vttoth — May 26th, 2010
I don’t think I ever watched the unscrewing of a screw with as much anticipation as last night, staying up way past my bedtime, glued to the BP live stream bringing video from the bottom of the Gulf.
I watched as a robot was struggling to remove a screw by “hand”, and failed. I watched as another robot approached, handing this robot a T-shaped tool that turned out to be a screwdriver of sorts. I watched as this robot used its two manipulator “hands” to position the tool just right, approach the problem screw, and try again. I watched as, every once in a while, the oil plume hit the scene, making everything murky for a while. I watched as the robot finally unscrewed the screw, and I realized that I was holding my breath.
Amidst the environmental tragedy, I continue to remain amazed by the astonishing robotic infrastructure that can operate and carry out complex industrial operations a mile beneath the surface of the sea,
Categories: Environment, Technology |
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vttoth — November 6th, 2009
I just added some new calculators to my ever growing online museum. Two of them are programmables: an Aurora SC-180 and a Casio FX-770P. I also added several non-programmables to the “photo album“: a Btech fx-82LB scientific model (obviously, a Casio clone), a Canon P3-DII, a Cedar CD-420, a Corvus 322 (this is a real vintage machine), a Lloyd’s Accumatic 310 (similar to my first ever calculator), a Sharp EL-531RH, and an Underwood 340 (this is a really ancient machine, printer only, no display). I also added two calculator-like non-calculators: an “RV Special” databank and a handheld Sudoku game.
Categories: Calculators |
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vttoth — November 4th, 2009
Here’s another fine example of a somewhat Orwellian interpretation of Draconian copyright laws: according to Texas Instruments, hacking your own pocket calculator is illegal.
Recently a friend of mine, responding on the bureaucratic nightmare surrounding the H1N1 flu shots, remarked that “it’s enough to turn one into a Republican”. What can I say? Acts like those of Texas Instruments are, on the other hand, enough to turn one into a commie. After all, when corporations treat their own customers as the #1 enemy, what is the customer to think?
Categories: Calculators, Intellectual Property |
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vttoth — August 30th, 2009
I’ve been looking at the Web page of Hungary’s Museum of Electrical Technology. A fascinating site, pity it’s in Hungarian only.
The Museum has many permanent exhibitions, one of which is about the technology of electrical lighting. One of the pictures available online shows some period lighting fixtures.
Period street lighting fixtures
Fixtures like these were still seen on many Budapest streets when I was a child. I don’t know if it’s just me, but I find these lighting fixtures rather unfriendly in appearance, hostile even. It is almost as if their main purpose was not to provide comfort through light, but to intimidate.
Categories: History, Hungary, Technology |
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vttoth — July 21st, 2009
In one of my favorite cartoon series of television, Futurama, there is an aging science professor with many fictitious inventions. One of them is the smelloscope: a device used to detect, amplify, and measure smells.
Except that this device is not fictitious. They might not call it a smelloscope, but CBC News was using it nonetheless to measure that unpleasant consequences of Toronto’s ongoing municipal strike:
Smelloscope in Toronto
Ah, the wonders of modern science. Is there nothing in fiction that does not eventually get turned into reality?
Categories: Technology |
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vttoth — June 29th, 2009
I was watching the noon local newscast and learned that the Wakefield steam train, a popular tourist attraction nearby, is back in service, after it has been shut down in the middle of its track Saturday due to an electrical fault in its engine that could not be repaired right away.
Wait a minute. Steam train? Electric fault?
Categories: Technology, Transportation |
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vttoth — May 31st, 2009
I’ve been learning a lot about Web development these days: Dojo and Ajax, in particular. It’s incredible what you can do in Javascript nowadays, sophisticated desktop applications running inside a Web browser. I am spending a lot of time building a complex prototype application that has many features associated with desktop programs, including graphics, pop-up dialogs, menus, and more.
I’ve also been learning a lot about the intricacies Brans-Dicke gravity and about the parameterized post-Newtonian (PPN) formalism. Brans-Dicke theory is perhaps the simplest modified gravity theory that there is, and I have to explain to someone why the gravity theory that I spend time working on doesn’t quite behave like Brans-Dicke theory. In the process, I find out things about Brans-Dicke theory that I never knew.
And, I’ve also been doing a fair bit of SCPI programming this month. SCPI is a standardized way for computers to talk to measurement instrumentation, and an old program I wrote used to use a non-standard way… not anymore.
Meanwhile, in all the spare time that I’ve left, I’ve been learning Brook+, a supercomputer programming language based on C… that is because my new test machine is a supercomputer, sort of, with its graphics card that doubles as a numeric vector processor capable in theory of up to a trillion single precision floating point instructions per second… and nearly as many in practice, in the test programs that I threw at it.
I’m also learning a little more about the infamous cosmological constant problem (why is the cosmological constant at least over 50 orders magnitude too small but not exactly zero?) and about quantum gravity.
