 | David Ames Wells - 1871 - 462 páginas
...conbodieT^n r dLt dition are more imperfect conductors of heat hea " than liquids. Common air, especially, is one of the worst conductors of heat with which we are acquainted. is air 497. Air is, however, readily heated hy cortvection. Thus, when a portion of air by coming in... | |
 | David Ames Wells - 1872 - 520 páginas
...gaseous, or aeriform condition are more imperfect conductors of heat than liquids. Common air, especially, is one of the worst conductors of heat with which we are acquainted. FIG. 24. The non-conducting properties of fibrous and porous substances are due almost altogether to... | |
 | David Ames Wells - 1875 - 464 páginas
...conbodies'ro'mhict dition are more imperfect conductors of heat heat? than liquids. Common air, especially, is one of the worst conductors of heat with which we are acquainted, now is air 497. Air is, however, readily heated by conheated? vection. Thus, when a portion of air... | |
 | 1882 - 406 páginas
...cools wine ; in hot climates it produces ice. Humid soils are little benefited by summer heats, because water, in a quiescent state, is one of the worst conductors...warmed at the surface transmits little or no heat. The small warmed portion expands, becomes lighter than that below, and consequently retains its position... | |
 | Tea cycolopaedia - 1882 - 406 páginas
...cools wine ; in hot climates it produces ice. Humid soils are little benefited by summer heats, because water, in a quiescent state, is one of the worst conductors...warmed at the surface transmits little or no heat. The small warmed portion expands, becomes lighter than that below, and consequently retains its position... | |
 | 1850 - 346 páginas
...below the surface of the water-table is, at no period of the year, higher than from 46° to 48°, ie, in agricultural Britain. This temperature is little...warmed at the surface transmits little or no heat downwards. The small portion warmed expands, becomes lighter than that below, consequently retains... | |
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... in agricultural Britain. This temperature is little affected by summer heats for the following short reasons. Water, in a quiescent state, is one of the worst conductors of heat with which we are acquainted. Water warmed at the surface transmits little... 
