Yeah! This is just the sort of thing I’d hoped that we (human beings) would find soon, in order to strengthen the idea that in looking for forms of life elsewhere, we be not just open to the idea that the basic chemistry for that life may be very different from what we are used to on earth (easier said than done), but that it is maybe even probable that this is what we could find first. Now, given the news today (announced by Felisa Wolfe-Simon and her team in a NASA press conference today and reported on in a paper to appear in Science) we know that it is not just a theoretical construction, but already a reality right here on earth. The researchers have identified a life form with a striking difference. The bacterium (which lives in Mono Lake – see NASA image above right) has DNA (and some other important complex molecules) with a major difference from all other forms we know. phosphorus has been replaced by arsenic!
This works, by the way, because arsenic is in the same chemical family as phosphorus, being directly below it in the periodic table. Note that this is exactly the sort of thing that has been speculated about a lot in the classic days of science/speculative fiction concerned with alien life, remember? :- Silicon based life forms instead of the Carbon based ones that we know and love on earth. Silicon is again in the same column as […] Click to continue reading this post
Some of you will recognize the blue box in the picture on the left that I took recently while travelling. I have two things to mention in connection with it, but first let me mention that it is indeed what you think it is, but not really. In other words, it is in London (Earl’s Court), and it is a classic Police box (well, a modern relaunch), but it is not (as far as I am aware) also a disguised remarkable time machine owned by a somewhat eccentric renegade Time Lord. Ok?
Ok, thing number one. I don’t get the BBC America channel, but they kindly were dumping on to On Demand the episodes of the new season of Dr. Who, with the new writer and the new actor, so one day I thought I’d have a look. Just to get myself annoyed, because (sorry fans of its recent years) over the years I usually get ridiculously annoyed at how utterly stupid the show is, with lots of pointless running, and overacting, and cheap, crappy, silly plots and sets and so forth, and get even more annoyed when I remember it is mostly deliberate – we are supposed to enjoy the hokeyness in the spirit of nostalgia for the time many decades ago when it was on a super low budget but was ahead of its time. And I get more annoyed when I think that people abroad are watching this and thinking it is a prime example of great British television. Then I turn it off and ignore it for a year or two, and then do it all again. So anyway, I did that this time, back in the Spring. And guess what? […] Click to continue reading this post
Ah. Well, I was reserving the title of this post for a followup post to an earlier post about physics research. But, the film I went to last night at the wonderful Vista theatre was so engaging, and so excellently done – on the themes of dreams and memory – that I thought I’d use it.
Christopher Nolan has done it again! Inception (both written and directed by him) is yet another (remember my discussion of the Dark Knight two years back) example that shows that it is possible to make a big budget Summer Blockbuster that does not treat the audience as idiots. It tells you from the opening frames that you’re going to have to pay attention and think during the film, and that interesting ideas and themes are going to be explored, and it certainly lives up to that promise right through to the end. It is thrilling on all sort of levels, and for those who don’t care about ideas, there’s plenty of stuff blowing up and crashing into stuff to keep them happy.
I am going to say absolutely nothing more about it (more or less) since one of the […] Click to continue reading this post
(Well, in the Ion Micrograph category, you understand.)
Sometimes extreme geekery is charming. (As you may know, I do not use the word “geek” lightly.) I spotted this on Phil’s Bad Astronomy Blog. You know what shape it is trying to evoke, I presume. Know also that this structure is 8.8 micro meters across, and that the subject was magnified some 5000 times normal size to make the image. I’ve no idea how they […] Click to continue reading this post
Happy New Year, dear Reader!
Forgive me for starting the year with an article on environmental problems, but it was Isaac Asimov’s birthday (at least the official one) on Saturday (I learned that here), and I found an excellent video of him talking wonderfully about global warming, united world action on such matters, and other issues back in 1988. It is below. I read a ton of Asimov back when I was a teenager. While not the greatest writing in a literary sense, it was full of wonderful ideas and compelling stories, and was quite inspiring for me at the time.