As I said in the subject… busy days. Much more fun though than following the news. Still, I did catch in the news that Susan Boyle lost in Britains Got Talent… only because an amazing dance group won:
Categories: Computers, Culture, Physics, Programming, Technology |
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vttoth — May 2nd, 2009
Rogers is an interesting company. Sometimes, they are super competent. I remember when cable modems were new… I got one fairly early (and still use a cable connection as my backup Internet connection) and whenever I had a technical problem (which was rare) I was immediately able to get competent help on the telephone. Or when a contractor managed to cut our underground cable… Rogers was here almost faster than it would take for the police to arrive. Within half an hour they had a temporary solution rigged, and by the next day, everything was back to normal. They even apologized that they had to unplug us for another few seconds once the underground cable was repaired and reconnected.
Yet at other times, they are just blatantly incompetent. Such as when it took them months to sort out billing issues that only amounted to a few cents in the end.
Or take this past week. I phoned Rogers because I noticed that on CNN, instead of getting stereo audio all I get is the right channel. Perhaps not so much a problem for a news channel, but I am seeing similar problems with other channels, including MuchMusic, where it can be a bit more problematic, for all the obvious reasons. I reported this over a week ago, but no solution yet, not a peep from Rogers.
And then there is this other thing… being a weekend, Rogers is showing a preview of a premium channel, which this weeks happens to be the CBC’s Documentary Channel. So far so good, and I in fact caught a rather interesting program on it, about the history of the East German Trabant automobile and its current fans. Much of the dialog was in German, and it was subtitled. Except that every so often, the subtitles were covered for an extended period of time by a Rogers banner about the preview. Now yes, of course they want us to know that it is a preview and that this channel can be ordered along with many others… but must they demonstrate at the same time just how little they actually care about their viewers?
Not that Rogers is alone in this regard… many channels have picked up the nasty habit of overlaying a rather large, often quite disconcerting banner advertising the next show, for instance. And not infrequently, they do so while subtitles or other important pieces of information would appear there.
Categories: Technology, Television |
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vttoth — March 21st, 2009
I am watching a documentary on BBC World.
BBC World is available here on basic analog cable, which is the only kind of cable I am interested in having in the house. (Mainly, I am put off digital cable because of the need for separate set-top boxes, but DRM also doesn’t help, not to mention the nasty habit of the box to wake up in the middle of the night to perform an OS upgrade, clearly demonstrating that I am not in control of equipment that is in my house.)
However, BBC World is, it appears, a high definition (HD) broadcast, so on analog cable it appears with a black stripe on the top and the bottom of the picture.
This particular documentary, however, was apparently shot in standard definition. So BBC World chose one of three options, each less than perfect: instead of cropping the picture at the top and the bottom, or introducing black stripes on the left and right, they decided to stretch the picture horizontally. Why so many people prefer a distorted picture over black stripes, I have no idea.
But this means that on my standard analog cable, I get a standard definition show that appears at less than standard resolution, vertically compressed, distorted, with unnecessary black stripes at the top and the bottom. Isn’t HD just glorious?
HD madness
Fortunately, as I tend to watch TV on my computer, I always have the option of stretching the video window vertically and get a picture with the correct aspect ratio. This option is not necessarily available on ordinary televisions.
Behind this ridiculousness is the insane decision to change not just the resolution but the aspect ratio of HD broadcasts. Why, you might ask? Very simple. If the aspect ratios were the same, most people could not tell the difference between standard definition and HD even when the broadcast was true HD, which often is not the case (older shows, and even some newer shows, are shot in standard definition.) So how do you convince people to buy HD anyway? By making it apparent that they have a “better” television set because it is wider.
And this has been done before. Back in the 1950s, when movie studios were seriously worried about the competition of television, they changed the aspect ratio of Hollywood movies, intentionally making them incompatible with the standard 4:3 aspect ratio of NTSC/PAL television. What is amazing is how well they managed to convince the public that a wider picture is better, providing yet another example of just how easy it is to manipulate people.
Categories: Technology, Television |
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vttoth — February 19th, 2009
When the Canadian do-not-call list was brought into existence, I dutifully registered my two landline telephone numbers. Little did I know that the list is available to anyone (including foreign operators who are not subject to Canadian do-not-call legislation) for a few dollars. I have not checked (stupid mistake!) only naively assumed that the list will be implemented properly, meaning that the government will offer a means for operators to submit their list of numbers for do-not-call verification. I never expected that the do-not-call list itself will be made available in its entirety. On the odd chance that I know personally some of the people behind this lousy implementation, I’ll refrain from using stronger words but… this really wasn’t a very smart thing to do, was it.
Fortunately, I never registered our cell phones. And I don’t think I will. I doubt the do-not-call list will stop fraudulent operators from trying to tell us about our vehicle warranties or Florida vacations and why help them by making our numbers readily available in the form of an easy-to-purchase, government approved list?
Categories: Canada, Technology |
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