Lectures at Home: Discovery and Manufacture of Glass, Lenses and Mirrors, the Structure of the EyeDarton and Harvey, 1834 - 211 páginas |
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Página 116
... cross , and character , and talisman , And almagist , and altar , nothing bright ; For fitful was the lustre , pale and wan As watch - light by the bed of some departing man . But soon within that mirror , huge and high , Was seen a ...
... cross , and character , and talisman , And almagist , and altar , nothing bright ; For fitful was the lustre , pale and wan As watch - light by the bed of some departing man . But soon within that mirror , huge and high , Was seen a ...
Página 159
... cross to the eye , are intended to express the rays of light reflected from the cross . They meet in the eye , and there form an image very much smaller than the real cross ; but , partly from experience , and partly , from some means ...
... cross to the eye , are intended to express the rays of light reflected from the cross . They meet in the eye , and there form an image very much smaller than the real cross ; but , partly from experience , and partly , from some means ...
Página 160
... cross through a double convex lens . The black cross is of the same size as in the first drawing ; but the rays reflected from it do not proceed in the same direction to the eye . They pass right onwards to the lens ; and , being re ...
... cross through a double convex lens . The black cross is of the same size as in the first drawing ; but the rays reflected from it do not proceed in the same direction to the eye . They pass right onwards to the lens ; and , being re ...
Página 161
... cross is repre- sented by the paler colour . It would appear black to the eye , like the real image ; but re- presented thus , it enables you to see that the size is increased in appearance only : the real image is just the same as in ...
... cross is repre- sented by the paler colour . It would appear black to the eye , like the real image ; but re- presented thus , it enables you to see that the size is increased in appearance only : the real image is just the same as in ...
Página 167
... cross one another , and pass out of the lens diverging : if they met with no interruption , these rays would continue to rise up through the body of the microscope , and would form , in the upper part 168 DIAGRAM EXPLAINED . of it , an ...
... cross one another , and pass out of the lens diverging : if they met with no interruption , these rays would continue to rise up through the body of the microscope , and would form , in the upper part 168 DIAGRAM EXPLAINED . of it , an ...
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Termos e frases comuns
ACHROMATIC TELESCOPE Alexander Severus ancient appear Arnott basin beads beautiful beneath bright burning-glasses called camera-obscura casting contrived converge convex lens cool crown-glass crystalline lens dark deception discovery distance distinct Dollond eclipse ELEUSINIAN MYSTERIES employed eye-glass farther Father Scheiner feet FINDING THE LONGITUDE fish flint-glass focus Galileo glass globe Greenwich half bound heat HERCULANEUM Hutton instrument inverted Joyce Jupiter kinds of glass Lardner LECTURE lenses looking looking-glasses magnified means melted microscope moon Mosaic Mount Etna Mysteries object object-glass observe OPTICAL oven pass perceive person phantom phial pieces of glass plate of glass plate-glass PORTLAND VASE power of refraction prism produced pupil quicksilver rays of light rays proceeding reflected REFLECTING TELESCOPES refraction retina Roman round sand seems seen Septimius Severus shilling specimen substance suppose surface telescope thing tin-foil tion TRANSIT OF VENUS transparent tube window word
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Página 202 - Thus with the year Seasons return, but not to me returns Day, or the sweet approach of even or morn, Or sight of vernal bloom, or summer's rose, Or flocks, or herds, or human face divine: But cloud instead, and ever-during dark Surrounds me, from the cheerful ways of men Cut off, and for the book of knowledge fair Presented with a universal blank Of nature's works, to me expunged and rased, And wisdom at one entrance quite shut out.
Página 18 - Dido pass ; Or held, by Solomon's own invitation, A torch at the great Temple's dedication.
Página 17 - Revisiting the glimpses of the moon, Not like thin ghosts, or disembodied creatures, But with thy bones and flesh, and limbs and features. Tell us, for doubtless thou canst recollect, To whom should we assign the Sphinx's fame ? Was Cheops or Cephrenes architect Of either pyramid that bears his name ? Is Pompey's pillar really a misnomer ? Had Thebes a hundred gates, as sung by Homer...
Página 20 - And standest undecayed within our presence, Thou wilt hear nothing till the Judgment morning, When the great trump shall thrill thee with its warning. Why should this worthless tegument endure, If its undying guest be lost...
Página 19 - Since first thy form was in this box extended We have, above ground, seen some strange mutations : The Roman empire has begun and ended, New worlds have risen, we have lost old nations; And countless kings have into dust been humbled, While not a fragment of thy flesh has crumbled.
Página 17 - Memnonium was in all its glory, And time had not begun to overthrow Those temples, palaces, and piles stupendous, Of which the very ruins are tremendous. Speak! for thou long enough hast acted dummy. Thou hast a tongue, - come, let us hear its tune; Thou'rt standing on thy legs above ground, mummy! Revisiting the glimpses of the moon, Not like thin ghosts or disembodied creatures, But with thy bones and flesh, and limbs and features.
Página 202 - Though hard and rare : thee I revisit safe, And feel thy sovran vital lamp ; but thou Revisit'st not these eyes, that roll in vain To find thy piercing ray, and find no dawn ; So thick a drop serene hath quenched their orbs, Or dim suffusion veiled.
Página 16 - AND thou hast walked about (how strange a story!) In Thebes's streets three thousand years ago, When the Memnonium was in all its glory, And time had not begun to overthrow Those temples, palaces, and piles stupendous, Of which the very ruins are tremendous!
Página 114 - Fair all the pageant, — but how passing fair The slender form which lay on couch of Ind ! O'er her white bosom strayed her hazel hair, Pale her dear cheek, as if for love she pined ; All in her night-robe loose she lay reclined...
Página 18 - Thou couldst develop — if that withered tongue Might tell us what those sightless orbs have seen — How the world looked when it was fresh and young, And the great deluge still had left it green; Or was it then so old that history's pages Contained no record of its early ages ? Still silent!