 22by David Brewster, Alexander Dallas Bache - 1833 - 95 pagesFull view - About this book
| John Henry Pepper - 1869 - 722 pages
...but since BAF is known, the angle of refraction BRN is also known ; and the angle of incidence HRB **being found by the preceding methods, we may determine...incidence divided by the sine of the angle of refraction.** By this method we may readily measure the refractive power of all bodies. If the body be solid, it... | |
| John Tyndall - 1870 - 110 pages
...the line np will be the sine of the angle of refraction. 117. Hence the all-important optical law — **The sine of the angle of incidence divided by the sine of the angle of refraction** is a constant quantity. However these angles may vary in size, this bond of relationship is never severed.... | |
| John Tyndall - 1870 - 92 pages
...the line np will be the sine of the angle of refraction. 117. Hence the all-important optical law — **The sine, of the angle of incidence divided by the sine of the angle of refraction** is a constant quantity. However these angles may vary in size, this bond of relationship is never severed.... | |
| JOHN TYNDALL, L.L.D., F.R.S. - 1871 - 204 pages
...line np will be the sine of the angle of refraction. 117. Hence the/ill-important optical law—The **sine of the angle of incidence divided by the sine of the angle of refraction** is a constant quantity. However these angles may vary in size, this bond of relationship is never severed.... | |
| John Tyndall - 1874 - 216 pages
...the line np will be the sine of the angle of refraction. 117. Hence the ill-important optical law — **The sine of the angle of incidence divided by the sine of the angle of refraction** is a constant quantity. However these angles may vary in size, this bond of relationship is never severed.... | |
| Christopher Smith Fenner - 1875 - 360 pages
...sine of the angle of incidence, while np will be the sine of the angle of refraction ; hence, the law. **The sine of the angle of incidence, divided by the sine of the angle of refraction,** is a constant quantity, which quantity invariably determines the index of refraction. Rays passing... | |
| Joseph Zentmayer - 1876 - 23 pages
...divide o'm' by n'p', we will have in both cases the same quotient, or, as it is generally expressed : **the sine of the angle of incidence divided by the sine of the angle of refraction** is a constant, whatever the angle of incidence may be. This constant quotient is called the index of... | |
| John Henry Pepper - 1877 - 766 pages
...but since BAF is known, the angle of refraction BRN is also known ; and the angle of incidence HRB **being found by the preceding methods, we may determine...incidence divided by the sine of the angle of refraction.** By this method we may readily measure the refractive power of all bodies. If the body be solid, it... | |
| Josiah Parsons Cooke (Jr.) - 1881 - 648 pages
...refraction, we readily deduce another value for the index of refraction ; and it is usually denned as **the sine of the angle of incidence divided by the sine of the angle of refraction.** Moreover, according to the well-known law of refraction, not only is this ratio constant for any incidence,... | |
| Alfonzo Gardiner - 1881 - 214 pages
...The sine of the angle of incidence bean a fixed proportion to the sine of the angle of refraction; or **the sine of the angle of incidence, divided by the sine of the angle of refraction,** is (for the same two media) always a constant quantity (ie, the same number^, which is called the "... | |
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