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#21
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British Airways flight grounded in Helsinki
Henry wrote:
Hatunen wrote: snip There's an awful lot of confusion among an awful lot of people about the terminology involved here and the way the results are expressed, so let's take a careful look. If we write 5%, we say five percent, meaning five parts out of one hundred. Likewise, 1% is one percent or one part out of a hundred. Since 0.5 is one-half, then 0.5% is one-half of one percent, meaning five parts out of one thousand. Now, for the purpose of an example, let's assume an adult human being whose body contains five litres of blood. (This is in fact well within the norm.) Let's have this person drink some beer containing 5% alcohol. (This is a bit on the strong side, perhaps, but not at all unusual.) In the US, a 12-oz. bottle of beer contains 355 ml. In Europe, the standard bottle is a little smaller, at 330 ml. Let's take the European size, and say that a six-pack contains 1980 ml. Then, let's round that off to 2000 ml., or two litres. So we've got two litres of beer containing 5% alcohol, which means that we have a total of 100 ml of 'pure' alcohol. If our drinker were to pound down an entire six-pack of this strong(ish) beer in a very short time, he would no doubt be drunk. How drunk? For the sake of the example, let's assume that (a) all of the alcohol in the beer is absorbed into the blood immediately and (b) none of it is metabolised. That means he's got 100 ml of alcohol dispersed in 5000 ml of blood. That means 1 part in 50, or 2%. Two percent. Written as a decimal, that is 0.02 blood alcohol--it is NOT 0.02%. Take a look at http://en.wikipedia.org/wiki/Blood_alcohol_content |
#22
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British Airways flight grounded in Helsinki
Henry wrote:
Hatunen wrote: snip There's an awful lot of confusion among an awful lot of people about the terminology involved here and the way the results are expressed, so let's take a careful look. If we write 5%, we say five percent, meaning five parts out of one hundred. Likewise, 1% is one percent or one part out of a hundred. Since 0.5 is one-half, then 0.5% is one-half of one percent, meaning five parts out of one thousand. Now, for the purpose of an example, let's assume an adult human being whose body contains five litres of blood. (This is in fact well within the norm.) Let's have this person drink some beer containing 5% alcohol. (This is a bit on the strong side, perhaps, but not at all unusual.) In the US, a 12-oz. bottle of beer contains 355 ml. In Europe, the standard bottle is a little smaller, at 330 ml. Let's take the European size, and say that a six-pack contains 1980 ml. Then, let's round that off to 2000 ml., or two litres. So we've got two litres of beer containing 5% alcohol, which means that we have a total of 100 ml of 'pure' alcohol. Do you think that much alcohol is directly absorbed in the bloodstream? http://en.wikipedia.org/wiki/Blood_alcohol_content |
#23
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British Airways flight grounded in Helsinki
mrtravel wrote:
Henry wrote: Hatunen wrote: snip There's an awful lot of confusion among an awful lot of people about the terminology involved here and the way the results are expressed, so let's take a careful look. If we write 5%, we say five percent, meaning five parts out of one hundred. Likewise, 1% is one percent or one part out of a hundred. Since 0.5 is one-half, then 0.5% is one-half of one percent, meaning five parts out of one thousand. Now, for the purpose of an example, let's assume an adult human being whose body contains five litres of blood. (This is in fact well within the norm.) Let's have this person drink some beer containing 5% alcohol. (This is a bit on the strong side, perhaps, but not at all unusual.) In the US, a 12-oz. bottle of beer contains 355 ml. In Europe, the standard bottle is a little smaller, at 330 ml. Let's take the European size, and say that a six-pack contains 1980 ml. Then, let's round that off to 2000 ml., or two litres. So we've got two litres of beer containing 5% alcohol, which means that we have a total of 100 ml of 'pure' alcohol. Do you think that much alcohol is directly absorbed in the bloodstream? http://en.wikipedia.org/wiki/Blood_alcohol_content Let me make it simple. If someone was shooting alcohol directly into their veins, YOUR info would make sense. 100 ml of alcohol into 5 liters of blood is 2 percent. However, most people drink it and only a small percentage gets absorbed in the blood. |
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