Can You Have a Barn Without Uranium?

I was perusing a back issue of Physics Today, reading an article about events at the Large Hadron Collider, when I noticed the word, “femtobarn”. It was defined as 10-39 sq.cm. or a decimal followed by 38 zeros then a one. This is pretty small.

As a midwesterner, I thought I knew the size of a barn. So I multiplied out the femto (you know, milli-, micro-, nano-, pico-, femto-) to get the quadrillion times larger 10-24sq.cm. This is a barn? I had to Google this, and found a clear article at Stanford defining it for lay-folk.

In brief, physicists in the 1940’s were often discussing the cross-sectional area of the Uranium Nucleus. They thought of calling it the Oppenheimer (too many syllables) or the Bethe (too likely to be heard as Beta). Well, most of the research was being done in the midwest, and slamming protons into this target made them think of tossing tomatoes at a barn. The name “barn” was used in a reviewed article, accepted, and it stuck. Now, why femtobarns as the standard unit? It’s just practical for their purposes, like kilometers or megabytes.

By now, if you’ve read this far, you are probably wondering, “why should we care?” Sure, it’s fun to say “femtobarn”, but what use is it in everyday life?

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Missouri Senator Jim Talent: ethanol scam artist

Senator Talent allegedly represents me.  He is allegedly a thinking man.  He allegedly cares about our country. 

Senator Jim Talent sends me an email newsletter every month or so.  His current newsletter says this about Iraq:

As day-to-day life there improves, my hope is that more Iraqis will view the liberation of Iraq and the ongoing political progress as a turning point for Iraqi society.

When was that written, I wonder?  Two years ago? Three years ago? 

What else has Senator Jim Talent been up to? [If you’re wondering why I always say “Senator Jim Talent,” I’m hoping that it will make this article more search-engine-friendly than not saying “Senator Jim Talent.  After all, Senator Jim Talent is facing an election in November]. 

Senator Jim Talent does prominently announce some things.  He’s so upset that payday loan shops are so incredibly evil (with their 500% interest loans) that he has announced that he is supporting a bill so that would require payday lenders to offer reduced loan rates, but only to members of the military.  Screw everyone else, I suppose.  I guess it never occurred to Senator Jim Talent that we should pay members of the military decent wages so they don’t have to desperately walk up to the counters of the payday lenders.  Senator Jim Talent is also against promising new forms of stem cell research, but he somehow forgets to put it prominently in his newsletter that he prefers to let real children die in order to protect

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You May Have It Cockeyed If…

Science cannot disprove the existence of god. I have heard this claim made so often and by such a broad spectrum of people that I rarely really think about it. But is that the end of it? Science is concerned with materialism ( in a philosophic sense) and does best…

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Who leaves better clues, God or the Devil?

Here's a Question I Like To Ask when arguing biblical accuracy versus scientific discovery: Postulating an omnipotent God and his potent yet subordinate nemesis: Which has the power to influence the minds of a few men to compose a persuasive text and create a regional following, and which to deposit…

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Newsweek explores recent books denying existence of God.

It’s in the September 11, 2006 issue of Newsweek.   The article explores the issues presented by the following three books:

  • The End of Faith, by Sam Harris
  • Breaking the Spell, by Daniel Dennett and
  • The God Delusion, by Richard Dawkins.

It is a good sign that Newsweek is acknowledging some of the basic points raised by these books.  For example, Newsweek has this to say about the position of Harris on skepicism:

“Tell a devout Christian … that frozen yogurt can make a man invisible,” Harris writes, “and he is likely to require as much evidence as anyone else, and to be persuaded only to the extent that you give it. Tell him that the book he keeps by his bed was written by an invisible deity who will punish him with fire for eternity if he fails to accept its every incredible claim about the universe, and he seems to require no evidence whatsoever.”

The Newsweek article presents the view of Dawkins regarding the basis for morality, as presented by many Christians:

“If there is no God, why be good?” he asks rhetorically, and responds: “Do you really mean the only reason you try to be good is to gain God’s approval and reward? That’s not morality, that’s just sucking up.”

Harris sharply questions the moral “lessons” of the Bible: 

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