 | John Nathan Martin - 1919 - 608 pages
...the sunlight is changed into heat by the leaf, the heat accumulates very rapidly in bright sunshine. It has been found in the case of some leaves that...internal temperature of the leaf to the death point in a few minutes. Transpiration, therefore, rids the leaf of the dangerous excess of heat. Dangers Resulting... | |
 | John Nathan Martin - 1920 - 632 pages
...the sunlight is changed into heat by the leaf, the heat accumulates very rapidly in bright sunshine. It has been found in the case of some leaves that...internal temperature of the leaf to the death point in a few minutes. Transpiration, therefore, rids the leaf of the dangerous excess of heat. Dangers Resulting... | |
 | John Nathan Martin - 1920 - 632 pages
...the sunlight is changed into heat by the leaf, the heat accumulates very rapidly in bright sunshine. It has been found in the case of some leaves that...internal temperature of the leaf to the death point in a few minutes. Transpiration, therefore, rids the leaf of the dangerous excess of heat. Dangers Resulting... | |
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... has filled the air with moisture, results in the leaf injury known as scalding. Under these conditions, transpiration is checked and the temperature of the leaf becomes too high. As a large part of the sunlight is changed into heat by the leaf, the... 