Popular Anatomy And Physiology Adapted to the Use of Students And General Read
Popular Anatomy And Physiology Adapted to the Use of Students And General Read
T S Thomas Scott Lambert
The book Popular Anatomy And Physiology Adapted to the Use of Students And General Read was written by author T S Thomas Scott Lambert Here you can read free online of Popular Anatomy And Physiology Adapted to the Use of Students And General Read book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Popular Anatomy And Physiology Adapted to the Use of Students And General Read a good or bad book?
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492. Jt will be proper in conclusion, to speak briefly of images, opti- cal instruments such as telescopes, microscopes, &c. All mention of 8* 178 ORGANS OF SENSATION OR FEELING. [CHAP. II. them has been purposely avoided, because much confusion is produced in the mind by the introduction of the indefinite term images, in lan- guage generally used where these subjects are treated upon, and so far as I can judge, the mind of the learner finds it difficult to conceive of an image of a dart in the... eye when one is represented there in a draw- ing. There is nothing like the dart in the eye. The dart is that wh'ch acts upon the light, while the image is the light itself. To illustrate. If light be coming from a thousand different points of an object, it will arrive in the eye at a thousand different points or foci. These bear the same relative distance from each other as the points of the object f. Om which the light has come, as seen in Lith PI 5, Fig. 2. That is, if it be as great a distance from the first point of an object to the second, as it is from the second to the third, it will be as far from the focus of the first point to the focus of the second, as it is from the focus of the second point to the focus of the third point.
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