Category ArchiveScience
Intoxicating Tales & Personal & Science Posted by James Killus, 24 Oct 2007 06:37 am
Alcohol
Forget the caffe latte, screw the raspberry iced tea
A Malibu and Coke for you, a G&T for me
Alcohol, Your songs resolve like
my life never will
When someone else is picking up the bill I love you more than I did the week before
I discovered alcohol
O Alcohol, would you please forgive me?
For while I cannot love myself
I’ll use something else
–”Alcohol,” Barenaked Ladies
If you take a molecule of the simplest hydrocarbon, methane, remove one of its four hydrogen atoms and replace it with a hydroxyl group (-OH), you get methanol, the simplest alcohol. The hydrogen at the end of the hydroxyl is more “labile” than the others, so it’s relatively easy for methanol to lose it. That leaves the oxygen with a very friendly bond dangling, and it likes to hook up with its nearby carbon buddy,
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GNF & World War II & Apocalypse & Science & WAAGNFNP Posted by James Killus, 23 Oct 2007 06:22 am
Firestorms
[Note: In light of the enormity of the firestorms happening in Southern California, we are reposting James’ Firestorms for those who missed it previously, or who have something more or new to say. And we send our very best wishes to those suffering from and fleeing from the flames.
-Oaktown Girl, Minister of Justice, WAAGNFNP]
So fires always produce an updraft. In truly big fires, the question becomes how the updraft interacts with the local weather. If the local winds are stronger than the updraft, and the fire is big, uncontrolled, and uncontained, you have a conflagration. If the fire creates its own winds, you have a firestorm.
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If you try to light a match under micro-gravity conditions (we all got used to “zero-g” so some smarty pants had to go and call it “micro-gravity”) and just hold it in one place, it will self-extinguish. The match will use up enough of the oxygen in its surrounding volume of air to extinguish the flame. It doesn’t have to use up all the oxygen, either; most flames go out in air that still has enough O2 in it for people to breathe—barely.
Depending on the fuel, (e.g. hydrogen needs less oxygen to burn than methane does), the usual figure given is that 14%-16% oxygen is needed to sustain a fire. People can manage on a bit less; Biosphere II dropped below 14% before they pumped in some additional O2, but they didn’t have to contend with elevated CO2 levels; in fact, what they’d been losing was CO2, by absorption into their nice new concrete structure, with bacteria converting soil organics and O2 into CO2. They’d had a bit of a “slow burn.”
Your basic candle flame is fed fresh air by gravity, specifically, the air coming in to replace the hot gases that have become lighter than air in the hot flame. That’s called the “fire draft” and fireplaces exist to direct the fire draft upwards, so the smoke doesn’t choke the people warming themselves by the fire. The chimney/flue of the fireplace also accelerates the fire draft if you build it right, and both Ben Franklin and Benjamin Thompson, (Count Rumford), invented some tricks that are still in use.
So fires always produce an updraft. In truly big fires, the question becomes how the updraft interacts with the local weather. If the local winds are stronger than the updraft, and the fire is big, uncontrolled, and uncontained, you have a conflagration. If the fire creates its own winds, you have a firestorm.
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Encounters with Strangers & Ideas & Personal & Science Posted by James Killus, 17 Oct 2007 05:59 am
Ozone in the Troposphere
…well yes you did get some kind of award for “Mostest Detailed Information on an Obscure Topic”. –JP Stormcrow
[D]on’t tempt me to go all photochemical on your ass. If you want detailed information on really obscure topics, I can bury you. –James Killus
Ozone is the key ingredient in photochemical smog. Air quality standards for smog are designed to limit ozone on the assumption that, if ozone is reduced, other photochemical smog constituents will also be reduced. While other air pollutants like carbon monoxide and fine particulates are, by and large, directly emitted, ozone is a “secondary air pollutant,” meaning that it is formed by chemical processes in the atmosphere.
There is, however, a natural background of ozone in the troposphere, the layer of air that contains 90% of the atmosphere, and the part of the atmosphere where we breathe, where weather happens, etc.
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Books and Literature & Movies & Science Posted by James Killus, 24 Sep 2007 06:35 am
Rocket Boys Meet the Radioactive Boy Scout
Until I began to build and launch rockets, I didn’t know that my hometown was at war with itself over its children, and that my parents were locked in a kind of bloodless combat over how my brother and I would live our lives. I didn’t know that if a girl broke your heart, another girl, virtuous at least in spirit, cold mend it on the same night. And I didn’t know that the enthalpy decrease in a converging passage could be transformed into jet kinetic energy if a divergent passage was added. The other boys discovered their own truths when we built our rockets, but those were mine.
– Rocket Boys by Homer Hickam
Rocket Boys was made into a movie, “October Sky,” the title being an anagram of Rocket Boys, and I’m still charmed by it. I’ve found that the film is much beloved in some quarters, but I found it to be a disappointment, as so many such films are, because the book had the texture of truth, while the film had the texture of Hollywood. Relationships were generified, characters were stereotyped, you know the drill.
