Systematic Education: Or Elementary Instruction in the Various Departments of Literature and Science; with Practical Rules for Studying Each Branch of Useful Knowledge, Volumen2Longman, Hurst, Rees, Orme, and Brown, 1815 |
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Página 42
... sensation excited , by waves thus formed , and which enter the ear , and produce a like motion in a thin membrane stretched across the auditory passage , is called sound . Hence it is assumed , that a sound is propagated from the ...
... sensation excited , by waves thus formed , and which enter the ear , and produce a like motion in a thin membrane stretched across the auditory passage , is called sound . Hence it is assumed , that a sound is propagated from the ...
Página 64
... sensation in the eye , therefore the colours of the secondary bow are produced by fewer rays , and consequently will be fainter than the colours of the primary bow . In the primary bow , reckoning from the outside of it , the colours ...
... sensation in the eye , therefore the colours of the secondary bow are produced by fewer rays , and consequently will be fainter than the colours of the primary bow . In the primary bow , reckoning from the outside of it , the colours ...
Página 65
... sensation produced upon the retina . Before however we come to speak of the manner of vision , which is dependent on sensation , we shall describe the three humours , as they are called , included within the coats ; these are the ...
... sensation produced upon the retina . Before however we come to speak of the manner of vision , which is dependent on sensation , we shall describe the three humours , as they are called , included within the coats ; these are the ...
Página 66
... sensation is excited on the retina only , such persons cannot see those objects , the rays from which converge before they reach the retina . They do not however stop , but cross each other , and will excite confused sensations , such ...
... sensation is excited on the retina only , such persons cannot see those objects , the rays from which converge before they reach the retina . They do not however stop , but cross each other , and will excite confused sensations , such ...
Página 146
... sensation produced by a substance denominated caloric ; which , though never existing alone , penetrates all bodies ; -diminishes the attraction of their several parts ; and uniformly expands their dimensions . By means of caloric ...
... sensation produced by a substance denominated caloric ; which , though never existing alone , penetrates all bodies ; -diminishes the attraction of their several parts ; and uniformly expands their dimensions . By means of caloric ...
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Términos y frases comunes
acid Adam Smith affections agriculture alkalies ammonia Amphibia animals appear association attention become benevolence body bones called capital circumstances colour commerce common complex connected connexion consequences consists convex lens degree denominated derived direction dispositions earth ecliptic electricity employed excite exercise external feelings fluid genus glass habit happiness Hence human important increase individual influence instance kind labour laws manufactures means mental mental philosophy mind moon moral motion motive muscles nations Natural Philosophy nature nitric acid object obligation observed operations oxydes oxygen pains persons Philosophy planets pleasures population potash principles produce properties proportion proposition quadrupeds rays readers referred regard respect retina rule of duty sensation sense sensible shew simple ideas Sophisms species specific gravity substances sulphuric acid supposed surface syllogism term thought tion truth tube understanding vessel virtue wealth Wealth of Nations whole words writers
Pasajes populares
Página 441 - THE annual labour of every nation is the fund which originally supplies it with all the necessaries and conveniences of life which it annually consumes, and which consist always either in the immediate produce of that labour, or in what is purchased with that produce from other nations.
Página 354 - the doing good to mankind, in obedience to the will of God, and for the sake of everlasting happiness.
Página 478 - It is in this manner that money has become in all civilized nations the universal instrument of commerce, by the intervention of which goods of all kinds are bought and sold, or exchanged for one another.
Página 97 - When any substance was introduced into this arch, it instantly became ignited ; platina melted as readily in it as wax in the flame of a common candle ; quartz, the sapphire, magnesia, lime, all entered into fusion...
Página 492 - Taking the whole earth, instead of this island, emigration would, of course, be excluded; and, supposing the present population equal to a thousand millions, the human species would increase as the numbers 1, 2, 4, 8, 16, 32, 64, 128, 256, and subsistence as 1, 2, 3, 4, 5, 6, 7, 8, 9. In two centuries the population would be to the means of subsistence as 256 to 9; in three centuries as 4096 to 13, and in two thousand years the difference would be almost incalculable.
Página 321 - MORAL Philosophy, Morality, Ethics, Casuistry, Natural Law, mean all the same thing ; namely, that science which teaches men their duty and the reasons of it.
Página 113 - Aries the Ram, Taurus the Bull, Gemini the Twins, Cancer the Crab, Leo the Lion, Virgo the Virgin, Libra the Balance, Scorpio the Scorpion, Sagittarius the Archer, Capricornus the Goat, Aquarius the Waterbearer, and Pisces the Fishes...
Página 495 - I should propose a regulation to be made, declaring that no child born from any marriage taking place after the expiration of a year from the date of the law, and no illegitimate child born two years from the same date, should ever be entitled to parish assistance.
Página 489 - It is in this manner that the demand for men, like that for any other commodity, necessarily regulates the production of men, quickens it when it goes on too slowly, and stops it when it advances too fast.
Página 475 - Labour was the first price, the original purchase-money that was paid for all things. It was not by gold or by silver, but by labour, that all the wealth of the world was originally purchased ; and its value, to those who possess it, and who want to exchange it for some new productions, is precisely equal to the quantity of labour which it can enable them to purchase or command.