 | James Ferguson - 1764 - 322 pàgines
...remote object, we can fcarce fee a point of it but what is at leaft as broad as the great mirrour, we may confider the rays of each pencil, which flow...each other, and to cover the whole reflecting furface DUPF. But to avoid confufion in the figure, we mall only draw two rays of a pencil flowing from each... | |
 | James Ferguson - 1776 - 546 pàgines
...the great mirror, we may confider the rays of each pencil, which flow from every point of the objeft, to be parallel to each other, and to cover the whole...rays of a pencil flowing from each extremity of the objedt into the great tube, and trace their progrcfs, through nil their reflections and refractions,... | |
 | James Ferguson - 1823 - 406 pàgines
...we can scarcely see a point of it but what is at least as broad as the great mirror, we may consider the rays of each pencil, which flow from every point...parallel to each other, and to cover the whole reflecting surface DUVF. But, to avoid confusion in the figure, we shall only draw two rays of a pencil flowing... | |
 | George G. Carey - 1825 - 274 pàgines
...we can scarcely see a point of it but what is at least as broad as the great mirror, we may consider the rays of each pencil, which flow from every point...parallel to each other, and to cover the whole reflecting surface DUV F. But to avoid confusion in the figure, we shall only draw two rays of a pencil flowing... | |
 | James Ferguson - 1839 - 556 pàgines
...we can scarcely see a point of it but what is at least as broad as the great mirror, we may consider the rays of each pencil, which flow from every point...parallel to each other, and to cover the whole reflecting surface DUVF. But, to avoid confusion in the figure, we shall only draw two rays of a pencil flowing... | |
 | John Henry Pepper - 1860 - 474 pàgines
...we can scarcely see a point of it but what is at least as broad as the great mirror, we may consider the rays of each pencil, which flow from every point of the object, to be parallel to each other, BOY S PLAYBOOK OF SCIENCE. and to cover the whole reflecting surface D uv r. But to avoid confusion... | |
 | John Henry Pepper - 1866 - 472 pàgines
...we can scarcely see a point of it but what is at least as broad as the great mirror, we may consider the rays of each pencil, which flow from every point of the object, to be parallel to each other, BOYS PLAYEOOK OF SCIENCE. and to cover the wholp. reflecting surface D uv p. But to avoid confusion... | |
 | John Henry Pepper - 1869 - 470 pàgines
...we can scarcely see a point of it but what is at least as broad as the great mirror, we may consider the rays of each pencil, which flow from every point...parallel to each other, and to cover the whole reflecting surface D IT v F. But to avoid confusion in the figure, we shall only draw two rays of a pencil flowing... | |
 | John Henry Pepper - 1875 - 498 pàgines
...we can scarcely see a point of it but what is at least as broad as the great mirror, we may consider the rays of each pencil, which flow from every point of the object, to be parallel to each uther, and to cover the whole reflecting surface B uv v. But to avoid confusion in the figure, we shall... | |
 | John Henry Pepper - 1881 - 538 pàgines
...we can scarcely sec a point of it but what is at least as broad as the great mirror, we may consider the rays of each pencil, •which flow from every...parallel to each other. and to cover the whole reflecting surface D nv r. But to avoid confusion in the figure, we shall only draw two rays of a pencil flowing... | |
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P mn with that of the great one. Now, since in viewing a very remote object, we can scarcely see a point of it but what is at least as broad as the great mirror, we may consider the rays of each pencil, which flow from every point of the object, to be... 