The NY Times had an article on bedbugs today which made the “Most Viewed” list. Bedbugs actually disappeared for most of last century, and then reappeared in the 90s.
But bedbugs, despite the ick factor, are clean.
Actually it is safer to say that no one has proved they aren’t, said Jerome Goddard, a Mississippi State entomologist.
But not for lack of trying. South African researchers have fed them blood with the AIDS virus, but the virus died. They have shown that bugs can retain hepatitis B virus for weeks, but when they bite chimpanzees, the infection does not take. Brazilian researchers have come closest, getting bedbugs to transfer the Chagas parasite from a wild mouse to lab mice.
“Someday, somebody may come along with a better experiment,” Dr. Goddard said.
It’s known that language shapes the way people think, but the development of a new form of sign language in Nicaragua has allowed scientists to examine this in a more controlled way. They gave two groups of signers a spatial test. The first group were older, and had learned a less evolved version of the sign language when they were growing up which lacked some spatially-related concepts which developed in the language later on.
Pyers explains, “The first-cohort signers find these tasks challenging because they do not have the language to encode the relevant aspects of the environment that would help them solve the spatial problem.” She added, “[They] did not have a consistent linguistic means to encode ‘left of’.”
This is a fascinating result, especially since the first group of adults were older and had been signing for a longer time. It’s clear evidence that our spatial reasoning skills depend, to an extent, on consistent spatial language. If we lack the right words, our mental abilities are limited in a way that extra life experience can’t fully compensate for. Even 30 years of navigating through the world won’t do the trick. And they may never catch up, even though the language they invented has advanced – after all, some studies with American Sign Language suggest that people who learn spatial terms later on in life never master them.
You come into medicine and science at a time of radical transition. You have met the older doctors and scientists who tell the pollsters that they wouldn’t choose their profession if they were given the choice all over again. But you are the generation that was wise enough to ignore them: for what you are hearing is the pain of people experiencing an utter transformation of their world. Doctors and scientists are now being asked to accept a new understanding of what great medicine requires. It is not just the focus of an individual artisan-specialist, however skilled and caring. And it is not just the discovery of a new drug or operation, however effective it may seem in an isolated trial. Great medicine requires the innovation of entire packages of care—with medicines and technologies and clinicians designed to fit together seamlessly, monitored carefully, adjusted perpetually, and shown to produce ever better service and results for people at the lowest possible cost for society.
Hawkin has written a very accessible article on two ways to time travel (but only into the future, not the past):
To approach the speed of light means circling the Earth pretty fast. Seven times a second. But no matter how much power the train has, it can never quite reach the speed of light, since the laws of physics forbid it. Instead, let’s say it gets close, just shy of that ultimate speed. Now something extraordinary happens. Time starts flowing slowly on board relative to the rest of the world, just like near the black hole, only more so. Everything on the train is in slow motion.
This happens to protect the speed limit, and it’s not hard to see why. Imagine a child running forwards up the train. Her forward speed is added to the speed of the train, so couldn’t she break the speed limit simply by accident? The answer is no. The laws of nature prevent the possibility by slowing down time onboard.
It seems that running barefoot changes the way you run into something that’s more natural and less damaging:
Scientists have found that those who run barefoot, or in minimal footwear, tend to avoid “heel-striking,” and instead land on the ball of the foot or the middle of the foot. In so doing, these runners use the architecture of the foot and leg and some clever Newtonian physics to avoid hurtful and potentially damaging impacts, equivalent to two to three times body weight, that shod heel-strikers repeatedly experience.
I’m pretty focused when it comes to shopping at Costco. I like to buy orange juice and movie vouchers from there. The last time I went, I walked out with a 4-pack of Tropicana and a pack of dried mangoes. The dude at the exit who checks receipts looked up at me and said, “Whoaaaa! Two items! It’s a miracle!!!” which struck me as a little odd, but then I looked around and realized that everyone had a full trolley. And you know those Costco trolleys are jumbo-sized trolleys.
Cal Henderson explains the maths behind his WoW addon, which calculates the “drop chances” of game items. The maths is not particularly complicated, but it’s a novel way of explaining some probability concepts. He uses the 0.01% drop rate of the game’s rarest pet, the Hyacinth Macaw to deliver some of his examples. Incidentally, the Macaw goes for an average price of about 7,000 gold pieces in the auction house, which is about US$50. Apparently, it’s been bought for as much as 75,000 gp (US$500). A real Hyacinth Macaw costs somewhere in the region of $10,000.
