Category Archives: Science
The previous year was an interesting one for me. Last July marked five years of retirement, which has been great, but part of me misses the high information content and challenges work threw at me daily. I’ve tried to keep busy with my own pursuits, one of which was a temporary obsession with the Kilauea volcano on the Big Island, Hawai‘i.
I wrote about this back in August, just after the (unprecedented) activity subsided. At the time, no one knew if the volcano was just taking a breath, or if the lava flow was really over. At this point we know it was over; there has been no activity since.
For two-and-a-half months, though, it was an impressive display of the undeniable power of Mother Earth and, in particular, her fiery daughter Pele.
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9 Comments | tags: earthquake, fissure 8, fissure vent, Hawaii, Kilauea, lava, magma, Pele, USGS, volcano | posted in Science, Wednesday Wow
Congrats to NASA and the New Horizons team! Their brave space robot reached (the planet) Pluto, delivered awesome goods, and went on to explore a much more distant Kuiper belt object: 2014 MU69 (fondly nicknamed Ultima Thule).
It made the journey safely and sped past its destination (at 14 kilometers per second!) on New Year’s Day. We’ve gotten the first close pictures back of the most distant object ever seen by us denizens of the third big rock out.
It looks like a snowman. A red snowman.
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2 Comments | tags: 2014 MU69, Kuiper belt, NASA, New Horizons, Pluto, Pluto is a planet, snowman, Ultima Thule | posted in Science
For the last week or so, on a physics blog I follow, I’ve been part of a debate about the nature of time. It’s been interesting and fun, but the conversation has reached that point where folks are mainly maintaining their positions, and it seems that the matter has stalled.
Some of the on-going assertions bemused me so much, that I was about to tender one more rebuttal comment… When I remembered what a wiser person, “back in the day” (before the web), said about online debates: State your view. Support it further if you need to address points raised. But once you’ve covered it well enough, just stop. After that, you’re just wasting your time; it’s rare that anyone changes their mind on the internet. Including yours.
Fair enough. I can natter on about it to myself on my own blog, though…
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21 Comments | tags: arrow of time, Carlo Rovelli, chronon, got time, is time fundamental, space-time, spacetime, time, time dilation, time dimension, time-space | posted in Opinion, Science
Infamous Fissure #8!
I’ve been semi-obsessed the last few weeks by the Kilauea volcano on the Big Island of Hawai‘i. Back in early May there was a magnitude 6.9 earthquake in the volcanic system, and then things got interesting (in the curse sense). By late May a fissure in the east rift zone was emitting lava at a rate (100 cubic meters per second) not recorded in our history of recording things like that.
All that lava came from a reservoir — the magma chamber — in the volcano, so Kilauea began experiencing “collapse events” as the summit subsided into the space left by the departed magma. These collapse events resulted in magnitude 5.3 (or so) earthquakes roughly every 32 hours (plus or minus a lot).
And a bunch of us interested parties were online chatting, watching, and waiting for the next collapse event!
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10 Comments | tags: earthquake, fissure 8, fissure vent, Hawaii, Kilauea, lava, magma, Pele, USGS, volcano | posted in Science, Wednesday Wow
Where are all the aliens?
I’ve mentioned the Fermi Paradox here quite a number of times, but I’ve never made it the main topic of a post. Lately I’m becoming more and more convinced our world is facing a Great Filter, and that we may very well be seeing one answer to Mr. Fermi’s interesting paradox.
Which is a response to the Drake Equation, which I have made the topic of a post.
Essentially, the Drake Equation attempts to estimate the number of intelligent space-faring species in a galaxy and, by most accounts, comes up with a number noticeably larger than one. The Fermi Paradox says: Okay Mr. Drake… if so… where are all the aliens?
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5 Comments | tags: Anthony Bourdain, Drake Equation, Fermi Paradox, Great Filter, Kate Spade, post-empiricism, post-fact, post-reality, post-truth, Weltschmerz | posted in Life, Science
Well, that didn’t take long!
