Class-book of Science and Literature1869 - 324 σελίδες |
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Σελίδα 22
... light travels . The velocity of light is so great that for any distance within the limits to which sound could be heard , its passage may be considered as instantaneous . This being the case , the blow , shot , explosion , & c . causing ...
... light travels . The velocity of light is so great that for any distance within the limits to which sound could be heard , its passage may be considered as instantaneous . This being the case , the blow , shot , explosion , & c . causing ...
Σελίδα 25
... Light and Heat consist of a vibratory motion of the particles of light - giving and hot bodies , and that they are transmitted in a manner exactly similar to the transmission of sound . The medium , however , cannot be the air , since light ...
... Light and Heat consist of a vibratory motion of the particles of light - giving and hot bodies , and that they are transmitted in a manner exactly similar to the transmission of sound . The medium , however , cannot be the air , since light ...
Σελίδα 26
... light passes is called a medium . When light passes from one medium into another , it is refracted or bent out of its straight course . C Fig . 27 . This is seen by a very simple SO experiment . Let a coin be placed in the bottom of a ...
... light passes is called a medium . When light passes from one medium into another , it is refracted or bent out of its straight course . C Fig . 27 . This is seen by a very simple SO experiment . Let a coin be placed in the bottom of a ...
Σελίδα 27
... light from every part of the stick under water is refracted , so that it seems to be raised up , as was the case with the coin . So , too , objects at the bottom of a clear stream or pond appear to be raised up , and the water seems ...
... light from every part of the stick under water is refracted , so that it seems to be raised up , as was the case with the coin . So , too , objects at the bottom of a clear stream or pond appear to be raised up , and the water seems ...
Σελίδα 28
... light transmitted through them are always refracted to- wards the thick part , be- cause most lenses are simply double prisms . Thus , take the double - convex and the double - concave lenses 1 and 4 in the figure : the first is as if ...
... light transmitted through them are always refracted to- wards the thick part , be- cause most lenses are simply double prisms . Thus , take the double - convex and the double - concave lenses 1 and 4 in the figure : the first is as if ...
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Class-Book of Science and Literature: Illustrated With Wood Engravings ... Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
ancient animals appearance arms bear beautiful become belong birds blood body bones branches called carried cells close common composed consists contains covered creatures deposited divided earth equal example existence extend eyes fall feet flowers force fruit give greater Greek grow hand hard head heart heat important insects kinds land Latin leaves less light limestone live look mass matter move muscles nature never once organs Pages pass period plants present Price produced raised rays receive remains remarkable rest rise rivers rocks roots round seeds seems seen shells side soft sometimes sound species spring stems stone strata structure substance surface sweet thee thick thou thought trees turn various weight whole wood
Δημοφιλή αποσπάσματα
Σελίδα 244 - And fill all fruit with ripeness to the core ; To swell the gourd, and plump the hazel shells With a sweet kernel; to set budding more And still more, later flowers for the bees, Until they think warm days will never cease.
Σελίδα 192 - I come to pluck your berries harsh and crude, And with forced fingers rude Shatter your leaves before the mellowing year. Bitter constraint, and sad occasion dear Compels me to disturb your season due; For Lycidas is dead, dead ere his prime, Young Lycidas, and hath not left his peer.
Σελίδα 196 - And wipe the tears for ever from his eyes. Now, Lycidas, the shepherds weep no more; Henceforth thou art the genius of the shore, In thy large recompense, and shalt be good To all that wander in that perilous flood.
Σελίδα 212 - Near yonder copse, where once the garden smiled, And still where many a garden flower grows wild ; There, where a few torn shrubs the place disclose, The village preacher's modest mansion rose. A man he was to all the country dear, And passing rich with forty pounds a year; Remote from towns he ran his godly race, Nor e'er had changed, nor wished to change, his place.
Σελίδα 226 - Thou too, hoar Mount! with thy sky-pointing peaks, Oft from whose feet the avalanche, unheard, Shoots downward, glittering through the pure serene Into the depth of clouds, that veil thy breast — Thou too again, stupendous Mountain ! thou That as I raise my head, awhile bowed low In adoration, upward from thy base Slow travelling with dim eyes suffused with tears...
Σελίδα 247 - A thousand spurs are striking deep, a thousand spears in rest, A thousand knights are pressing close behind the snow-white crest ; And in they burst, and on they rushed, while like a guiding star, Amidst the thickest carnage blazed the helmet of Navarre.
Σελίδα 230 - Tis morn, but scarce yon level sun Can pierce the war-clouds, rolling dun, Where furious Frank and fiery Hun Shout in their sulphurous canopy. The combat deepens. On, ye brave, Who rush to glory, or the grave ! Wave, Munich ! all thy banners wave, And charge with all thy chivalry. Few, few shall part where many meet ! The snow shall be their winding-sheet ; And every turf beneath their feet Shall be a soldier's sepulchre.
Σελίδα 190 - TO DAFFODILS FAIR Daffodils, we weep to see You haste away so soon : As yet the early-rising Sun Has not attained his noon. Stay, stay, Until the hasting day Has run But to the even-song ; And, having prayed together, we Will go with you along. We have short time to stay, as you, We have as short a Spring ; As quick a growth to meet decay As you, or any thing. We die, As your hours do, and dry Away, Like to the Summer's rain, Or as the pearls of morning's dew, Ne'er to be found again.
Σελίδα 210 - The unfeeling for his own. Yet, ah! why should they know their fate, Since sorrow never comes too late, And happiness too swiftly flies? Thought would destroy their paradise. No more; where ignorance is bliss, 'Tis folly to be wise.
Σελίδα 210 - That every labouring sinew strains, Those in the deeper vitals rage ; Lo ! Poverty, to fill the band, That numbs the soul with icy hand, And slow-consuming Age.