The thing which governs this is called Probabilistic Independence – the fact that whether one mob dropped the loot or not, this has no bearing on whether a second mob will drop the loot. By extension, having looted 1000 consecutive mobs which did not drop the loot has no effect on the next mob you loot. If the drop chance is 1 in 100, there will still be a 1 in 100 chance that the next mob you loot will drop the item.
But if you use BunnyHunter and loot 1000 mobs that drop the Azure Whelp [with a 1 in 1000 drop rate], it wont say 100%; it’ll say 63.2%. The reason we can come up with any number at all, is because we can derive the probability that a piece of loot will drop at least once in a given sequence of lootings.
This is a fascinating, wonderful, entertaining presentation about the gaming industry: about the unexpected successes that have come out of it recently (such as Farmville, the Facebook app, which has more user accounts than Twitter, and the Wii Fit, a peripheral which generates a billion bucks for Nintendo), why they were successful, and where gaming will be headed. Well worth the 28 minutes.
So, back to these things. [Shows picture of a lot of different consumer electronic devices.] Now, well you might say that, “Well now wait a minute. Y’know, I’m not sure I’m buying all that authenticity stuff. It may very well be that technology is actually going to fix this through unification because we all know technologies converge.” There’s a bunch of crazy things going on here. But convergence is happening. Facebook is coming to the X-box … there’s gonna be one happy box, ahhh. Just like we used to have it in the old days. Remember when there was one happy box and we made games for it and that’s how it was? And because technological convergence will take us there and all this stuff is right now is just a temporary blip and we’re going to have technological convergence. And I am here to tell you that technological convergence is total bullshit. That is not how the world works. Technology is the opposite. Technologies diverge, they do not converge. They diverge like species in the Galapagos Islands. They branch out and branch out and branch out. Your VCR wasn’t able to record radio programs, and your Tivo can’t record stuff off the internet. I just got a Flip video thing and I’m like, “How do I take pictures?” and they’re like, “No, no, video only.” And I’m like, “Oh, okay.” Because that’s what technologies do – they diverge, they diverge, they diverge. So we’re going to have all this divergence …
And you might say, “Wait, wait, wait a minute. That’s not true: I have an iPhone. I have an iPhone and it’s convergence all over because it’s a phone, it’s a camera, it’s got a zillion little apps, it’s a game thing.” And I’ll say, “Okay you got me.” You got me but only because of the pocket exception. Pockets turn the law of divergence inside out… not the pocket, but the law. And this is not the first time, right? Remember the Swiss Army Knife, right? All the iPhone is is a modern digital Swiss Army Knife, right? And the Swiss Army Knife is really useful in the pocket – look at all that stuff converged in there. But if I got you one for your kitchen, you’s think that was the stupidest thing ever, because it doesn’t fit in your pocket. And this is why everyone hates the iPad. It’s a giant digital Swiss Army Knife, which is just stupid.
Chat Roulette has been getting a lot of coverage lately. There’s also a Tumblr site called Chatroulolz (sometimes NSFW) which is capturing strange pictures from the surreal, weird, but often amusing world of Chat Roulette. Reddit also has their own version.
This concept would have made a great sci-fi story in the past… but now it’s 2010 and it’s real and it’s too late.
It’s worth checking it out for the sheer curiosity factor, but be prepared to see a lot of dicks (in all senses of the word). There’s also a Chat Roulette drinking game. (I notice you have to drink a fair bit if you spot an Aussie on there.)
View from a rocket booster on Discovery
Real-time footage from a camera mounted on Discovery’s rocket booster. The booster is jettisoned after about 90 seconds (by which time the rocket is maybe 30km high), and it floats back down to the ocean.
Sir Patrick Stewart talks about Twitter
I don’t tweet. I’ve never Twittered. And, it’s not that I’m resisting it, but, I see no reason to have it in my life. To reduce life to — how many? — 140… just seems to me to be a little bit simplistic.
But he has a laptop and an iPhone (which he notes is “an extension of whom I am”). And he loves emails. What a legend.
Stop motion flipbook-style video
Another one of those videos where you say, “That’s really cool, but how long did that take to make?!” There were over 6500 frames.
Can hot water freeze more quickly than cold water? Of course, when you pose a question as absurd on its face as that, the answer is going to turn out to be yes.
This phenomenon is called the Mpemba Effect, after the Tanzanian high school student who observed it.
In the demonstration video above, I thought that the near-boiling water froze more rapidly because when it was thrown up in the air, it dispersed into smaller particles of steam or vapour (I’m not sure why this happens, but there are videos showing people emptying containers of boiling water in Antarctica, only to have the water go up in vapour before any of it hits the ground). Despite having a higher initial temperature, these smaller particles are much easier to freeze due to the greater overall surface area to volume ratio. On the other hand, the cold water comes out as one body of water.
