> As you add heat energy to water, its temperature increases linearly until it gets to about 100 degrees C. From here it takes in additional energy, but its temperature doesn't rise - this energy is instead used to break its bonds to complete the phase change from liquid into gas. Once the phase change is complete and it has become a gas, you see a linear relationship between heat and temperature once again.
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> So what's happening is you're transferring your body heat into the sweat, which is evaporating and carrying that energy away.
While technically correct (if you read the two passages separately), it seems as if you imply that sweat reaches 100 degrees C prior to evaporation. It does not.
mr47 t1_j0mro23 wrote
Reply to comment by TonyJPRoss in How does high humidity affect perceived temperature in hot and cold environments? by MindTheReddit
> As you add heat energy to water, its temperature increases linearly until it gets to about 100 degrees C. From here it takes in additional energy, but its temperature doesn't rise - this energy is instead used to break its bonds to complete the phase change from liquid into gas. Once the phase change is complete and it has become a gas, you see a linear relationship between heat and temperature once again. > > So what's happening is you're transferring your body heat into the sweat, which is evaporating and carrying that energy away.
While technically correct (if you read the two passages separately), it seems as if you imply that sweat reaches 100 degrees C prior to evaporation. It does not.