Popular scientific recreations, tr. and enlarged from 'Les récréations scientifiques'. |
Dentro del libro
Resultados 1-5 de 45
Página
... remains in a glass swung round in a perpendicular circle ; how sound is conducted by solid substances ; how a glass globe filled with water becomes a microscope ; and how various optical illusions are produced , & c . This portion of ...
... remains in a glass swung round in a perpendicular circle ; how sound is conducted by solid substances ; how a glass globe filled with water becomes a microscope ; and how various optical illusions are produced , & c . This portion of ...
Página 13
... remains resting on the table in the position shown in fig . 7. This experi- ment , which we have successfully performed on different animals , can also be accomplished by drawing a straight line with a piece of chalk on a slate . M ...
... remains resting on the table in the position shown in fig . 7. This experi- ment , which we have successfully performed on different animals , can also be accomplished by drawing a straight line with a piece of chalk on a slate . M ...
Página 27
... remains in equilibrium . If the stem sinks five divisions , it is evident that the weight of the object corresponds to that of five cubic centimetres of displaced water , or five grams . It is obvious , therefore , from the preceding ...
... remains in equilibrium . If the stem sinks five divisions , it is evident that the weight of the object corresponds to that of five cubic centimetres of displaced water , or five grams . It is obvious , therefore , from the preceding ...
Página 42
... remains in equilibrium . Fig . 35. - The pendulum . The seconds ' pendulum oscillates sixty times an hour , and must be of a certain length in certain places . In London it is 391393 inches , and furnishes a certain standard of length ...
... remains in equilibrium . Fig . 35. - The pendulum . The seconds ' pendulum oscillates sixty times an hour , and must be of a certain length in certain places . In London it is 391393 inches , and furnishes a certain standard of length ...
Página 46
... remains in suspension . It is atmospheric pressure which produces this phenomenon . If , instead of water , we put milk in the bottle , or some other fluid denser than water , we shall see that the milk also remains suspended in the ...
... remains in suspension . It is atmospheric pressure which produces this phenomenon . If , instead of water , we put milk in the bottle , or some other fluid denser than water , we shall see that the milk also remains suspended in the ...
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...