While that was probably one contributing factor, the same effect is achieved if you place two containers of hot and cold water into a freezer without disturbing them. So, it turns out that the answer is not quite so simple. Wikipedia says:
According to an article by Monwhea Jeng: “Analysis of the situation is now quite complex, since we are no longer considering a single parameter, but a scalar function, and computational fluid dynamics (CFD) is notoriously difficult.”
This effect is a heat transfer problem, and therefore well suited to be studied from a transport phenomena viewpoint, based on continuum mechanics. When heat transfer is analyzed in terms of partial differential equations, whose solutions depend on a number of conditions, it becomes clear that measuring only a few lumped parameters, such as the water average temperature is generally insufficient to define the system behaviour, since conditions such as geometry, fluid properties and temperature and flow fields play an important role. The counterintuitiveness of the effect, if analyzed only in terms of simplified thermodynamics illustrates the need to include all the relevant variables and use the best available theoretical tools when approaching a physical problem.
The Cetera Algorithm is a sound algorithm that faithfully reproduces 3D positioning with stereo earphones or headphones. Although originally designed for use with hearing aids, if you have some earphones handy, you can hear some sample audio tracks (the barbershop one is great). The 3D positioning is pinpoint sharp and pretty startling. It doesn’t seem to be able to locate sounds in front of you though.
“Current hearing aids are miniature PA systems. They mainly amplify sound,” said Jerry Ruzicka, president, Starkey Labs. “However, while making sound louder, because of their physical presence in the ear canal, they obscure the clues needed by the brain to process sound. The results is that most hearing aids aren’t able to give the brain the data it needs to filter out background noise, to locate where the sound is coming from or to favor one voice over another in a crowded room.”
The algorithm is not new, but this is the first I’ve heard of it. I feel like getting a haircut now.
Recently, there have been a lot of videos showing the relative sizes of interstellar objects like this one, and this one. Documentaries have also made similar videos. There’s even a video which brands itself as the “Ultimate Universe Objects Size Comparison“. Unfortunately, it’s been produced with spelling mistakes and trite comments.
This one, called “The Known Universe” was produced by the American Museum of Natural History (embedded at bottom of post). It’s easily the best one that I’ve seen. But can anybody explain to me why the image of the “galaxies we have mapped so far” covers two conic areas, instead of a more even distribution?
These renderings remind of a poster I had on my wall as a kid. When I was really young, my dad used to subscribe to National Geographic, and the issues often came with nice glossy posters of various things. One of the posters, published in 1983, was entitled “Journey into the Universe Through Time and Space” and dad stuck it on my bedroom wall. I loved that poster. It showed a 3D depiction of our inner solar system, and then zoomed out by orders of magnitude to show our local group of stars, then our galaxy, then our local group of galaxies, our supercluster of galaxies, and then the known universe projected on a 2D plane. I remember staring at it, being amazed, and trying to imagine the sheer scale of it all.
Nat Geo has since produced an updated poster called The Universe (which looks fantastic), but I found some people who are selling their copies of the old version that I had. I also had this poster of Earth on my bedroom wall.
My dad was, and still is, an astronomy buff, and those things rubbed off onto me. Even though I was only 4 years old at the time, I vividly remember him taking me outside in 1986 to look at Halley’s Comet through some binoculars. I remember him showing me the landmarks of the night sky – Orion’s Belt, the Southern Cross, Sirius and Canopus (the two brightest stars), Venus (the brightest object in the night sky other than the moon, distinguishable from the stars as an non-twinkling reddish point of light), and the band of haze that stretched across the sky, from horizon to horizon like a cloud: a side-on view of our Milky Way. We used to drive out into the paddocks, far away from the town light, and lie on the car bonnet with binoculars, or set up a telescope in the field, and he’d point out the Pleiades, the Jewel Box, and Jupiter and its moons. He was a pretty hardcore amateur astronomer too. Back in the 80s, without the help of a computer, he’d pore through charts looking for obscure stellar phenomena. He’d calculate where and when they would appear in the sky, and then go out and find them. It was definitely under his influence that I developed my interest in astronomy.
What keeps train wheels on a track? When a train rounds a bend, the outer wheels have to travel a further distance than the inner wheels, and therefore the outer wheels have to spin at a quicker rate to cover that distance than the inner wheels cover. The problem is that pairs of wheels on a train are connected by a solid metal axle, so the wheels can’t spin at different rates. So, how does it work?
