Daily Archives: August 18, 2008

We're Awake … But We're Very Puzzled

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Gender issues in science. Nerd Girls at Bad Astronomy, which begat smart = sexy at Cocktail Party Physics, which begat Flirt harder. I’m a physicist at sciencegeekgirl.

There’s some really interesting commentary to go along with the posts.

I have the sneaking suspicion that this topic is one where it is impossible to be right; there is no position one can take that won’t piss someone else off. Given, then, that I’m already in trouble, I will blithely assume that this is simply a Boolean state.

On “geeky” vs “girly,” Jennifer Observes with the very first comment on Phil’s blog,

What we really need to get over is this silly “either/or” tendency…

which I think is spot on, and it’s a bit surprising to me to see later remarks to the contrary — things to the effect of it’s great how girls can like science and girly stuff, too, and stereotypes such as “shopping is for girls.” I thought stereotypes were bad, hence the title of this post, and my comment that some people will get PO-ed no matter which side of this argument you’re on. Unless it’s just a big conspiracy to confuse me.

The other comment that came up a few times was that if we try and deny the significance of physical attraction we’re fighting a few million years of evolution. It’s true. Men have evolved to be responsive to visual cues. However, along the same timeline, humans have also evolved bigger brains and developed language and culture, and so response to visual stimuli does not give you the excuse to be a jerk.

He Helps Us Get High

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August 18, 1868. Jules Janssen “invents” helium. (At least, according to principal Skinner. “Curse the man who invented helium! Curse Pierre Jules César Janssen!)

Janssen was observing an eclipse and measured an emission line with a wavelength of 587.49 nm, which didn’t correspond to any known element. Norman Lockyer also observed the line later that year, and as it could not be reproduced in the lab, proposed that it was a new element, which was named after helios, the sun.

Just Don't Make It So They Blow

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Sucky Schools – How To Repair Our Education System

Lots of good stuff.

Our schools are fact-junkies. We teach students thousands of useless facts that will be forgotten as soon as the next exam is over. Hell, usually they’re forgotten even before that, and then you see students cramming late into night, only to forget it all within 48 hours. How’s that for effective use of everyone’s time.
[…]
Standardized testing is like a black hole that sucks up and annihilates any learning it gets close to. It bends the very fabric of curriculum and students’ time.

via sciencegeekgirl

Hail to Thee, Blithe Neutron!

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TS2 on Target – view from the LOQ cabin

A brief overview of some neutron history

Since it carries no charge, one could not “weigh” a neutron directly in a mass spectrometer, but had to estimate its mass from the difference between deuterium and hydrogen. However in 1935, more accurate measurements allowed Chadwick to derive a neutron mass of between 1.0084 and 1.0090 units; the modern estimate lies almost exactly in the middle of this range, and so the neutron is appreciably heavier than the proton. Was Uncle Albert wrong? Chadwick immediately suggested (following Einstein again) that neutrons should have an excess of energy and be beta radioactive in common with other nuclei under like circumstances. It was not so easy, however, to verify this experimentally. But, partly owing to World War II, it was not until 1948 that neutron decay was verified – indeed, 12 minutes after they’ve been kicked out of the nucleus half of them will have split apart as Chadwick had suggested. So if you want to use neutrons, you can’t keep ’em in a bucket.

That last bit is a tad misleading — it’s no doubt referring to the decay, not the ability to confine. Since neutrons have a magnetic moment, they can be trapped. It’s a weird, shallow bucket, and it leaks, but you can keep ’em there until they decay.