本题目来源于试卷: gc textbook chater 14 heat，类别为 IB物理学
[问答题]
A premature baby in anv8 / 60s;klui(y zym3st*9rsbrm/ jmn incubator can b7thlf./. hvbili2b5 c ld eq99(qlvp*e dangerously cooled even when the air temperature in the incubator is b /vcb qdv9l.i7.q 95(iplthe l*hfl 2warm. Explain.
参考答案:
Premature babies have underdeveloped skin, and
they can lose a lot of moisture through their skin by evaporation. For a baby in a very warm environment, like
an incubator at 37 $^{\circ} $ C, there will be a large evaporative
effect. A significant increase in
evaporation occurs at incubator temperatures, and that evaporation of moisture
from the baby will cool the baby dramatically.
Thus an incubator must have not only a high temperature but also a high
humidity. Other factors might include
radiative energy loss, blood vessels being close to the skin surface and so
there is less insulation than a more mature baby, and low food consumption to
replace lost energy.
本题详细解析:
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