There have been a number of historical paths whereby the bright kid gets out and up in the world. Rocket Boys is a description of a new path: Rocket Scientist, exemplified by Hickam himself, but also, to my reading, the more important character, Quentin, the hard scrabble kid who uses his brain and big words to protect himself from his circumstances, and who decides that Hickam, the son of the mine superintendent, has access to the resources they would need to start a rocketry club.
In 1957, the town of Coalwood, in West Virginia, is cut off from the world in ways that are simply unfathomable today. For example, a major point in the book is when their science teacher, through considerable effort, manages to procure for them a book on rocketry. One. Single. Book. Is it possible to picture such a time today, when Amazon.com and Abebooks.com are universally available?
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Science Fiction & GNF & Apocalypse & Academia & Science Posted by James Killus, 19 Sep 2007 06:41 am
Disintegrators, Death Rays, and Zap Guns
[click cartoon to enlarge]
Sometimes they were called “blasters, ray guns, or even zap guns,” although that last one was sometimes also used for the “stun gun” the puny sibling to the much mightier Death Ray. Asimov had one called a “Disinto.” Hugo Gernsback was sure they’d be either radio waves or powered by radium. Fritz Leiber imagined the “fission pistol,” that had all the nuclear reactions in the gun going in the same direction. A. E. van Vogt used light to “conduct” nuclear reactions to the target, at least on the Space Beagle. In Slan, it was just raw atomic power. Once in a while the death rays were “sonic.” More frequently they were “electron guns” which actually exist in television sets, but for something else entirely (though one may argue that TV is something of a stun device). H. G. Wells began the whole thing with the “heat ray.”
And we wanted them, maybe as much as we wanted to go into space (which is maybe why I wasn’t as interested in the things as my fan boy brethren). And it wasn’t just us.
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Apocalypse & Science & WAAGNFNP Posted by Kiera, 31 Aug 2007 06:18 am
Conservation – Us versus Them?
I had what you might call a rude awakening on a recent trip to San Diego where I enjoyed my first trip ever to the San Diego Zoo.
During the visit, we took the bus tour that gives you highlights of all of the species the zoo boasts, and provides what turns out to be a great deal of information on endangered species and conservation. I was shocked out of my complacency when the guide spoke about one critically endangered species that they had brought back from the brink of extinction. She said that they now had 14 breeding pairs that they would love to return to their natural habitat…if that natural habitat still existed.
These animals (some kind of grazing mammal that resembled a cross between an antelope, a goat, and a cow – I was so surprised by her statement that I’ve totally spaced on the name) are living in a tiny re-creation of their original ecosystem, and to keep the herd viable, are traded back and forth between other zoos, wild animal parks and refuges. There is no available habitat that they can be returned to because of the encroachment of man.
I’d always thought that the biggest danger that man posed to this planet was through pollution, waste of natural resources, and the byproducts of technology. Not so.
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GNF & World War II & Apocalypse & Science & WAAGNFNP Posted by James Killus, 13 Aug 2007 06:49 am
Firestorms
If you try to light a match under micro-gravity conditions (we all got used to “zero-g” so some smarty pants had to go and call it “micro-gravity”) and just hold it in one place, it will self-extinguish. The match will use up enough of the oxygen in its surrounding volume of air to extinguish the flame. It doesn’t have to use up all the oxygen, either; most flames go out in air that still has enough O2 in it for people to breathe—barely.
Depending on the fuel, (e.g. hydrogen needs less oxygen to burn than methane does), the usual figure given is that 14%-16% oxygen is needed to sustain a fire. People can manage on a bit less; Biosphere II dropped below 14% before they pumped in some additional O2, but they didn’t have to contend with elevated CO2 levels; in fact, what they’d been losing was CO2, by absorption into their nice new concrete structure, with bacteria converting soil organics and O2 into CO2. They’d had a bit of a “slow burn.”
Your basic candle flame is fed fresh air by gravity, specifically, the air coming in to replace the hot gases that have become lighter than air in the hot flame. That’s called the “fire draft” and fireplaces exist to direct the fire draft upwards, so the smoke doesn’t choke the people warming themselves by the fire. The chimney/flue of the fireplace also accelerates the fire draft if you build it right, and both Ben Franklin and Benjamin Thompson, (Count Rumford), invented some tricks that are still in use.
So fires always produce an updraft. In truly big fires, the question becomes how the updraft interacts with the local weather. If the local winds are stronger than the updraft, and the fire is big, uncontrolled, and uncontained, you have a conflagration. If the fire creates its own winds, you have a firestorm.
Continue Reading »
Economics & Ideas & Human Rights & Science Posted by James Killus, 01 Aug 2007 06:28 am
Social Darwinism
Social Darwinism actually predates Darwin, Herbert Spencer coined the phrase “survival of the fittest” several years before Darwin published The Origin of Species. Spencer was more Lamarkian than Darwinian, actually, but “Social Darwinism” was the fittest catch phrase. Add the broth of 19th Century racial theories, and you have a truly toxic brew. Stephen J. Gould has suggested that an opposition to Social Darwinism was behind William Jennings Bryan’s opposition to biological Darwinism, and I find it plausible though there are those who disagree Gould’s suggestion would mean, among other things, that Bryan got another bum rap from history.
