Popular scientific recreations, tr. and enlarged from 'Les récréations scientifiques'. |
Dentro del libro
Resultados 1-5 de 41
Página 94
... moon is non - luminous , as she derives her light from the sun , as does the earth , etc. Light is distributed in rays . These rays are straight in all directions . The velocity of light is almost inconceivable . It travels at a rate of ...
... moon is non - luminous , as she derives her light from the sun , as does the earth , etc. Light is distributed in rays . These rays are straight in all directions . The velocity of light is almost inconceivable . It travels at a rate of ...
Página 145
... moon and planets contain similar dark lines as are seen in the solar spectrum , but the fixed stars show different lines . By spectrum analysis we know the various constituents of the sun's atmosphere , and we can fix the result of our ...
... moon and planets contain similar dark lines as are seen in the solar spectrum , but the fixed stars show different lines . By spectrum analysis we know the various constituents of the sun's atmosphere , and we can fix the result of our ...
Página 147
... moon gives us spectrum like a reflection of the former , but has no atmosphere , and that comets are but gases or vapours . The most minute particles of a grain of any substance can be detected to the millionth fraction . The 1000 of a ...
... moon gives us spectrum like a reflection of the former , but has no atmosphere , and that comets are but gases or vapours . The most minute particles of a grain of any substance can be detected to the millionth fraction . The 1000 of a ...
Página 294
... moon ! " But to descend to history . It is undoubtedly true that in the time of Nero Simon Magus attempted to fly from one house to another by means of some mechanical contrivance , and failing , killed himself . Roger Bacon , the ...
... moon ! " But to descend to history . It is undoubtedly true that in the time of Nero Simon Magus attempted to fly from one house to another by means of some mechanical contrivance , and failing , killed himself . Roger Bacon , the ...
Página 300
... moons . Moreover , the great extent of so cold a cloud explains very satisfactorily the sudden changes of temperature which occur in our climates . " M. Flammarion gives in his " Voyages " some very interesting and amusing particulars ...
... moons . Moreover , the great extent of so cold a cloud explains very satisfactorily the sudden changes of temperature which occur in our climates . " M. Flammarion gives in his " Voyages " some very interesting and amusing particulars ...
Términos y frases comunes
acetic acid ammonia angles animals antimony apparatus appear atmosphere attraction axis ball balloon battery body called carbonic acid carpel cause cells centre chemical clouds colour combination compound contains copper crustacea crystals cylinder disc distance earth effect electricity equal experiment feet flowers fluid force give glass globe gravity heat hydrogen illustration fig infusoria instrument iron known lamp Leyden jar light lime liquid machine magnet means mercury metal miles minerals moon motion movement nature needle nitric acid nitrogen object observed obtained oxide oxygen paper particles pass perceived phenomena phosphorus piece pistil plants plate platinum pole portion position possess Praxinoscope pressure produced rays retina rocks rotation round salt seen silver sound specific gravity stamens stars substances sulphate sulphuric acid surface temperature termed tion tube turn vapour vegetable vibrations weight wheel wind wire zinc
Pasajes populares
Página 447 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Página 311 - There is a place for everything and everything is in its place.
Página 533 - He telleth the number of the stars, and calleth them all by their names.
Página 549 - There rolls the deep where grew the tree; Oh, Earth, what changes hast thou seen ! There, where the long street roars, has been The stillness of the central sea. The hills are shadows, and they flow From form to form, and nothing stands ; They melt like mists, the solid lands — Like clouds, they shape themselves and go...
Página 466 - ... 430 feet ; Mars, a rather large pin's head, on a circle of 654 feet ; Juno, Ceres, Vesta, and Pallas, grains of sand, in orbits of from...
Página 446 - Had in her sober livery all things clad; Silence accompanied, for beast and bird, They to their grassy couch, these to their nests, Were slunk, all but the wakeful nightingale; She all night long her amorous descant* sung; Silence was pleased: now...
Página 492 - Saw the moon rise from the water Rippling, rounding from the water, Saw the flecks and shadows on it, Whispered, "What is that, Nokomis?" And the good Nokomis answered : " Once a warrior, very angry, Seized his grandmother, and threw her Up into the sky at midnight; Right against the moon he threw her ; "Tis her body that you see there." Saw the rainbow in the heaven, In the eastern sky the rainbow, Whispered,
Página 630 - Her silver crescent tipped with sable clouds, Conclude she bodes a tempest on the main, And brews for fields impetuous floods of rain.
Página 593 - Tremble, thou earth, at the presence of the Lord ; at the presence of the God of Jacob ; 8 Who turned the hard rock into a standing water, and the flint-stone into a springing well.
Página 449 - The Axis OF THE EARTH is an imaginary line passing through the centre of it...