Category Archives: Science
Time for math!
I have a special fondness for the month of March. For one thing, it contains the Vernal Equinox — one of my favorite days, because it heralds six months of light. (As a Minnesotan, Spring has much more impact than it did when I lived in Los Angeles.)
March is when the weather elves begin preparing for the April Showers that create May Flowers. It’s when baseball Spring Training is in full swing with the regular season looming (lately, even at the end of the month; this year on the 28th).
It also contains some important birthdays: Albert Einstein (3/14) and Emmy Noether (3/23), to name two, and in their honor I have myriad math posts planned!
Continue reading
11 Comments | tags: 3Blue1Brown, Albert Einstein, complex numbers, Emmy Noether, mathematics, Mathologer, Numberphile, tesseract | posted in Math
On the one hand, a main theme here is theories of consciousness. On the other hand, it’s been almost eight years blogging, and I’ve covered my views pretty well in numerous posts and comment threads. Our understanding of consciousness currently seems stuck pending new discoveries, either in answering hard questions, or in providing entirely new paths.
A while back I determined to step away from debates (even blogs) that center on topics with no resolution. Religion is a big one, but theories of mind is another. Your view depends on your axioms. Unless (or until) science provides objective answers, everyone is just guessing.
But it’s been three-and-a-half years, and, well,… I have some notes…
Continue reading
8 Comments | tags: AI, brain, brain mind problem, chaos theory, Cogito ergo sum, computationalism, computer model, computer program, consciousness, human brain, human consciousness, human mind, information theory, Isaac Asimov, mind, stored program computer, Theory of Consciousness, Von Neumann architecture | posted in Computers, Opinion, Science
Folded into the mixed baklava of my 2018, was a special mathematical bit of honey. With the help of some excellent YouTube videos, the light bulb finally went on for me, and I could see quaternions. Judging by online comments I’ve read, I wasn’t alone in the dark.
There does seem a conceptual stumbling block (I tripped, anyway), but once that’s cleared up, quaternions turn out to be pretty easy to use. Which is cool, because they are very useful if you want to rotate some points in 3D space (a need I’m sure many of have experienced over the years).
The stumbling block has to do with quaternions having not one, not two, but three distinct “imaginary” numbers.
Continue reading
19 Comments | tags: complex numbers, math theory, mathematics, natural numbers, number systems, numbers, octonion, quaternion, real numbers | posted in Math, Sideband
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.
Continue reading
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.
Continue reading
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…
Continue reading
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!
Continue reading
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?
Continue reading
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.
Continue reading
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.
Continue reading
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
Logos con carne 