Multiple news sources have reported on a two-year microbiology study out of Rutgers University (Is the five-second rule real?). The upshot is: Yes, of course it’s not real.
What strikes me is that anyone actually thought it was real. We (meaning pretty much everyone I ever associated with) always understood it as a bit of obvious irony, a self-serving excuse for eating fallen food. If asked, I would have said one would have to be a real idiot to think it was real.
Well… can’t say I’m surprised.
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9 Comments | tags: Anyone But Trump, basket of deplorables, Clinton for President, complete idiots, deplorables, idiots, James Gleick, stupid, stupid people, stupid stupid stupid, stupidity, time travel, Trump is a loser, Trump is a monster | posted in Science, Society
On the one hand, global climate change is likely to make things very — strictly in the curse sense — “interesting” for the human race as this millennium progresses. The effects already are obvious, visual, striking, and — one would think — undeniable.
Randall Munroe, of xkcd, has created another of his brilliant graphics, this one showing the history of climate change. It’s well-worth checking out (do it now). It makes the point in a visually striking, and — one would think — undeniable way.
On the other hand, it’s very — in the usual sense — “interesting” that we’re here at all.
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3 Comments | tags: carbon, climate change, Cowboys & Aliens, elements, global warming, gold, Jupiter, mitochondria, moon, Saturn, Saturn's Rings, solar eclipse, Sun, uranium, xkcd | posted in Physics
If you’re anything like me, you’ve probably spent a fair amount of time wondering what is the deal with tesseracts? Just exactly what the heck is a “four-dimension cube” anyway? No doubt you’ve stared curiously at one of those 2D images (like the one here) that fakes a 3D image of an attempt to render a 4D tesseract.
Recently I spent a bunch of wetware CPU cycles, and made lots of diagrams, trying to wrap my mind around the idea of a tesseract. I think I made some progress. It was an interesting diversion, and at least I think I understand that image now!
FWIW, here’s a post about what I came up with…
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9 Comments | tags: 3D space, coordinates, cube, dimensions, geometry, line, point, rectangular coordinates, right angle, square, tesseract | posted in Math
To the dismay of physics geeks everywhere, theoretical particle physics struck out at the plate this year. Three swings, three misses. (Well, maybe one wasn’t really a swing. More a taken ball the umpire called a strike.) It was a crushing disappointment for those of us hoping for a rule-change to the game.
On the other hand, cosmology geeks got three recent home runs, so there was victory (with more coming!) for those who peer at the big and distant. On the other other hand, none of those were game-changers either. (They were just, you know, awesome.)
Since I follow both physics and cosmology, win some, lose some.
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8 Comments | tags: ATLAS, CERN, CMS, dark matter, Dawn mission, diphoton bump, experimental physics, gravity wave, higgs boson, IceCube, LIGO, LUX, NASA, neutrinos, New Horizons, new physics, pentaquark, Pluto, Pluto is a planet, sterile neutrinos, supersymmetry, theoretical physics | posted in Physics
In the last quarter of the 19th century — USA-centrically, call it 139 years ago — we began to experience having the sound of strangers’ voices in our lives, even in our homes. Not just voices, but music from concert halls and clubs. And other sounds, too: the clip-clop of horse feet, the slam of a door, a gunshot. Less than 100 years ago, those sounds went electric, and we never looked back.
At the beginning of the 20th century, we started another love affair — this one with moving images on rectangular screens, a dance of light and shadow, windows to imaginary worlds. Or windows to recorded memories or news of distant places. When sound went electric, those moving images took voice and spoke and sang. No one alive in our society today remembers a time when moving images weren’t woven into our lives.
Here, now, into the 21st century, in an age of streaming video and music, from cloud to your pocket device (with its high-resolution display and built-in video camera), I can’t help but be impressed by how far we’ve come.
A long way, indeed.
18 Comments | tags: analog recording, audio recording, digital recording, internet, interweb, iPad, iPod, OnDemand, streaming audio, streaming video, video recording | posted in Books, Computers, Movies, Music, Science, The Interweb, TV
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