| William Charles Wells - 1815 - 168 páginas
...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 páginas
...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 páginas
...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 - 530 páginas
...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 páginas
...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 páginas
...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 páginas
...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 páginas
...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 páginas
...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 páginas
...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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