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At what point does wind chill turn into frictional heating?

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Categories: Human Body.

Tags: windchill.

 

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What do some astronomers mean when they refer to our physical existence as the result of star dust?

 

How can we supposedly be made up of stardust like so many astronomers profess when we essentially came from nothing?

If our parents had not copulated; we wouldn’t be here, dust or no dust.

 

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  • Asked by mrvision
  • on 2010-08-31 18:46:51
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Last edited on: 2010-09-01 11:08:24

Categories: Human Body.

Tags: stardust.

 

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Does alcohol cause oxygen deprivation of the brain?

I heard that there is some old (circa 1960-19070) and well known research showing that alcohol causes red blood cell to agglutinate into big "lamps" (tens or even hundreds in a lump). Apparently these lumps are clearly visible in eye capillaries if I were to use a microscope.

Some people say that agglutinated red cell can't get through small capillaries of the brain to reach neurons and as a result we get a high similar to what we get if we go too high on a hot air balloon without an oxygen mask.

I'd really like to know if all above is true/partially true/all wrong as it looks to me as a very likely explanation of how alcohol actually works.

Sergei Zhyzhyn, Glasgow

 

media
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 (1 vote) average rating:4

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Last edited on: 2010-08-27 14:44:12

Categories: Human Body.

Tags: alcohol, Oxygen, Neuron, redbloodcell.

qod 

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Why is water is "clear"

As the origins of life and the eye are ocean-based, it makes sense that the properties of the human eye ("why we see what we see") were largely evolved to perform specific tasks suitable for water. The fact that we can only observe a limited range of the electromagnetic spectrum—the part that water doesn't filter out—being a good example.

However, is the fact that we perceive water as being "clear" important? Is our optic system calibrated to see clean water as "clear". Obviously there are many things to factor in here: what the eye receives, how the brain perceives colour, even how we sociologically define colours, but water having "no colour" and not causing alarm or distress, for whatever reason would seem to be a good default for the whole thing.

Does anyone have any thoughts on this?

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Categories: Human Body.

Tags: water, evolution, colour, Eyes, color.

 

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Killable jump

How heigt I need jump, if I want dead immediately?

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  • Asked by aku506
  • on 2010-08-23 15:46:50
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Categories: Human Body.

Tags: jump, death, Iselfmuder, Killable.

 

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Do each sperm equal a unique individual?

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Given the millions of sperm that travel up the vaginal canal seeking the egg to fertilize, do those that don’t make it represent millions of “unique individuals” that will never exist?

In other words, if another sperm got there before the one that resulted in me, would I exist or would I be a totally different individual?

 

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 (1 vote) average rating:4

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  • Asked by mrvision
  • on 2010-08-21 17:30:47
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Categories: Human Body.

Tags: fertilization.

 

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How is it humans can eat red meat raw with no ill effects, but cant do the same with other meats?

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  • Asked by Jamie22
  • on 2010-08-21 15:34:20
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Categories: Human Body.

Tags: raw, redmeat.

 

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I have an odd problem involving electricity.

This was originally posted on Yahoo! Answers. No one could find a solution to my problem and someone sent me here.

My house was not humid at all.

I'd like to start out by saying that I don't believe in magic, I'm not on drugs, and I honestly have no idea what's going on. A couple of weeks ago I fell asleep in my room with the lights on (I know the details are pointless, but I don't want to miss anything). When I woke up, I went to go on my Alienware M17X. The night before I slept with the lights on I didn't go to sleep at all. I started to type and was literally shocked by the side of the computer. I thought it was a jab or something, so I kept going. The electrical shock hurt. I got shocked again, and again. I decided to leave my computer alone and go up to my dad. I rested my chin (yes, rested my chin) on my dad's MacBook Pro, and found that I also got shocked from it. I touched the surface and felt a weird feeling on it. Like vibration, but only when I moved. I asked my dad about it and he said that he had never felt that. I forgot about it for a couple of days. The next couple of days, I was cutting some meat so my little brother could eat it. I was shocked from the metal knife, and immediately there was a small burn mark on my finger (it has healed well, but it's still there). Many, many other cases have happened and they all hurt like hell. I walk on my bare feet and I don't drag them. I drink mainly water and sometimes juice. I don't think I'm developing supernatural powers. I just want an explanation, and any would be great.

  • 1 week ago
  • - 1 day left for voting

Additional Details I would like to add that I also felt the shock on my brother's laptop. I would appreciate someone reading all of this before dismissing it. If my father never felt a vibration, why should I? Why would all of the laptops in the house have this problem, and only for me? Why would I get shocked with a knife? I told you: I'm not on drugs, I don't believe in magic, and I don't believe in superpowers. I would like a rational explanation.

1 week ago

It's very puzzling. As I doubt my body can conduct electricity, I don't know how the knife shocked me. But I still have the small burn on my finger. I wouldn't joke about this, if anyone is wondering. There's no point. I appreciate all of the answers, but if there's a doctor or scientist who might know what's going on, I'd appreciate your answer even more. Thanks. My original post - http://answers.yahoo.com/question/index?qid=20100812062049AAmrtCK&r=w

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Categories: Human Body.

Tags: electricity, shock.

 

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Why do I feel exhausted after going swimming, even if I haven't actually done much swimming?

I visited the local swimming pool today with my sisters. The majority of the time I was kneeling on the floor of the pool and supervising them. When I was in the pool I didn't feel as though I was doing much (if any) exercise, though on the way home I felt as though I'd done a lot more than usual. My muscles didn't ache but I felt very drained of evergy and rather hungry.

Can anyone explain why this happened?

Thanks in advance.

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  • Asked by Lana
  • on 2010-08-16 23:45:56
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Categories: Human Body.

Tags: Swimming, tiredness.

 

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