It is a pity that it was yesterday I switched on the little robot I use weekly to help me fight the good fight against dusty floors (see above right; the company that makes them is called iRobot, by the way – hardly any doubt that an Asimov reader was […] Click to continue reading this post
I’ve been wondering why over the last day or two I’ve been getting email about various apocalyptic scenarios. I’ve now figured out why, I think. On Tuesday, several scientists, myself included, played with the idea of how to destroy the earth! Well, it was on the History Channel in an episode of the show the Universe, (it was recorded back in June and July) entitled “Ten Ways to Destroy the Earth”. Of course, these are not scenarios we envision happening any time soon, but rather an excuse to talk about various kinds of science (from spontaneous symmetry breaking and the early universe, through planetary science, solar physics, and of course black holes and more). We list various favourite ways that were chosen to be discussed, and each physicist (although they called me an astrophysicist) picks a favourite. Fun stuff.
I chose putting a huge amount of antimatter at the core of the earth and letting it […] Click to continue reading this post
Forgot to report on this email exchange from last semester:
From one of the staff in the physics office:
Subject: 499 Syllabus
Date: Thu, 09 Jul 2009 14:01:38 -0700
To: Clifford V. Johnson
I was reading the syllabus you sent over for the 499 class. I am not sure if this is a type-o but in the Extra Books section it reads “/Black *_hoes_* and Time Warps: Einstein’s outrageous Legacy/” should it read
“/Black *_holes_* and Time Warps: Einstein’s outrageous Legacy/”.
My response: […] Click to continue reading this post
I’m sitting here recovering from last night’s event (more later), which, when you clear away the details (and the large amount of left over food, huge number of dirty dishes, glasses, pots, pans, etc.), was all about science, filmmaking and the media. There’s something else that is being discussed a lot recently that is about that too.
It seems to be all over the blogosphere (e.g., here), since apparently Lost is a very popular show, and so I’ll mention it here. You can now enroll in Lost University as part of the DVD/Blueray release of Lost’s Season 5. What you’ll be able to do (it says on their website), is enroll and take courses in Psychology, Foreign Language, Jungle Survival, Philosophy, History, and Physics. The Physics part is all about time travel. Classes are being “taught” by real professors. I mean actual people, not characters. I know this since I’m one of these professors.
Who knew I’d end up being faculty at another university teaching such a popular […] Click to continue reading this post
So, apparently there is physics in the upcoming huge film Angels and Demons (and presumably the book). Lots of it. I did not know that until recently. So imagine my surprise a few months ago when I got a message from a producer (Natalie Artin of Prometheus Pictures) of a documentary about it, asking if I’d like to contribute, talking about aspects of the physics.
They wanted me to talk about anti-matter. This is as a result of finding a blog post of mine over on Correlations, entitled “Not Science Fiction”, which starts:
Anti-matter. Seeing the previous word, you immediately glance back at the title, right? Strangely, it has been 80 years since the discovery of anti-matter, and we use it routinely in our technology. Nevertheless, anti-matter is still thought of as something from science fiction (and mostly bad science fiction at that).
It all goes back to one of my favourite theoretical physicists, Paul Dirac, and you might like how he found it (roughly). He essentially did it by […]
I agreed to talk, if I could focus on one of the main issues of my post: That anti-matter is not weird stuff of science fiction, but actual routine science…. so routine that it is used commonly in medical diagnosis, for example. The “P” in PET scans stands for “positron”. The positron is the anti-electron. (The “E” does not […] Click to continue reading this post
Now I’d see this version of Alien Vs Predator:
[…] Click to continue reading this post
Well, I probably am not worthy of the press credentials I was carrying around with me on Wednesday, as several days later I had still not done my “report” on the event. Well, here it is.
I went to a press conference and a symposium that relates directly to the issues I was talking about in my Tuesday post and its comment stream. All the things I was talking about with regards better contact between the science community and the filmmaking community so as to make films (and shows) that better represent science and scientists more accurately through something closer to a collaborative mode were brought up in these meetings and discussions. It was great to see this issue being taken seriously, and a well-meant effort being made. The core of the idea is to set up an office that will coordinate things – acting as a sort of clearing house that will put filmmakers (of all aspects of the process whether screenwriter or director) in touch with willing scientists who can be helpful in various topics. This is the Science and Entertainment Exchange.
