Filed under: Government, Religion, Science, Society, tech, Terrorism, University of Missouri | Tags: a fine line, atheist, blogging, Cherenkov radiation, jim downey, nuclear power, physics, religion, science, St Pat's Day, technology, University of Missouri, Wikipedia
I had reason to look up this item the other day, and was surprised that I hadn’t ever posted it to the blog. So, in honor of St Pat’s Day (well, OK, not really, but there is a connection…), here’s a little something from my old archives from a few years ago.
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So I wander into this nuclear reactor . . .
This morning’s news that the NRC has declined to force nuclear power plants to take additional precautions to prevent the breach of a nuclear reactor’s core by attack with a jetliner comes as little surprise, given the Bush administration’s attitudes about actual security issues.
But, as always when I hear such news reports, I was taken back to a sunny spring morning some 30 years ago, when me and a couple of college buddies wandered into a nuclear reactor.
It was the weekend of St. Pats day, and we were at the University of Missouri – Rolla to party with a friend of ours who was an engineering student there. I think it was Friday morning, and our friend had some classes he had to attend, so myself and my two friends decided to just explore the campus a bit (we all attended schools elsewhere).
I had considered Rolla for school myself a few years previously, when I had been thinking of going into physics (a dream derailed by poor higher-math skills). So when we came across the research reactor building, I wanted to have a look.
We just wandered in. No, seriously. We just wandered into the building, through a couple of sets of doors, and soon found ourselves standing at a railing, looking down at the glowing blue core of the nuclear reactor. In this day and age it is hard to imagine such a thing – and even at the time it seemed more than a little odd.
A few minutes after we came in, a nice fellow who fit the stereotype image of a science professor came over to us. Short, grey, bearded, balding, wearing a white lab smock over his shirt and jeans. He sort of looked us over, asked what we were up to . . . and then gave us an impromptu tour of the place (after tagging us with personal dosimeters).
It was fascinating, to me at least. The reactor core at this facility sits at the bottom of a large swimming pool, about 20 feet down. That provides all the necessary protection from the radiation generated from operation of the fission reactor (which doesn’t produce much power, and doesn’t use the sort of fuel used in nuclear weapons). Herr Doktor explained all this to us non-scientists, and also explained the eerie blue glow coming off the reactor (which was then in operation).
It was a color like I’ve never seen before or since – a soft electric blue that was both intriguing and repulsive. I knew what it was, having been interested in physics: Cherenkov radiation, caused when the radioactive particles generated by the fission reactions are faster than the speed of light in the water. But it’s the sort of thing that lasts in the memory, embedded there in a way not unlike a religious experience – hard to describe, or explain, or convince others of, yet extremely vivid for the one who experienced it.
Now, I’m not religious. I’m an atheist, in fact. I understand what that blue glow is – yet, whenever someone claims that they have had a religious experience, I can tie it to that same feeling I had on first seeing that other-worldly blue glow.
Well, anyway, I had to share that personal experience, and add a bit of perspective on the changes we’ve seen in terms of security over the last 30 years.
Jim Downey
Filed under: Brave New World, Civil Rights, Connections, Constitution, Government, NPR, Predictions, Privacy, Society, tech | Tags: blogging, civil liberties, DHS, drones, jim downey, Martin Niemöller, NPR, predictions, privacy, Secret Service, technology, Washington Post, Wikipedia
First they flew to watch for illegal immigrants, and I did not speak out—
Because I was not an illegal immigrant.
Then they flew to look for marijuana farms, and I did not speak out—
Because I was not a marijuana farmer.
Then they flew to watch the White House, and I did not speak out—
Because I was not the President.
Then … and then … and then …
Jim Downey
Filed under: Brave New World, DARPA, Science, Science Fiction, tech, YouTube | Tags: blogging, Boston Dynamics, DARPA, jim downey, robotics, science, Science Fiction, technology, www youtube
… courtesy of Boston Dynamics:
Don’t get me wrong — that’s extremely cool technology. And I can think of all kinds of incredible applications even just as it is, let alone what it promises for the future.
But it also gives me the heebie-jeebies watching it move.
Jim Downey
Filed under: Science, Science Fiction, tech, YouTube | Tags: blogging, jim downey, KWMU, Lihong Wang, photography, science, Science Fiction, St. Louis Public Radio, technology, Véronique LaCapra, video, Washington University, www youtube
Watch a laser beam bounce:
From the YouTube description:
A video captured by Washington University’s Lihong Wang’s new imaging system, known as “compressed ultrafast photography,” shows a laser pulse propagating in air and being reflected from a mirror. The movie is slowed down 10 billion times to make it visible to the human eye. (Video courtesy of Washington University in St. Louis)
A good article explaining this new technology is here:
New Ultrafast Camera Invented At Washington University Could Help Turn Science Fiction Into Reality
Very cool. Take-away quote:
Wang’s new technology improves on previous ultrafast cameras in two important ways.
Up until now, streak cameras could only take a one-dimensional snapshot ― think of it like trying to take a picture of something flying by really fast behind a vertical slit.
And the fastest cameras had to have an external light source to work.
Wang’s technique doesn’t need special lighting, and it produces two-dimensional images ― more like a regular photograph ― but at a rate of one every 10 trillionths of a second.
Damn, that’s FAST.
