The training school reader. [Ed.] by W.J. Unwin. 2nd book, division 1William Jordan Unwin 1853 |
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Страница 54
... LEVER , AND WHEEL AND AXLE . The Mechanical Powers are the Lever , the Wheel and Axle , the Pulley , the Inclined Plane , the Wedge , and the Screw . These are certain contrivances for lifting or otherwise moving large weights by the ...
... LEVER , AND WHEEL AND AXLE . The Mechanical Powers are the Lever , the Wheel and Axle , the Pulley , the Inclined Plane , the Wedge , and the Screw . These are certain contrivances for lifting or otherwise moving large weights by the ...
Страница 55
... lever of the first kind , the fulcrum is situated between the power and the weight . A see - saw is a lever of this kind , the persons swinging on it acting as the power and the weight . The beam of a pair of scales is another example ...
... lever of the first kind , the fulcrum is situated between the power and the weight . A see - saw is a lever of this kind , the persons swinging on it acting as the power and the weight . The beam of a pair of scales is another example ...
Страница 56
... lever of the third kind when the power is tc the weight as the length of the lever is to the arm of the weight . The general condition of equilibrium for all kinds of levers is thus expressed : -A lever is in equilibrium when the power ...
... lever of the third kind when the power is tc the weight as the length of the lever is to the arm of the weight . The general condition of equilibrium for all kinds of levers is thus expressed : -A lever is in equilibrium when the power ...
Страница 83
... lever , and for every turn it advances along the bolt a space equal to the distance between the threads . In this case the bolt is fixed , but sometimes the nut is fixed , and the bolt is made to advance in a similar manner . In this ...
... lever , and for every turn it advances along the bolt a space equal to the distance between the threads . In this case the bolt is fixed , but sometimes the nut is fixed , and the bolt is made to advance in a similar manner . In this ...
Страница 84
... lever , it will mark off any number of divisions , each of which would be the ten thousandth part of an inch ; and if a mark be made for every thousandth part of a turn of the lever , a hundred thousand divisions would be made in the ...
... lever , it will mark off any number of divisions , each of which would be the ten thousandth part of an inch ; and if a mark be made for every thousandth part of a turn of the lever , a hundred thousand divisions would be made in the ...
Чести термини и фразе
action adjective arms army atmosphere ATUM avoirdupois Baliol barons battle body centre of gravity Christ Christianity conquest Constantius Chlorus crown cubic Danegeld Danes death defeated denotes direction duke duke of Gloucester earl earth East Anglia Edward Edward IV England ENGLISH HISTORY-PLANTAGENET LINE equal equilibrium Excelsior express fall feet feudal force French Gloucester greater ground hear Henry Henry VI hundred hundredth inches inclined plane Jews John Jordan king of France kingdom land length LESSON lever London Matilda means mechanical Mercia mountain move moveable nation Normandy Northumbria noun occupied ocean parliament past Perfect Progressive person PLANTAGENET LINE plural possession pounds Prince prisoner pulley queen reign revolt Richard river Roman ROOT rope Scotland screw sentence sheaves side singular slain space square Stephen Langton Suetonius temperature Tense thou throne tribes vapour velocity verb vowel wedge weight Wessex wind words
Популарни одломци
Страница 105 - MILTON ! thou shouldst be living at this hour : England hath need of thee : she is a fen Of stagnant waters : altar, sword, and pen, Fireside, the heroic wealth of hall and bower, Have forfeited their ancient English dower Of inward happiness. We are selfish men ; Oh ! raise us up, return to us again ; And give us manners, virtue, freedom, power.
Страница 22 - These are thy glorious works, Parent of good, Almighty, thine this universal frame, Thus wondrous fair ; thyself how wondrous then ! Unspeakable, who sitt'st above these heavens, To us invisible, or dimly seen In these thy lowest works; yet these declare Thy goodness beyond thought, and power divine.
Страница 8 - I knew to the contrary, it had lain there for ever ; nor would it, perhaps, be very easy to show the absurdity of this answer. But suppose I had found a watch upon the ground, and it should be inquired how the watch happened to be in that place, I should hardly think of the answer I had before given — that, for anything I knew, the watch might have been always there.
Страница 40 - Excelsior! ,O stay,' the maiden said, ,and rest Thy weary head upon this breast!' A tear stood in his bright blue eye, But still he answered with a sigh, Excelsior! ,Beware the pine-tree's withered branch! Beware the awful avalanche!
Страница 76 - Triumphal arch, that fill'st the sky When storms prepare to part, I ask not proud Philosophy To teach me what thou art. Still seem, as to my childhood's sight, A midway station given For happy spirits to alight Betwixt the earth and heaven.
Страница 66 - Tis brightness all ; save where the new snow melts Along the mazy current. Low, the woods Bow their hoar head ; and, ere the languid Sun Faint from the west emits his evening ray, Earth's universal face, deep hid and chill, Is one wild dazzling waste, that buries wide The works of man.
Страница 58 - See Salem built, the labour of a God ! Bright as a sun the sacred city shines ; All kingdoms and all princes of the earth Flock to that light ; the glory of all lands Flows into her ; unbounded is her joy, . And endless her increase.
Страница 39 - The shades of night were falling fast, As through an Alpine village passed A youth, who bore, 'mid snow and ice, A banner with the strange device, Excelsior ! His brow was sad ; his eye beneath Flashed like a falchion from its sheath, And like a silver clarion rung The accents of that unknown tongue, Excelsior...
Страница 77 - How came the world's gray fathers forth To watch thy sacred sign ! And when its yellow lustre smiled O'er mountains yet untrod, Each mother held aloft her child To bless the bow of God.
Страница 9 - ... the watch must have had a maker ; that there must have existed, at some time and at some place or other, an artificer or artificers who formed it for the purpose which we find it actually to answer ; who comprehended its construction, and designed its use.