The Betamax vs VHS war of our generation is over, with Toshiba bowing out of the race. With HD DVD now effectively obsolete, Sony’s Blu-ray is free to cover the field. Regardless of who turned out to be the loser, I can’t say that I would have felt much sympathy for them. You’d think the industry would’ve learnt from its past mistakes instead of plunging headlong into another winner-take-all hundreds of millions of dollars bet. At least we consumers can now rest easy and only worry about one standard.
A company called Scaled Composites is going to launch, if successful, what would be the first privately-developed manned craft into space on June 21. It’s been solely sponsored by Paul Allen (ex-Microsoft). Although this flight will be done solo, the ship fits three people which makes it eligible to run for the Ansari X-Prize, a US$10m prize to the first team that does what Scaled Composites is doing, but carries three people and performs two successful launches within two weeks with the same ship.
Laputan Logic has had a spate of interesting astronomically related posts recently, such as on the Cassini-Huygens probe which is beaming back some marvellous photos of Saturn and its moons. Saturn has a lot of moons, and some of them are very interesting. (Star Wars fans are always interested to hear about Mimas.)
I’ve also uploaded a small gallery of the astrophotography that Dad’s been taking of the night sky. The photos look best when zoomed in to their normal size.
Another great Wired article. This one’s on autism and prodigious savants. Interesting observations on the link between music and maths, and between tonal languages and perfect pitch (what they call “absolute pitch”). A friend back in high school had perfect pitch – he also got his piano LMus in Year 11 or so. We’d hum notes to him and he’d immediately tell us what note we were humming. He was also an incredible thespian and debater who could come up with intricately structured speeches at the drop of a hat without ever needing palm cards or notes of any kind. There was one occasion, I am told, where, during a play, he had finished reciting a few lines that were in verse/rhyme. There was a mishap backstage, which resulted in a delay in the next actor appearing… so to stall for time and without skipping a beat, he ad libbed a few more lines in verse so much so that the audience didn’t realise that he was actually improvising. Scary stuff. How much normality would you trade for a “dash” of autism?
Fog Screen technology. From what I gather it’s an area with fog particles suspended in a special “laminar” airflow which is non-turbulent and fairly uniform, so much so that you can project an image onto it. The image can be translucent or opaque. Imagine the applications! I can see these things popping up in clubs and bars all over town; curtains; opaque, but insubstantial doors! (Thanks Vic)
Pete sent me an intriguing article about emergent phenomena and agent-based modelling:
“Adding new lanes to a highway often makes rush-hour traffic jams far worse – a result known as Braess’s paradox after the German operations research engineer who discovered it in 1968…”
This paragraph really jumps out at you, it’s a bit of a non-sequitur…
The Prince of Wales recently prompted the Government to launch an independent investigation into the benefits and risks of nanotechnology after he voiced fears that tiny robots could one day reduce the planet to a “grey goo”: http://smh.com.au/articles/2003/06/25/1056449287990.html
The reference to the Prince of Wales is over a fear of grey goo instilled into him by dodgy environmentalists. Read a Telegraph article where the heir to the British throne wants to start an inquiry about the dangers of nanotechnology.
Amusing – US troops are placing chicken coops atop their hummers and using chickens as chemical detectors. And it’s an article from Time, not The Onion.
Wired magazine article on the Bionic Eye. A machine physically wired into a human’s brain, incredible. While I was reading this article I kept asking myself whether this was perhaps a fictional piece of work – a sci-fi author’s vision of the future… but with time, it gradually sank in that this was not fiction, this was reality. It’s pretty surreal. Actually, this month’s issue of Wired has a bunch of interesting articles, have a read.
Do you live in a part of the world not saturated by light pollution such that you can actually see stars at night? Heavens Above is a site that helps you watch satellites go overhead at night. The ISS is probably the easiest to track. It’s big and it’s bright.
“With a pill called Modafinil, you can go 40 hours without sleep.” The ramifications are astounding.
But then Edgar drops the bomb.
“The next generation of wake-performing therapeutics will be more effective. You’ll be able to stay awake for X amount of time and not add sleep debt. Ideally, it means being able to be up all day, all night, and all the next day and not have incremental increase in sleepiness or in sleep debt. It would be medication that gives you an interest-free loan.
“It could change the world. A complete paradigm shift. I’m not trying to plug my company. But we are in the forefront. We could see this being a reality, starting to become available, in about five years.”
Medical science is beginning to enter the realm of what was sci-fi only last decade.
In 1931, the Czech-born mathematician Kurt Gödel demonstrated that within any given branch of mathematics, there would always be some propositions that couldn’t be proven either true or false using the rules and axioms … of that mathematical branch itself. You might be able to prove every conceivable statement about numbers within a system by going outside the system in order to come up with new rules an axioms, but by doing so you’ll only create a larger system with its own unprovable statements. The implication is that all logical system of any complexity are, by definition, incomplete; each of them contains, at any given time, more true statements than it can possibly prove according to its own defining set of rules.
