Popular Scientific Recreations in Natural Philosophy, Astronomy, Geology, Chemistry, Etc., Etc., EtcW.H. Steele, 1883 - 781 páginas |
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Página 108
... disc the proportion of the angles covered with white is the same , they will always exhibit the same grey colour . Instead of black and white we may make use of different Fig . 105. - Disc which appears uniformly grey colours , and ...
... disc the proportion of the angles covered with white is the same , they will always exhibit the same grey colour . Instead of black and white we may make use of different Fig . 105. - Disc which appears uniformly grey colours , and ...
Página 109
... disc covered with blue and red sectors of equal size , a black disc , of which the sectors are alternately filled in or empty , the disc , as it turns round , will appear blue if the black sectors of the upper disc exactly cover the ...
... disc covered with blue and red sectors of equal size , a black disc , of which the sectors are alternately filled in or empty , the disc , as it turns round , will appear blue if the black sectors of the upper disc exactly cover the ...
Página 194
... disc , and blows it round . The disc in one revolution will therefore open and shut as many holes as there are in the disc and cylinder , and the air blown in will escape in so many puffs - the number of puffs in a given time depending ...
... disc , and blows it round . The disc in one revolution will therefore open and shut as many holes as there are in the disc and cylinder , and the air blown in will escape in so many puffs - the number of puffs in a given time depending ...
Contenido
Science in the Open AirAphidesEvaporation by LeavesAn AquariumThe | 6 |
WATER | 45 |
CHAPTER XIX | 212 |
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Popular Scientific Recreations in Natural Philosophy, Astronomy, Geology ... Gaston Tissandier Vista previa limitada - 2018 |
Popular Scientific Recreations in Natural Philosophy, Astronomy, Geology ... Gaston Tissandier Vista previa limitada - 2016 |
Popular Scientific Recreations in Natural Philosophy, Astronomy, Geology ... Gaston Tissandier Vista previa limitada - 2018 |
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ammonia angles animals antimony apparatus appear Aratus atmosphere attraction axis ball balloon battery body called carbonic acid carpels cause cells centre chemical clouds colour combination compound contains copper crustacea crystals cylinder disc distance earth effect electric current electricity electrophorus equal experiment feet flowers fluid force give glass globe gravity heat hydrogen illustration fig infusoria instrument iron Jupiter known lamp Leyden jar light lime liquid machine magnet means mercury metal miles minerals moon motion move movement nature needle nitric acid object observed obtained Oolite oxide oxygen paper particles pass perceived phenomena phosphorescent piece pistil plants plate platinum pole portion position Praxinoscope pressure produced rays retina rocks rotation round salt seen silver sound stamens stars substances sulphate sulphuric acid surface temperature termed tion tube turn vapour vegetable vibrations weight wheel wind wire zinc