A Text book of Physics volume 1 2
A Text book of Physics volume 1 2
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In our eReader you can find the full English version of the book. Read A Text book of Physics volume 1 2 Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Text book of Physics volume 1 2
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Laics. When light reaches the surface between two transparent media, part of the beam may be reflected, but part may pass into the second medium, and its direction will usually be altered. This is generally expressed by saying that the beam has been bent or refracted. If a stick is partly immersed in water and viewed from the side it will appear bent because the light from the lower end of the stick is bent in crossing the surface of the water (Fig. 38). In ' Fig. 39 a section of the stick and ...water taken at N Fig. 38. Fig. 39. Right angles to Fig. 38 is shown. The stick, which is really at S, appears to be at S'. A ray coming to an eye at E must there- fore have been bent downwards in coming through the boundary water-air, and must have taken the course SPE. If the normal NPM is drawn, the angle SPN is called the angle of incidence and the angle EPM is the angle of refraction. The first law of refraction is that the angles of incidence and refraction lie in one plane, the second law was found by Snell and states that the sine of the angle of incidence is always the same multiple of the sine of the angle of refraction and that this multiple is a characteristic of a boundary.
What to read after A Text book of Physics volume 1 2?
You can find similar books in the "Read Also" column, or choose other free books by H E Harold Edwin Hurst to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Laics. When light reaches the surface between two transparent media, part of the beam may be reflected, but part may pass into the second medium, and its direction will usually be altered. This is generally expressed by saying that the beam has been bent or refracted. If a stick is partly immersed in water and viewed from the side it will appear bent because the light from the lower end of the stick is bent in crossing the surface of the water (Fig. 38). In ' Fig. 39 a section of the stick and ...water taken at N Fig. 38. Fig. 39. Right angles to Fig. 38 is shown. The stick, which is really at S, appears to be at S'. A ray coming to an eye at E must there- fore have been bent downwards in coming through the boundary water-air, and must have taken the course SPE. If the normal NPM is drawn, the angle SPN is called the angle of incidence and the angle EPM is the angle of refraction. The first law of refraction is that the angles of incidence and refraction lie in one plane, the second law was found by Snell and states that the sine of the angle of incidence is always the same multiple of the sine of the angle of refraction and that this multiple is a characteristic of a boundary.
What to read after A Text book of Physics volume 1 2?
You can find similar books in the "Read Also" column, or choose other free books by H E Harold Edwin Hurst to read onlineMoreLess
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