Introduction to the sciences [by T. Smibert?].1861 |
Términos y frases comunes
alkalies ammonia animals Antarctic Circle appearance atmosphere atoms attraction become beds blood body called carbonic acid causes centre Chambers's chiefly cloth cold colour combination common composed compound consisting containing countries creatures Crustacea degree Describe distance divided earth ecliptic electricity equator examples exist faculties feet fish flowers fluid give glass globe gneiss grains Greek greywacke ground gypsum heat hence hydrogen Ichthyosaurus insects kind land Latin light lime Limestone live Mammalia mass matter metals miles moon motion mountains move muscles Name nature objects Old Red Sandstone oolite organs oxygen particles peculiar pistil plants poles portion possess produced proportion province quadrupeds quartz rays Red Sandstone remarkable reptiles ROBERT CHAMBERS salt seen sentiments shew Silurian solid species stamens stars stone strata Stratified substances supposed surface termed Tertiary tropical Ungulata Unstratified Rocks vapour varieties various vegetable weight
Pasajes populares
Página 1 - IN whatever place we first become aware that we are living beings, the scene which we survey is limited to a very small part of the whole system of Nature — that is, of what exists. If we look beyond the house in which we live, we probably see other houses, fields, hills, plains, or a part of the sea. If we look upward, a more extensive view is presented; we there behold the clear blue sky, where the sun shines by day, and the moon and stars by night. But even these large plains, and that wide...
Página 16 - A ball of iron, weighing a thousand pounds at the level of the sea, would be perceived to have lost two pounds of its weight, as ascertained by a spring balance, if taken to the top of a mountain four miles high.
Página 63 - The investigation of the laws under which these various elementary bodies have formed the numerous compound substances which we see in nature, and the means by which compound substances can be resolved into their original elements, or simple elements thrown into new combinations, are the objects of the science of Chemistry.
Página 11 - D the south pole is in the same state. When the point presented to the sun is at e (which is on the 22d December), it is midsummer to all the southern parts of the earth, and winter to all the north ; but as the exposed part advances towards the point /, the northern regions gradually receive more and more heat, till on the 21st of June it becomes their midsummer.
Página 123 - ... scarcely worthy ; at any rate not more than is at present the empirical law which includes the distances of all the planets from the sun (roughly taken) in one algebraical formula. The observations of Kepler's day were scarcely accurate enough to prove that the relations which he discovered between the distances of the planets from the sun and the periods of their revolutions around him were necessarily to be received as demonstrated truths; and Galileo surely acted most prudently and philosophically...
Página 51 - Hence it follows,' says Sir David Brewster, 'that excited glass repels a ball electrified by excited glass. Excited wax repels a ball electrified by excited wax. Excited glass attracts a ball electrified by excited wax. Excited wax attracts a ball electrified by excited glass.
Página 15 - All falling bodies tend in a direct line to the centre of the earth, which is the centre of the...
Página 61 - Water is one of the most abundant and generally diffused bodies in nature. Though appearing in the form of a liquid substance, it is, in reality, composed of two gases, hydrogen and oxygen, in the proportion of one part of the former to eight of the latter. Its particles or atoms are so slightly united with each other, that the whole...