 | William Charles Wells - 1815 - 168 страници
...bodies, which were sheltered by a substance a little above them. I found, for example, upon one night, that the warmth of grass, sheltered by a cambric handkerchief...of grass, shielded in the same manner, as the two abo,ve-mentioned, from the influence of the sky, was 4°. Possibly, experience has long ago taught... | |
 | William Gifford, Sir John Taylor Coleridge, John Gibson Lockhart, Whitwell Elwin, William Macpherson, William Smith, John Murray, Rowland Edmund Prothero (Baron Ernle), George Walter Prothero - 1815 - 558 страници
...bodies, which were sheltered by a substance a little above them. I found, for example, upon one night, that the warmth of grass, sheltered by a cambric handkerchief...portions of grass, shielded in the same manner as the above mentioned, from the influence of the sky, was 4°. Possibly, experience has long ago taught gardeners... | |
 | William Charles Wells - 1815 - 174 страници
...bodies, which were sheltered by a substance a little above them. 1 found, for example, upon one night, that the warmth of grass, sheltered by a cambric handkerchief...handkerchief actually in contact with it. On another tiight, the difference between the temperatures of 'two portions of grass, shielded in the same manner,... | |
 | William Charles Wells - 1818 - 536 страници
...bodies, which were sheltered by a substance a little above them. I found, for example, upon one night, that the warmth of grass, sheltered by a cambric handkerchief...of grass, shielded in the same manner, as the two above-mentioned, from the influence of the sky, was 4°. Possibly, experience has long ago taught gardeners... | |
 | William Charles Wells - 1818 - 554 страници
...bodies, which were sheltered by a substance a little above them. I found, for example, upon one night, that the warmth of grass, sheltered by a cambric handkerchief raised a few inches in the air, was 5° greater, than that of a neighbouring piece of grass, which was sheltered by a similar handkerchief... | |
 | John Claudius Loudon - 1822 - 1494 страници
...bodies, which were sheltered by a substance a little above them. 1 found, for example, upon one night, that the warmth of grass, sheltered by a cambric handkerchief...greater than that of a neighbouring piece of grass wlu'ch was sheltered by a similar handkerchief actually in contact with it. On another night, the difference... | |
 | John Claudius Loudon - 1825 - 1250 страници
...very slight shelter to plants, in averting or lessening injury from cold, on a still and serene night. cambric handkerchief raised a few inches in the air, was 3° greater than that of a neighboring pi«e of grass which was shelter«! by a similar handkerchief actually in contact with... | |
 | John Claudius Loudon - 1826 - 1252 страници
...bodies, which were sheltered by a substance a little above them. I found, for example, upon one night, that the warmth of grass, sheltered by a cambric handkerchief...inches in the air, was 3° greater than that of a neighboring piece of grass which was sheltered by a similar handkerchief actually in contact with it.... | |
 | Thomas Curtis (of Grove house sch, Islington) - 782 страници
...exposed to the atmosphere, notwithstanding some disadvantages in the medium of experiment ; and that grass, sheltered by a cambric handkerchief raised a few inches in the air, was 3°, and on •one occasion 4°, warmer than grass covered with a similar handkerchief, but actually in... | |
 | Mrs. Marcet (Jane Haldimand) - 1830 - 302 страници
...handkerchief was sufficient ; and that when raised a few inches in the air, the warmth of the grass beneath was 3° greater than that of a neighbouring piece...similar handkerchief actually in contact with it. All his experiments confirmed those of Dr. Wells, and shewed that by placing substances for the shelter... | |
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On the other hand; a difference in temperature, of some magnitude, was always observed on still and serene nights, between bodies sheltered from the sky by substances touching them, and similar bodies, which were sheltered by a substance a little above... 
