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​Outdoor Safety
The more you know, the safer you are.

4 WAYS BODY HEAT IS LOST IN THE WILDERNESS

3/21/2016

1 Comment

 
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Feeling cold and uncomfortable in the wilderness is something that can be avoided. Here's the science behind the ways we lose body heat outside. The more body heat we lose, the colder we get, sometimes it can lead to hypothermia. But if you are familiar with how body heat is lost, you can prevent yourself or others from getting too cold.  
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Evaporation
​When water evaporates from our sweaty skin and wet clothes, heat is transferred from our bodies into the atmosphere. This is why proper layering in the outdoors is very important. Sweat soaked/wet clothes can lead to massive heat loss, even when worn with other dry layers. 

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Convection
Think of convection as body heat lost by cool air movement, like the wind. Similar to blowing on hot soup to cool it down. As the air moves over your body, it carries away heat. In fact, convection is wind chill! Wearing a wind layer or hardshell jacket cuts down on heat loss by convection. 

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Conduction
Conduction is heat transfer from one mass to another. When you lay on the cold ground or snow, body heat is quickly lost. Sleeping pads or other insulation between the body and ground is very important when treating someone in the wilderness. Body heat lost by conduction occurs even more rapidly in cold water.  
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​Radiation

As our bodies burn energy, heat is given off as a by-product. This heat radiates into the outside environment. Down jackets work by trapping our radiating body heat in the tiny air pockets created by the down feathers. A major amount of heat is lost via radiation from the head. Warm hats and beanie caps are essential for heat retention. 

Take our online wilderness med course to learn how to treat hypothermia and more all at your own pace! 

1 Comment
resumeedge reviews link
3/8/2018 04:10:16 am

It was a very informative post. I was somehow reviewed with the scientific terms way back in my grade school days through your brief discussion about the methods of heat transfer. It makes sense and applies what we had learned back then. It became essential to know what would you wear during the winter season or having snowboarding activity. You should post next about how to prepare or maintain warm temperature when you are out in the winter.

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