Popular scientific recreations, tr. and enlarged from 'Les récréations scientifiques'. |
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Página 47
... salt water , alcohol , and oil . These four liquids will lie one on the top of the other without ever mixing , even if shaken . Another experiment as to the pressure of the air may be made ( fig . 42 ) . Take a penny and press it ...
... salt water , alcohol , and oil . These four liquids will lie one on the top of the other without ever mixing , even if shaken . Another experiment as to the pressure of the air may be made ( fig . 42 ) . Take a penny and press it ...
Página 67
... salt in solution , and this adds to its resistance , or floating power . It is heavier than fresh water , and the Dead Sea is so salt that a man cannot possibly sink in it . This means that the man's body , bulk for bulk , is much ...
... salt in solution , and this adds to its resistance , or floating power . It is heavier than fresh water , and the Dead Sea is so salt that a man cannot possibly sink in it . This means that the man's body , bulk for bulk , is much ...
Página 79
... salt . The freezing point of water is 32 ° above his Therefore 212-32 gives 180 ° the difference between the freezing and boiling points of water . 180 ° Fahr . corresponds to 100 ° Cent . , and to Réamur , reckoning from freezing point ...
... salt . The freezing point of water is 32 ° above his Therefore 212-32 gives 180 ° the difference between the freezing and boiling points of water . 180 ° Fahr . corresponds to 100 ° Cent . , and to Réamur , reckoning from freezing point ...
Página 89
... salt , for in the act of combining , a great quantity of heat is swallowed up by reason of the heat becoming latent , as it will do when solid bodies become liquid . Such mixtures or combinations are used as Freezing Mixtures when it is ...
... salt , for in the act of combining , a great quantity of heat is swallowed up by reason of the heat becoming latent , as it will do when solid bodies become liquid . Such mixtures or combinations are used as Freezing Mixtures when it is ...
Página 91
... salt will do . White clothing is preferable in summer ( and also in winter if we could only make people believe it ) . White garments radiate less heat in winter , and absorb less heat in summer . An old black kettle will boil water ...
... salt will do . White clothing is preferable in summer ( and also in winter if we could only make people believe it ) . White garments radiate less heat in winter , and absorb less heat in summer . An old black kettle will boil water ...
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...