For those of you who think I'm just pissing around here (does that include me? erm...), I just got an ac calorimetry setup working for the first time (if that means anything to you). I'll spare you the details of what we were measuring, but some of the technical thingummies of getting the damn thing going were rather amusing, for me at least to try figuring them out
We have to measure a tiny tiny signal at a specific frequency, and so any source of noise is very annoying. It turned out that the type of adhesive tape being used to protect the wires was picking up static and turning in to a huge antenna, also making a very good capacitor due to its high dielectric constant! Tracking that down was no end of fun.
Also there seemed to be some weird but very regular modulation of the signal with a period of about 10 minutes. Turns out it was the air conditioning kicking in as the temperature in the room was warmed up by all the pumps, lasers etc.
OK not very sublime stuff, but it's little things like that that make the job so much fun.
Thursday, November 10, 2005
Saturday, November 05, 2005
Thursday, October 27, 2005
How not to behave in public
Last weekend I went to possibly the worst concert of my entire life. It started fine, the setting was a rather delightful restaurant in central osaka in an old wood-beamed building where they regularly have live music by local amateur bands. You can listen and eat at the same time (though I am still having problems with warm beef fat). I was there with some fellow foreigners, a French guy I know who lives in Osaka, and a friend from the UK who just arrived to teach english in Shikoku and was visiting Osaka for the weekend.
It started out fine, with a fairly good if slightly cheesy guitar player, followed by another couple of similar acts, the last of which was a chap in a backward baseball cap and "Thrasher" t-shirt, who played a guitar arrangement of "somewhere over the rainbow" and various beatles songs. So far so inoffensive, we had after all just turned up without knowing what was on programme.
The final act though stole the show, and I mean that in a bad way. It was a young Japanese guy, with fluffy toilet-brush hair, dressed head to toe in beige. He had three chunky Korg synthesisers set up, and from the moment he started playing to the end, almost an hour later I think, it was absolutely impossible to keep a straight face.
You know the "demo" button on keyboards, or the background music on a nintendo game from about 10 years ago, it was like that. Or worse. Think John Shuttleworth, with more self-confidence. I can't really find the words to describe it but lets just say that birdsong sounds were involved at one point. Musical Vogon poetry. Not only this but he was prancing about with grand gestures and an expression of such smug ecstasy on his face that it was utterly impossible, for me at least, and my friend for the UK, to adopt the usual respectful serenity expected during a concert.
I obviously still have a lot to learn from the Japanese, since almost everyone else in the room sat through the whole thing with a look of resigned tolerance on their faces, though near the end there were one or two cracks in the facade. They could clearly see us cracking up, though the man himself was so absorbed in his magnum opus that unfortunately he wasn't put off by our rudeness.
My French friend managed (just) to keep a straight face as well, he can speak Japanese, and knew that the whole evening had been arranged by this performer, and most of the audience were his friends. And he just cares a bit more about not being totally disrespectful in front of a room full of strangers I guess. It didn't help at the end though when he asked the guy if he had a CD, while one of his entourage gave me really odd looks.
We made a swift exit.
It started out fine, with a fairly good if slightly cheesy guitar player, followed by another couple of similar acts, the last of which was a chap in a backward baseball cap and "Thrasher" t-shirt, who played a guitar arrangement of "somewhere over the rainbow" and various beatles songs. So far so inoffensive, we had after all just turned up without knowing what was on programme.
The final act though stole the show, and I mean that in a bad way. It was a young Japanese guy, with fluffy toilet-brush hair, dressed head to toe in beige. He had three chunky Korg synthesisers set up, and from the moment he started playing to the end, almost an hour later I think, it was absolutely impossible to keep a straight face.
You know the "demo" button on keyboards, or the background music on a nintendo game from about 10 years ago, it was like that. Or worse. Think John Shuttleworth, with more self-confidence. I can't really find the words to describe it but lets just say that birdsong sounds were involved at one point. Musical Vogon poetry. Not only this but he was prancing about with grand gestures and an expression of such smug ecstasy on his face that it was utterly impossible, for me at least, and my friend for the UK, to adopt the usual respectful serenity expected during a concert.
I obviously still have a lot to learn from the Japanese, since almost everyone else in the room sat through the whole thing with a look of resigned tolerance on their faces, though near the end there were one or two cracks in the facade. They could clearly see us cracking up, though the man himself was so absorbed in his magnum opus that unfortunately he wasn't put off by our rudeness.
My French friend managed (just) to keep a straight face as well, he can speak Japanese, and knew that the whole evening had been arranged by this performer, and most of the audience were his friends. And he just cares a bit more about not being totally disrespectful in front of a room full of strangers I guess. It didn't help at the end though when he asked the guy if he had a CD, while one of his entourage gave me really odd looks.
We made a swift exit.
Thursday, October 06, 2005
Friday, September 30, 2005
Tuesday, September 27, 2005
Friday, September 16, 2005
Zamami-jima
Mobile phone blogging from the stunning tropical island of Zamami. Went snorkelling round the coral reef and saw colourful fishies like I wold expect in a rich person's aquarium. Sadly phone camera doesn't work underwater, at least not for very long.
Wednesday, September 14, 2005
Okinawa
I've just arrived on the tropical island of okinawa, famous for american occupation and unpleasant battles, along with broiled pig's trotter and peanut tofu. More updates later...
Wednesday, August 24, 2005
Watch out!
I'm not sure what to make of this, but fortunately I deal with teeny weeny pieces of superconductor. Some of my friends like playing with Uranium though.
Pair production in superconductors
Authors: J. E. Hirsch
Comments: better safe than sorry - experimentalists please take note
Subj-class: Superconductivity; Strongly Correlated Electrons
We show that an alternative theory of superconductivity recently proposed (theory of hole superconductivity) leads to the surprising consequence that real electron-positron pair production will occur for superconductors larger than a critical size. We discuss the expected magnitude of the effect and suggest experimental ways to verify it. Urgent attention to the possibility of harmful gamma-radiation being emitted from superconductors out of equilibrium is called for.
cond-mat/0508529
Sunday, August 14, 2005
Europe trip - rundown.
In summary, I had a great time on my trip to Europe. Saw lots of friends, learnt lots of new stuff about physics - I am starting to understand what NMR results mean now!
The conference was a great success, at least for me. I got lots of nice comments about my talk, and the funky animations definitely helped (and I don't mean powerpointish tomfoolery, but proper physics, though I don't know how to post them here).
Not only that but I also got offered a job at A Very Well Known British University, so it's now up to me not to mess that up! Looks like I'll finally be back in blighty after nearly seven years! I hope I will still be able to get the jokes!
The conference was a great success, at least for me. I got lots of nice comments about my talk, and the funky animations definitely helped (and I don't mean powerpointish tomfoolery, but proper physics, though I don't know how to post them here).
Not only that but I also got offered a job at A Very Well Known British University, so it's now up to me not to mess that up! Looks like I'll finally be back in blighty after nearly seven years! I hope I will still be able to get the jokes!
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