A key thing that I have mentioned here many times before is the issue of it being about more than just fact-checking near-completed work. If scientists are involved at […] Click to continue reading this post
I got this cute postcard from the people at Workaholic Productions. (Click for larger view.) You may recall a post I did some time ago about some things I was doing in a demo lab here at USC for a pilot for a new TV show. (Or, you may not. That’s what the archive is for – browse several of the Tales From The Industry” series here.) At the time I did not tell you about the show in detail, since I don’t like to reveal details of show ideas and so forth when things are still in development.
Anyway, the show is done. It’s a pilot, and so with your support, they may well get the go ahead to make more. So if you’re inclined, go and have a look. What is it about? Well, the idea is to start off with some standard (pulp) sci-fi scenario (alien invasion in this case) that you might see in a movie or tv show, and then through the course of the show examine aspects of what you see to investigate the science behind it. They have actual scientists (and engineers, since a lot of can be really about technology) come on and discuss things, explain science, do demonstrations, and so on and so forth.
This particular show, the pilot, has a lot of the standard alien invasion combat weaponry on display – shooting of ray guns, casting of lightning-bolt-like bursts of […] Click to continue reading this post
Sorry. Didn’t mean to cry wolf, but I always think of that great (as in camp and amusing) ending scene when I think of The Fly. The movie, anyway. (That’s in the original 1958 movie version – clip at bottom of this post.) Now there’s an opera! I am not joking. David Cronenberg has teamed with composer Howard Shore to create an opera. (You know the work of both of them rather well, actually, from film work together, and separately – Shore did the wonderful music for films such as The Lord of the Rings trilogy, and Cronenberg the film director needs no introduction.) I love the play on Da Vinci’s iconic drawing for the production’s publicity and so forth. See above right.
The artists are of the opinion (and I agree, in principle) that the themes visited in the story are powerful and resonant enough for an opera. Science, science ethics, new technology, fear of same, mercy killing… and presumably devotion to a cause, […] Click to continue reading this post
I love “do-overs”. Not because I want to change anything in particular about my life, but because they are so rare, and so interesting. On my way to Vancouver on Monday, I got to do one.
We (myself and the other passengers) boarded our flight at Denver. I usually get on the plane early, and so have the change to watch people go through their routines of boarding and all that entails. After that was all, the plane full of passengers waited for the plane to get ready, doors to close, and so forth. It did not happen. After a while, the pilot came on and explained that they were trying to fix the radio, and it would be another half an hour. So we waited. After another long while, the pilot came on and said that they did not expect that the radio would get fixed in a timely manner after all, and so they were going to try something else. We would “de-plane” (a word I hate by the way – what is wrong with the perfectly good word “disembark”?) and all make our way to another gate where eventually another plane would arrive, and we’d take that one. It would be exactly the same type of plane. We would keep our ticket stubs and just re-board an hour and a half later.
I wandered for a bit, found something not too repulsive to nibble on (seems to get harder and harder in some airports), was disappointed by the meagre bookstore once again, and otherwise killed some time. Then the boarding started again. A “do-over”. Everybody would be going back to the same seats, it would be exactly the […] Click to continue reading this post
I spent an awful lot of time as a child and teenager tinkering with various projects. I’d have lots of projects on at any one time, brewing in my head for a while, and making their way to notebooks and scraps of paper, then to elaborate drawings showing the technical details, and ultimately to some sort of realization in the real work, some percentage of the time. In the Summer time, I would probably have one Big Project and that would occupy my thoughts for a great deal of time, and would involve a lot of hiding away doing things. Lots of these projects would involve electronics (increasingly as time went by and I Learned more and my various part time jobs could support more) and there’d be lots of tinkering with all sorts of items, and a constant feature would be the soldering iron, one not so different from the one that you see to the right.
Well, one of the many things I liked about the Iron Man movie (yes, I was right there to […] Click to continue reading this post