What kind of impact does extreme, sustained heat have on the human body? The systems in the human body that enable it to adapt to heat become overwhelmed. When a person is exposed to heat for a very long time, the first thing that shuts down is the ability to sweat. We know that wh...
Heat Loss from the Human Body Heat loss by sweating depends on the fact that when a liquid evaporates, it absorbs an enormous quantity of heat from its surroundings. In the case of water, this amounts to 2556j for every milliliter(ml) that evaporates. Therefore, when 1ml. of sweat evap...
There is a saying that, "People tend to feel sleepy in spring, doze in summer and feel tired in autumn." As the weather becomes cool during End of Heat, many people will feel languid and weary, which is called "autumn weariness". It is a...
Consideration of the effects of heat falls into two natural divisions; namely, the acute results of encountering high temperatures for short periods, and the effects of residence in tropical climates. Drinker,1 in a recent article, has discussed some of the physiologic aspects of encountering these...
There is a saying that, "People tend to feel sleepy in spring, and feel tired in autumn." As the weather becomes cool during End of Heat, many people will feel languid and weary, which is called "autumn weariness". It...
【题目】 Every human being, no matter what he is doing, gives off body heat. T he usualproblem is how to get rid of it. But the designers of the University of Pittsburgh set themselves the opposite problem--how to collect body heat. T hey have designed a collection system which makes...
This analysis of the processes concerned in heat loss from the body extends and confirms the data reported recently by WINSLOW, HERRINGTON and GAGGE [see this Bulletin, 1938, v. 13, 21].The heat loss by radiation, convection and vaporization, the rectal and skin temperatures and the heat pr...
Combustion - Chemical Reactions, Heat, Oxidation: Combustion, fire, and flame have been observed and speculated about from earliest times. Every civilization has had its own explanation for them. The Greeks interpreted combustion in terms of philosophica
【题目】D Every human being, no matter what h e is doi ng, gives of f body heat. T h e usual problem is how to get ri d o f it. But th e designers o f the University o f Pittsburgh set themselves th e op posit e problem-how to collect body heat an d the heat given of...
When it gets too hot, the human body knows how to cool down. Itsweats, passing salty water called sweat through the skin to lose heat. But unlike the body, houses don't know how to keep cool. And in hot parts of the world wher...