 When a ray of light passes from a rarer into a denser medium, it is bent towards the perpendicular, and from a denser into a rarer from the perpendicular, which is by no means generally true.  Optics - Pagina 67de Dionysius Lardner - 1856Vizualizare completă - Despre această carte
 | 1819 - 654 pagini
...treated of in the following order. — 1. Refraction. It is a well known law of Optics, that when ft ray of light passes from a rarer into a denser medium, it is bent, or refracted, towards the denser. I lence the apparent place of a star will be changed : Being seen... | |
 | Jeremiah Joyce - 1824 - 224 pagini
...is meant by refraction ? Explain this by Fig. 2. When does refraction take place ? What is the rule when a ray of light passes from a rarer into a denser medium ? What is the rule when it passes from a denser into a rarer medium ? What experiment is exhibited... | |
 | Robert Hare - 1828 - 418 pagini
...from which that point may be seen. 88.—REFRACTION OF LIGHT. When a ray of light passes obliquely, from a rarer into a denser medium, it is bent towards the perpendicular direction. When the course of the oblique ray is from the denser medium, into one which is rarer, it... | |
 | John Lee Comstock - 1832 - 362 pagini
...to the eye in a different Explain the method of using this instrument—What is meant by refraction ?—When a ray of light passes from a rarer into a denser medium, how is it refracted ?—What is a medium ?~—Which way is a ray of light refracted when it passes... | |
 | John Lee Comstock - 1832 - 364 pagini
...eye in a different Explain the method of using this instrument — What is meant by refraction? — When a ray of light passes from a rarer into a denser medium, how is it refracted ? — What is a medium ? — Which way is a ray of light refracted when it passes... | |
 | John Lee Comstock - 1838 - 266 pagini
...refracting light ? Do all substances refract alike, or have they different powers in this respect ? When a ray of light passes from a rarer into a denser medium, in what direction is it refracted ? be refracted towards the perpendicular, because glass is more dense... | |
 | 1848 - 788 pagini
...sir, the inquirer states, that is very well; but how will you do this ? The optician answers, Since when a ray of light passes from a rarer into a denser medium, it is bent towards a perpendicular line, it is evident, that if I can contrive a body, which, being transparent has, at... | |
 | Henry Hunt Snelling - 1849 - 174 pagini
...from it, either towards the right or left, and this bending is called refraction ; (see jig. 3, 6.) If a ray of light passes from a rarer into a denser medium it is refracted towards a perpendicular in that medium ; but if it passes from a denser into rarer it is... | |
 | James M'Intire - 1850 - 352 pagini
...OF REFRACTION. It is also according to an established principle in Optics, that the more obliquely a ray of light passes from a rarer into a denser medium, the greater is the refraction ; hence the refraction of the heavenly bodies is greatest when they are... | |
 | Dionysius Lardner - 1851 - 804 pagini
...bent, towards perpendicular in entering a denser medium. — This result being too hastily generalized, is sometimes announced as follows : — When a ray of light passes from a __ rarer into a denser medium, it is bent towards the perpendicular, and from a denser into a rarer... | |
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