 | James Pollard Espy - 1841 - Страниц: 620
...some of this vapor into cloud ; for it is known that cloud is formed in the receiver of an air pump when the air is suddenly withdrawn. The distance or...quantity, depending on the number of degrees which the dew point is below the temperature of the air ; and this height may be known at any time by observing... | |
 | 1842 - Страниц: 570
...the nephelescope, shows that the condensation of this vapor is attended with an evolution of heat. "The distance or height to which the air will have...cooled down below the temperature of the air before the vapor begins to condense on the outside. The highest temperature at which it will condense, which is... | |
 | Archibald Tucker Ritchie - 1850 - Страниц: 678
...withdrawn. The height to which the air will have to ascend before it be cold enough to form clouds is a variable quantity, depending on the number of degrees which the dew point is below the temperature of the air ; .... and the difference between the dew point and the... | |
 | Moncure Daniel Conway - 1860 - Страниц: 794
...that cloud is formed in the receiver of an air-pump when the air is suddenly withdrawn. The distance to which the air will have to ascend before it will...below the temperature of the air : and this height may bo known at any time, by observing how many degrees a thin metallic tumbler of water must be cooled... | |
 | Moncure Daniel Conway - 1860 - Страниц: 786
...that cloud is formed in the receiver of an air-pump when the air is suddenly withdrawn. The distance to which the air will have to ascend before it will...is a variable quantity, depending on the number of degrces which the dew-point is below the temperature of the air ; and this height may be known at any... | |
 | Archibald Tucker Ritchie - 1874 - Страниц: 690
...into cloud The height to which the air will have to ascend before it be cold enough to form clouds is a variable quantity, depending on the number of...dew-point is below the temperature of the air And the difference between the dew-point and the temperature of the air in degrees is called the complement... | |
 | 1840 - Страниц: 884
...high enough, the cold produced by expansion from diminished pressure, will condense some of this vapor into cloud ; for it is known that cloud is formed...quantity depending on the number of degrees which the dew point is below the temperature of the air; and this height may be known at any time by observing... | |
| |
The ascending columns will carry up with them the aqueous vapor which they contain, and if they rise high enough, the cold produced by expansion from diminished pressure, will condense some of this vapor into cloud ; for it is known that cloud is formed... 