One of the funny-but-also-sad things I sometimes see are the bumper magnet decals that show a Darwin fish being eaten by a Jesus fish, seemingly suggesting that the car owner doesn’t believe in Darwinian evolution, but does believe in “survival of the fittest,” i.e. Social Darwinism. Certainly that is a general attitude from a good many people on the Right. Dog-eat-dog society, but let’s not consider the natural world as anything other than divinely planned. Well, that’s okay; dogs were intelligently designed.
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Academia & Ideas & Gender Issues & Science Posted by James Killus, 25 Jul 2007 03:37 am
Lavoisier
Antoine-Laurent Lavoisier was born in 1743 to Jean-Antoine Lavoisier, a prominent lawyer, and Emilie Punctis, who belonged to a rich and influential family, and who died when Antoine-Laurent was five years old. He was basically raised by his maiden
aunt Mlle Constance Punctis, who arranged for his education at the College Mazarin, which was noted for its faculty of science.
Although young Antoine completed a law degree in accordance with family wishes, his true calling was in science. On the basis of his early scientific work, primarily in geology, he was elected at the age of 25—to the Academy of Sciences, France’s most elite scientific society.
In the same year as his election to the Academy, in order to finance his scientific research, he bought into the Ferme Générale, the private corporation that collected taxes for the Crown on a for profit (as you can see, “privatization” is hardly a new idea). A few years later he married the daughter of another “tax farmer.” Her name was Marie-Anne Pierrette Paulze, and she was not quite 14 at the time. Madame Lavoisier learned English, in order to translate the work of British chemists like Joseph Priestley and Henry Cavendish for her husband. She also studied art and engraving and illustrated Lavoisier’s scientific experiments.
Lavoisier has been called the “father of modern chemistry” for good reason. He established the principle of conservation of mass in chemistry and physics, and performed a series of experiments which, combined with the work of Priestly and Cavendish, overthrew the theory of phlogiston as an explanation of combustion, and thereafter the swept away the classical theory of the elements (earth, air, fire, and water). Lavoisier’s replacement table of the elements ran to some 33 “irreducible substances” most of which were what we today recognize as elements, such as mercury, sulfur, and oxygen, which he renamed from “dephlogistonized air.” He also performed such flashy experiments as demonstrating that diamond is made from carbon by burning one in an atmosphere of pure oxygen.
During the Reign of Terror in 1794, Antoine Lavoisier was arrested, along with 27 others, by the French Revolutionary Tribune for abusing the office of Ferme Générale by adulterating tobacco with water. They were guillotined the same day. When asked for his defense, Lavoisier is famously said to have remarked, “I am a scientist,” to which the tribunal replied, “The Revolution has no need of scientists.” Then “snick” went the head of Lavoisier.
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GNF & Science & WAAGNFNP Posted by Oaktown Girl, 22 Jun 2007 07:00 am
Forward to The Neutron Dance
By James Killus
So I had this little essay entitled, “The Neutron Dance,” because I’m a fan of both neutrons and The Pointer Sisters (June Pointer RIP, 11 April, 2006) and I sent it to the Minister of Justice as part of the We Are All Giant Nuclear Fireball Now Party’s ongoing campaign for a Free Nuclear Zone.
Or something like that. And there’s the rub. Because the Minister of Justice responded by asking me to make some changes, give some context perhaps, add some background and “say a little something about where you’re going with it and why we should care.”
Fair enough, albeit with a soupçon of “are you really sure you want to get me started?” Because I can go meta in six different directions before breakfast and twelve after lunch, to say nothing of übernerd posturing, name dropping, and doing my little Smartest Guy in the Room dance at the drop of a hat.
One tempting tangent is the fact that when I was a lad, the universe was protons, neutrons, and electrons to make stuff with, and photons to make it glow. Sure, there were these cool things called “neutrinos” that had been predicted in 1930 and not actually seen until 1955 and the discoverers were lucky they were young and long-lived, because they didn’t get their Nobels until 40 years later, a full 7 years after the later discovery of the mu neutrino, there’s no justice in the world, I’m just sayin’.
There were also, when I was a lad, these things called “mesons” which are pronounced meh-son, mee-son, or even may-son, provided you want to make puns like “meson jar” or “Meson-Dixon Line.” But those were primarily good for getting funding for particle accelerators and shooting down giant birds from outer space.
But soon the particle accelerator guys got enough money to create something called The Standard Model which they insist is close to a Theory of Everything, (ToE) if by “everything” you mean “a few dozen particles and physical constants.” I mean, I’ve checked, and there is not one word in String Theory, or any of the other proposed ToEs that explains who put the bop in the bop she bop, or even where babies come from.
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