Shallow Thoughts

Akkana's Musings on Open Source, Science, and Nature.

Thu, 05 Jun 2008

Quote of the Week

From a BBC story on the wife of France's president:
She said her husband was so bright he appeared to have "five or even six brains".

Raises all kinds of intriguing followup questions, doesn't it?

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[ 20:46 Jun 05, 2008    More headlines | permalink to this entry ]

Wed, 20 Feb 2008

The mysterious vanishing planes

BBC was full of interesting news today.

Definitely the most interesting story was the one about the F-15 pilots rescued off Florida. It begins:

Two US fighter pilots have been rescued after their jets went missing over the Gulf of Mexico, the Air Force says.

Air Force spokeswoman Shirley Pigott said the pilots were rescued after their F-15C Eagles disappeared on a training mission.

The disappearance had triggered a search involving Coast Guard personnel, helicopters, planes and boats.

The Air Force has not yet determined if the planes collided or otherwise malfunctioned. The weather was clear.

Wow, that's quite a story! Not only do we have fighter planes disappearing in midair, but even after the pilots have been rescued, no one has any idea whether they collided.

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[ 18:15 Feb 20, 2008    More headlines | permalink to this entry ]

Fri, 28 Oct 2005

A Value of "Close" With Which I was Previously Unfamiliar

A very strange article in today's SF Chronicle describes "Mysterious, bright lights in the night sky Wednesday that alarmed or bemused scores of Bay area residents".

It atributes to Andrew Fraknoi, chairman of the Foothill College astronomy department and media hound (it doesn't say that second part), information that "the lights were probably Mars and Venus, two planets that currently appear close together and will probably remain brilliant for another week or two until their orbits begin moving them away from the Earth again."

Aside from the "probably" (I was under the impression that the basic orbits of the major planets were fairly well understood, and that it's fairly rare that a planet suddenly deviates from its regular orbit in a visible way), I found this curious because Venus is currently in the early evening sky -- since its orbit lies inside that of the Earth, it can never appear to move very far from the Sun -- while Mars, a week before opposition, is rising in the early evening and overhead at roughly midnight.

Just to be sure, I checked with XEphem. The angular distance between Mars and Venus is current 146°. They're almost at opposite ends of the sky. This is a definition of "close" with which I was previously unfamiliar.

I don't know if Fraknoi really said this, or if he was simply misquoted by the reporter, David Perlman, the Chronicle's Science Editor. If so, the misquote is quite pervasive -- he repeats several times throughout the article Fraknoi's assurance that the lights (shown in a photograph accompanying the article, indeed close together though we aren't told anything about the lens used to take the photo) must be Venus and Mars.

Other giggle-inducing quotes from the article:

No one except astronomers could offer an explanation.
Well, gosh, you certainly wouldn't want to listen to those egghead astronomers about a question involving lights in the sky.

(Well, okay, in this case you shouldn't listen to them, because the Mars/Venus explanation obviously doesn't fit the observations.)

According to Fraknoi, Mars now far outshines even the brightest of all the stars in the sky, and when skies are clear, the fourth planet from the sun could look even bigger than normal.
Mars at opposition is certainly brighter than any star (except the Sun, of course). It currently shines with a magnitude of about -2.2 (a smaller number means a brighter object; the brightest star, Sirius, is magnitude -1.4. Venus, at the moment, is much brighter than either one at -4.2, as is usual since it's larger, closer, and more reflective than Mars. That might have been worth mentioning.

I can't figure out whether "even bigger than normal" is supposed to refer to size or brightness. Mars is normally a tiny object as viewed from Earth, too small to see much detail except for a few months around opposition every couple of years. Indeed it is much bigger than normal right now (and a lovely sight in a telescope!), as well as brighter; but "even bigger" seems like an odd phrasing for something normally so small.

But since Mars' size isn't visible except in a telescope, Dave thinks "bigger" here was meant to refer to brightness: the misconception that brighter objects look bigger. I shouldn't make fun of this: the great astronomer Tycho Brahe, in the 1500's, was convinced that stars had angular size instead of being point sources. He thought brighter stars appeared bigger, and based his geocentric solar system model on that. That view wasn't disproved until Galileo invented the telescope. It's a common misconception even today, but I'd hate to think the Chronicle's science editor was encouraging it, so I'll stick to the assumption that he really meant size and that the "even" was just an odd journalistic embellishment.

So what were the mysterious lights? I don't know. I didn't see them, and the article doesn't give enough detail to make a good guess. But the photo looks a lot like airplanes or helicopters; at least one of the lights has a couple of smaller lights to either side, usually a dead giveaway for an aircraft.

Update the following day: I wasn't the only one to complain about this article, and the Chron published a paragraph in the Corrections section this morning clarifying that Venus is nowhere near Mars and could not have been related to the lights people reported.

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[ 10:57 Oct 28, 2005    More headlines | permalink to this entry ]

Fri, 14 Oct 2005

More On Low Orbits

Wacky Chinese orbital physics are in the BBC again. Today's story tells us how they've corrected yesterday's orbital problems. Quoting from China's "official Xinhua news agency", the BBC tells us:
Xinhua said the craft had deviated from its planned trajectory because of the Earth's gravitational pull.

I can hear them now ... "Darn it! I guess we forgot to take the earth's gravity into account when making our orbital calculations!"