Jim Downey
Filed under: Amazon, Arthur C. Clarke, Brave New World, Connections, Feedback, H. G. Wells, Heinlein, Isaac Asimov, Mark Twain, movies, Paleo-Future, Predictions, Robert A. Heinlein, Science, Science Fiction, Society, Space, tech, Wales, Writing stuff | Tags: 2001: A Space Odyssey, Aberystwyth University, Aeon magazine, Amazon, Arthur C. Clarke, blogging, Communion of Dreams, feedback, futurism, H.G. Wells, Isaac Asimov, Iwan Rhys Morus, jim downey, Kindle, literature, movies, optimism, paleo-future, predictions, reviews, Robert A. Heinlein, science, Science Fiction, space, St. Cybi's Well, technology, Victorian, Wales, writing
A very insightful essay into the role which speculative fiction played in the Victorian era, and how it is still echoed in our fiction today: Future perfect Social progress, high-speed transport and electricity everywhere – how the Victorians invented the future
Here’s an excerpt, but the whole thing is very much worth reading:
It’s easy to pick and choose when reading this sort of future history from the privileged vantage point of now – to celebrate the predictive hits and snigger at the misses (Wells thought air travel would never catch on, for example); but what’s still striking throughout these books is Wells’s insistence that particular technologies (such as the railways) generated particular sorts of society, and that when those technologies were replaced (as railways would be by what he called the ‘motor truck’ and the ‘motor carriage’), society would need replacing also.
It makes sense to read much contemporary futurism in this way too: as a new efflorescence of this Victorian tradition. Until a few years ago, I would have said that this way of using technology to imagine the future was irrecoverably dead, since it depended on our inheritance of a Victorian optimism, expressed as faith in progress and improvement as realisable individual and collective goals. That optimism was still there in the science fiction of Heinlein, Isaac Asimov and Arthur C Clarke, but it fizzled out in the 1960s and ’70s. More recently, we’ve been watching the future in the deadly Terminator franchise, rather than in hopeful film such as 2001: A Space Odyssey (1968). The coupling of technological progress and social evolution that the Victorians inaugurated and took for granted no longer seemed appealing.
I think this is very much why many people find that Communion of Dreams seems to fit in so well with the style of SF from the 1950s and 60s — in spite of being set in a post-apocalyptic world, there is an … optimism … and a sense of wonder which runs through it (which was very deliberate on my part). As noted in a recent Amazon review*:
James Downey has created a novel that compares favorably with the old masters of science fiction.
Our universe would be a better place were it more like the one he has imagined and written about so eloquently.
Anyway, go read the Aeon essay by (who happens to be a professor at Aberystwyth University in Wales — no, I did not make this up).
Jim Downey
*Oh, there’s another new review up I haven’t mentioned.
Filed under: Art, Astronomy, Bad Astronomy, Connections, movies, NPR, Phil Plait, Predictions, Science, Science Fiction, Singularity, Slate, Space, tech, Wired, YouTube | Tags: ALMA, art, astronomy, Bad Astronomy, blogging, Blood Sweat & Tears, Interstellar, jim downey, Kip Thorne, movies, music, NPR, Phil Plait, photography, predictions, reviews, science, Science Fiction, space, technology, video, www youtube
The reviews have been mixed, but one aspect of the new movie Interstellar is pretty cool: the rendering of the black hole depicted in the movie. Even moreso since it is as scientifically accurate as possible, based on close collaboration with noted astrophysicist Kip Thorne:
Still, no one knew exactly what a black hole would look like until they actually built one. Light, temporarily trapped around the black hole, produced an unexpectedly complex fingerprint pattern near the black hole’s shadow. And the glowing accretion disk appeared above the black hole, below the black hole, and in front of it. “I never expected that,” Thorne says. “Eugénie just did the simulations and said, ‘Hey, this is what I got.’ It was just amazing.”
In the end, Nolan got elegant images that advance the story. Thorne got a movie that teaches a mass audience some real, accurate science. But he also got something he didn’t expect: a scientific discovery. “This is our observational data,” he says of the movie’s visualizations. “That’s the way nature behaves. Period.” Thorne says he can get at least two published articles out of it.
The video is remarkable. Seriously. Go watch it.
And in a nice bit of serendipity, there’s another fantastic bit of astrophysics in the news just now: actual images of planetary genesis from ALMA. Check it out:
A new image from ALMA, the Atacama Large Millimeter/submillimeter Array, reveals extraordinarily fine detail that has never been seen before in the planet-forming disc around a young star. ALMA’s new high-resolution capabilities were achieved by spacing the antennas up to 15 kilometers apart [1]. This new result represents an enormous step forward in the understanding of how protoplanetary discs develop and how planets form.
ALMA has obtained its most detailed image yet showing the structure of the disc around HL Tau [2], a million-year-old Sun-like star located approximately 450 light-years from Earth in the constellation of Taurus. The image exceeds all expectations and reveals a series of concentric and bright rings, separated by gaps.
That’s not computer-rendered theory. That’s an actual image, showing the formation of planets around this very young star.
Wow.
Jim Downey
Filed under: Arthur C. Clarke, Connections, Mars, movies, NASA, Paleo-Future, Predictions, Science, Science Fiction, Space, Survival, tech, YouTube | Tags: 2001, 2001: A Space Odyssey, blogging, Irene Klotz, jim downey, Mars, NASA, predictions, science, Science Fiction, space, technology, www youtube
NASA Eyes Crew Deep Sleep Option for Mars Mission
A NASA-backed study explores an innovative way to dramatically cut the cost of a human expedition to Mars — put the crew in stasis.
The deep sleep, called torpor, would reduce astronauts’ metabolic functions with existing medical procedures. Torpor also can occur naturally in cases of hypothermia.
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Economically, the payoff looks impressive. Crews can live inside smaller ships with fewer amenities like galleys, exercise gear and of course water, food and clothing. One design includes a spinning habitat to provide a low-gravity environment to help offset bone and muscle loss.
Hmm … seems that I’ve heard of something like that before …
Jim Downey
*Obviously. Hat tip to ML for the link.





