Well, due to seeing signs that the blog was partially hacked (although not as badly as last time), I decided to do a full upgrade (long overdue) of the blog software. On that score, Asymptotia is now as current as it is possible to be, for a while. Hurrah! I … Click to continue reading this post
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 […] Click to continue reading this post
I like the crooked neck on this device, with a very clever low-cost adjustment to make it that the rotating part is level (cute use of geometry – simply rotate the two obliquely […] Click to continue reading this post
Excellent evening on Wednesday night. As I expected, KC worked her magic and steered the conversation in many interesting directions, with Alan Alda turning out to be – not unexpectedly – quite the character. I suspect that it was recorded (on video) and so I will update this post or do a later post with a pointer to it later. Alda was swamped by people buying his book and getting is signed and so forth at the reception. It was great to see such a good attendance at this Visions and Voices event all about science and the arts – very much in the spirit of what this is all supposed to be about.
Among the many things of note that were said, one thing I liked a lot was the telling by […] Click to continue reading this post
Inside meaning the inner part of the Solar System. Messages meaning the new pictures from MESSENGER spacecraft.
MESSENGER is short for MErcury Surface, Space ENvironment, GEochemistry, and Ranging. Now you and I know that they spent a bit of time coming up with the unpacking of the name, wanting of course to have the name MESSENGER because that’s what the Mercury of mythology was – the messenger of the Gods, among his other duties. Nice. However I’d have been really impressed if they’d managed to call it QUICKSILVER, and found a way to unpack that – any takers?
Anyway, I digress. In more news showing the triumph of the wisdom of relatively cheap unmanned exploratory craft, MESSENGER sent some wonderful pictures of Mercury this week, along with lots of other scientific data that will help us learn a great deal about the innermost planet. Here’s the one that’s been going around a lot (click for impressive larger version):
Image credit to NASA. Caption taken from a space.com article reads: This photo supplied by NASA shows […] Click to continue reading this post
So it is that time. A new semester is upon me, and a totally new course to deliver. Today was my first day back on campus after the break (at least during a regular working day).
Sunday saw me sitting down (in the newly completed study) thinking about how I was going to structure the course. This usually has me sitting with the textbook, a pen, a hand drawn calendar on a big sheet of paper, and a frown on my face trying to figure out roughly what topics I will cover, how many lectures I will devote to each, how many class worksheets (see earlier post) I might have, when the midterms will be, and so forth.
What I am teaching? Why, only one of my most favourite topics to teach in the entire […] Click to continue reading this post
This is a quick note to point you to the Women in Physics conference (aimed primarily at undergraduates) being held at USC again this year. It’s on Saturday and Sunday coming. It looks like another excellent program (see here), so well done to the organizers for keeping going what Amy … Click to continue reading this post
Tomorrow afternoon at 4:00pm there’s be an interesting conversation on campus for sure. It’ll be between the science writer and journalist KC Cole and the actor Alan Alda. He’s such an interesting person, and (among other things) currently presents Scientific American Frontiers.
KC’s always so good at steering these conversations, so while I’ve no idea […] Click to continue reading this post
Yes, it is here…
The Macbook Air. I’ve dreamed about an ultralight Mac for years, and they’ve gone […] Click to continue reading this post
Now have a look at this object (and its enlargement on the right):
What is it? It’s a double Einstein ring! An Einstein ring is formed by gravitational lensing – the bending of light from one object by the gravity of another object – and is typically formed when a distant galaxy lines up with another, closer galaxy. The result is a rather nice ring shape.
To find a double Einstein ring is rare! In fact, this is the first one that’s been announced. Not only is it novel, it can also use used to do a good deal of science, such […] Click to continue reading this post
This is a quick note to let you know that today’s Science Friday will feature the Science Debate 2008 (which has been nicely gathering momentum since I blogged about it): Friday, January 11th, 2008 Hour One- 2pm EDT The Call for A Science Debate “Should the presidential candidates participate in … Click to continue reading this post
Being a loyal fan of Scottish single malt whisky, I never thought I’d be blogging about Irish whiskey, but this is why we get out of bed in the morning – we seek the stuff we can’t guess*.
So I was going to point out to you an amusing distraction. The series of radio ads for Jameson Irish Whiskey that you can listen to here. There’s one featuring a physicist, you see, and a friend of mine sent me the link for that reason**. There’s the idea of attraction, and so gravity is brought in by the ad man trying to use the concept to sell the product, and the physicist is obviously not having it… a short bit of fun play between segments of some program on some station somewhere or another. I can see that they’d work rather well. Have a listen.
That was going to be it, until I found another – real – physics connection. Turns out that Guglielmo Marconi – he of the use of electromagnetic waves for telegraph communication, Nobel prize, and so forth – is the the key to the connection. Do you know what it is?
[…] Click to continue reading this post
… but pass it on a retake!
While quickly building an ad hoc washing line pulley assembly from a bag of hooks, eyes, and pulleys, and a 2×4, I put this together at first (blotted out some background for privacy of myself and neighbours – click for larger view):
Huh. Does not want to hang level. Why? A tenth of a second after the thought, I burst out laughing loudly at my error. Ironic since I love teaching about pulleys in basic physics, and for some reason students are scared of pulleys. (Not as scared as they are of torque (why?), but scared nonetheless. I try to help them overcome those fears.) I made an obvious mistake. (Do you see it?)
[…] Click to continue reading this post
It all began over dinner on Thursday night, before the rains began. Some of us met up at Ciudad (a favourite place of mine to eat in downtown Los Angeles, primarily for the mojitos) and the began to get to know each other in person, as opposed to online. I’m talking about the Correlations bloggers, and members of the team who work on the entire Wired Science website (which is excellent, by the way) with which Correlations is embedded. I met most of the latter group at various KCET events (the first screening of episode 1, the wrap party a few weeks ago I never got around to blogging, etc). This however, was the first time I got to meet Sheril Kirshenbaum, although we’d got to know each other so well online I have to say that it sort of felt as though we’d already met. Co-blogger (and show producer) Damon Gambuto arrived a bit later – I’d met him before at the party. The other bloggers coming from out of town to the meeting, Tara Smith and Michael Tobis, I would meet the next day since Michael’s flight was coming in late, and Tara was not feeling well. Tamsin Gray, being stationed in Antarctica, was not going to attend. Of the show host co-bloggers, Chris Hardwick (who I’d already met at the wrap party) would be there next day too. Ziya Tong was away.
Here’s a shot of some of us chatting at dinner (see also Sheril’s thoughts on this here):
Damon Gambuto is second from left, and there’s Sheril Kirshenbaum and cvj on the right – click for larger view. There’s also Liz on the left, and Philip Dunn in the centre, both from New Media.
The main purpose of all of this from the bloggers perspective was simply to meet and […] Click to continue reading this post
Has the ring of a Harry Potter novel’s title, doesn’t it? Well, it’s about physics. The history of the physics of cold, particularly its extremes. It’s a TV show on PBS’ Nova (based on the Tom Shachtman book of the same title), to appear this week, and it looks rather good! You can see the PBS website for it here. The good news is that this program has been a while in the making, with lots of physicists involved behind the scenes to get it right, so I’ve got my fingers crossed that it will not just be entertainment for the moment, but actually a rather good information resource (as well as being entertaining – the two are not mutually exclusive). It first airs on January 8th and 15th (there are two hours, one on each day). There are preview videos to look at […] Click to continue reading this post