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[ 20:40 Oct 14, 2005    More headlines | permalink to this entry ]

Thu, 13 Oct 2005

Darn Those Low Orbits

BBC News Science tells us about the orbital problems of China's manned Shenzhou VI spacecraft.

Gravity has drawn Shenzhou VI too close to earth, the agency said.

Shenzhou VI, which has two astronauts on board, is in a low enough orbit to be affected by the Earth's gravitational pull.

Don't you hate those low orbits that are affected by gravity? Maybe next time they should choose an orbit high enough that it isn't subject to gravity.

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[ 19:39 Oct 13, 2005    More headlines | permalink to this entry ]

Mon, 07 Mar 2005

Mukhtar Mai is a Hero

The acquittals in the Pakistan gang rape case are an outrage. You may have read about the case: a village tribunal in a remote area of Pakistan passed sentence that Mukhtar Mai be gang raped to punish her brother for an offense he allegedly committed (though most news reports indicated that he was not guilty of the offense, which was actually committed by one of the rapists. Not that that has any bearing on whether a wholly innocent woman should be raped for someone else's supposed crimes.)

The case spawned international outrage in a world previously unaware of the brutality of Pakistan's archaic tribunal system. The rapists were convicted and sentenced to death; but last week, their conviction was overturned.

Mukhtar Mai is a hero for standing up to them and continuing to press her case. I can't imagine what it must be like to be in her position. I am in awe of her. Mai's courage will help every woman in Pakistan, and in other countries with similar disregard for women's humanity. And not only that: she's using any financial gains from the case to build schools in her village. She's built two already.

Several of the BBC followup stories have mentioned that most women "sentenced" under this barbaric system, to be raped or otherwise mistreated for the supposed offenses of male members of their clan, accept their fate, "believing that tribal or feudal leaders are too powerful to resist and that the police and judicial systems are stacked against them." If anyone wonders why they might think that, last week's acquittal should answer any such questions rather handily.

None of the stories I've read anywhere goes into detail on the reason for the conviction having been overturned, besides the vague "lack of evidence". This seems odd considering all the reports of the original trial cited eyewitnesses. It's not clear why so few details are being reported. No one mentions the double standard which seems to be in place in Pakistan: where was the opportunity for Mai or her brother to appeal her outrageous punishment for his supposed crime?

The case will be appealed to a higher court, following international outrage at the current verdict. It is not yet clear whether the rapists will remain in prison until then.

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[ 20:37 Mar 07, 2005    More headlines | permalink to this entry ]

Thu, 03 Mar 2005

Boondocks Pulled for Criticising Bush

Slate and Editor and Publisher report that several major newspapers have dropped Monday's Boondocks comic strip.

In the strip, one character reads from a newspaper, "Bush got recorded admitting that he smoked weed." Another character quips, "Maybe he smoked it to take the edge off the coke."

The best part of the story: the Chicago Tribune's given reason for censoring the comic was that it "presents inaccurate information as fact."

It's not clear which part of the comic was the inaccurate information presented as fact. The news about the tape recording in question, which was widely printed and has not been disputed by the White House? Or the quip in response, the one that starts with "maybe"?

If the Chicago Tribune is so worried about inaccurate information presented as fact ... does that mean that they will no longer be reporting on Bush's speeches and press releases?

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[ 08:54 Mar 03, 2005    More headlines | permalink to this entry ]

Wed, 16 Feb 2005

"The Leak": Why Not Subpoena Robert Novak?

I am just utterly not understanding this story on "The Leak".

The news yesterday: Matthew Cooper (Time magazine) and Judith Miller (the New York Times) are to be subpoenaed in the ongoing "Leak" case. (LA Times, or via Yahoo)

You remember "The Leak". Joseph Wilson, the CIA investigator sent to Niger to trace rumours that Saddam Hussein had tried to purchase "yellowcake" uranium, wrote an opinion column in the New York Times accusing President Bush of "misrepresenting the facts on an issue that was fundamental justification for going to war." Wilson's published report had stated the rumours were false, but Bush ignored the report and quoted the rumours as fact in his 2003 State of the Union address.

Roughly a week later, Washington Post columnist Robert Novak wrote that Wilson's wife, Valerie Plame, was a CIA operative, citing information from a "senior administration official".

It being a crime to reveal the identity of an undercover CIA operative, Bush at the time vowed to "find the leak". The current update in the case means two other reporters, Cooper and Miller, who supposedly were also contacted by the same "senior administration official", will be called to testify as to the identity of the person who contacted them. If they refuse, they face imprisonment for contempt of court.

The papers are full of outraged articles arguing that reporters should never be forced to reveal sources, and waving their "First Amendment" flags. And that's fine -- I have no problem with journalists protecting sources.

What I completely don't understand is: Why are Matthew Cooper and Judith Miller, who never wrote anything about the case, being subpoenaed and threatened with improsonment, while Robert Novak, who wrote the article which started all this, is not?

Why, in all the journalistic breast-beating which has accompanied this case, does no one ever suggest concentrating on Novak to find The Leak's identity?

Novak is the reporter who published the article outing Plame. Novak is the reporter who clearly had a source. Sure, question other sources, but why isn't Novak the prime, number-one source in this investigation?

A cynical friend says it's because Novak is a Bush administration mouthpiece, who did the administration's bidding in publishing the article, while Cooper and Miller did not.

Perhaps. But if that's the case, shouldn't that itself be news?

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[ 11:12 Feb 16, 2005    More headlines | permalink to this entry ]