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Author Topic:   Is body hair a functionless vestige?
ringo
Member
Posts: 19733
From: frozen wasteland
Joined: 03-23-2005
Member Rating: 2.8


Message 109 of 143 (612434)
04-15-2011 3:09 PM
Reply to: Message 108 by NoNukes
04-15-2011 2:43 PM


NoNukes writes:

That means that big people, male or female, need greater protection against heat loss in a cold, wet climate than do smaller people.


Because of the square-cube law, bigger people have a higher mass-to-surface-area ratio, which should translate to higher heat-producing capacity and lower heat-loss capacity, shouldn't it?

(I don't see it having much to do with hair though.)


If you have nothing to say, you could have done so much more concisely. -- Dr Adequate

This message is a reply to:
 Message 108 by NoNukes, posted 04-15-2011 2:43 PM NoNukes has replied

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 Message 110 by NoNukes, posted 04-15-2011 9:56 PM ringo has seen this message but not replied

  
ringo
Member
Posts: 19733
From: frozen wasteland
Joined: 03-23-2005
Member Rating: 2.8


Message 112 of 143 (612471)
04-15-2011 11:29 PM
Reply to: Message 111 by Jon
04-15-2011 10:52 PM


Jon writes:

human groups from hotter climates tend to be larger and lankier while groups from colder climates tend to be shorter and stockier.


A long, thin shape would have proportionately more surface area than a short, thick one of the same mass.

Consider a sheet of plywood 48 by 96 inches and 1/2 inch thick. That's 9360 square inches of surface area, according to my calculations. Now cut it into 12 inch squares - 32 squares to make a stack 16 inches high. That's 1056 square inches surface area. The short fat stack will stay much warmer than the thin sheet.


If you have nothing to say, you could have done so much more concisely. -- Dr Adequate

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 Message 111 by Jon, posted 04-15-2011 10:52 PM Jon has replied

Replies to this message:
 Message 113 by Jon, posted 04-16-2011 9:00 PM ringo has replied
 Message 117 by OliverChant, posted 04-17-2011 2:29 PM ringo has replied

  
ringo
Member
Posts: 19733
From: frozen wasteland
Joined: 03-23-2005
Member Rating: 2.8


Message 114 of 143 (612552)
04-16-2011 11:02 PM
Reply to: Message 113 by Jon
04-16-2011 9:00 PM


Jon writes:

I can't see why women would need more 'hair holes' than men.


I agree that the hair-holes argument doesn't make any sense. It's pretty funny though.


If you have nothing to say, you could have done so much more concisely. -- Dr Adequate

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 Message 113 by Jon, posted 04-16-2011 9:00 PM Jon has seen this message but not replied

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ringo
Member
Posts: 19733
From: frozen wasteland
Joined: 03-23-2005
Member Rating: 2.8


Message 123 of 143 (612620)
04-17-2011 2:58 PM
Reply to: Message 117 by OliverChant
04-17-2011 2:29 PM


Re: YOUR WRONG
OliverChant writes:

I'm South African and we "white "people are generally larger than the "bbalck people yet we originate from colder climates????


I didn't say "generally larger"; I said specifically longer and thinner. In the very post that you replied to, I demonstrated that longer, thinner shapes have more surface area to dissipate more heat than shorter, fatter shapes of the same mass. But the topic is about the heat-dissipation qualities of hair, not body shape or size.


If you have nothing to say, you could have done so much more concisely. -- Dr Adequate

This message is a reply to:
 Message 117 by OliverChant, posted 04-17-2011 2:29 PM OliverChant has replied

Replies to this message:
 Message 124 by OliverChant, posted 04-17-2011 3:04 PM ringo has not replied

  
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