Gödel’s Theorem has been used to argue that a computer can never be as smart as a human being because the extent of its knowledge is limited by a fixed set of axioms, whereas people can discover unexpected truths … It plays a part in modern linguistic theories, which emphasize the power of language to come up with new ways to express ideas. And it has been taken to imply that you’ll never entirely understand yourself, since your mind, like any other closed system, can only be sure of what it knows about itself by relying on what it knows about itself.
I think the start of December is a good time for a road trip to South Australia: Solar Eclipse. Time to make plans. Unfortunately it’s not the optimal eclipse to see (2 mins of totality, and during dusk in Australia), but it’s an eclipse nonetheless. More information.
A large site regarding cloning, and all the opinions surrounding it. I believe human cloning (as opposed to therapeutic cloning) is not a good thing, and should be outlawed. There are valid reasons wither way, but I think that the issue of cloning “devaluing” human lives (as an irreplaceable resource) is a big reason why it should not occur.
“This web site provides browsers with images and information from one of the world’s largest collection of well-preserved, sectioned and stained brains of mammals. Viewers can see and download photographs of brains of over 100 different species of mammals (including humans) representing 17 mammalian orders.”
New Scientist: Academic prowess seems to be linked to genes. IQ is hereditary? I can believe that. Physical stature tends to be hereditary, so why not intelligence (in an academic, IQ, sense)? Sure, environment affects development in both, but genes still play some sort of role.
I came across an interesting map that tracks the paths of solar eclipses (240kB) that will happen over the next couple of decades. There’s one in South Australia in December 2002. Dad and I are planning to take a trip to SA to watch it next year. A solar eclipse is something I just have to experience at least once in my life.
This guy wants to paint a big red dot onto the moon by shining millions of laser pointers at it. The web site calls upon people in America to aim their pointers at the moon for a five minute period. Unfortunately, the guy’s right when he said that he is not a scientist. While laser light does stay coherent and is highly directable, the light still attenuates – especially through the earth’s atmosphere. Strictly speaking, although the light never really becomes “invisible”, it does diminish in intensity out of the range of human sight – invisible to us, in other words. Most household laser pointers have a visible range of, at most, a couple kilometres. The moon is a fair bit further than that. Additionally, the area of the moon that would have to be lit up to be visible to the human eye would be impractically large. I think in Australia, there is also some law that prohibits general-use laser pointers over a certain power (1 milliwatt I think). The US probably has similar laws relating to safety regulations and lasers. It’s a quaint sentiment overall, but one unlikely to work.
Ever wondered how anti-buffer-underrun technologies like JustLink and BurnProof work? Quite logical, really. Apparently the second generation of these technologies is meant to leave a zero-width gap upon burn resumption (after a buffer gets too low).
You know how some watches have glow-in-the-dark hands and dials? Until recently, watch companies have been using fluorescent paint mixed with radioactive Tritium. (And before that, Radium, until they found it wasn’t too good for one’s health.) Watches that have tritium in them are marked with two “T”s on the dial. Read about it. Tritium, as a pure beta-emitter does not have very much penetrating power and thus is not a health threat. However, Tritium does have half-life that means its effectiveness in making the paint glow decreases over time. Companies like Omega now use other non-radioactive compounds which do not degrade over time.
Tonight, all over Australia, Aussies will be able to see the longest lunar eclipse to occur in around 150 years. Starting about 10pm tonight, EST, the Earth’s shadow will begin to eat the moon, before turning it a blood red (caused by light refracted by the earth’s atmosphere) for a full 100 minutes. Should be over by 2am tomorrow. I’m taking photos. The next time an eclipse this long will happen will be next millennium
While we’re on the topic of the heavens, here’s a page that explains Why is the sky dark at night? The answer is not as obvious, from a scientific point of view, as you think.
In 1826, the astronomer Heinrich Olbers asked, “Why is the sky dark at night?” By his time, physicists had learned enough to realize that, in a stable, infinite universe with an even distribution of stars, the entire universe should gradually heat up.
Think about it — if there are stars generating energy throughout the universe (energy sources), and if there is no way ultimately to dispose of that energy (energy sinks), then all the objects in the universe must rise in temperature, in time achieving the temperature of the stars themselves.
Of the total participants in the survey 43% were male and 57% female. The overall average sleep over 24 hours was 8 hours 1 minute. Men, on average slept for 7 hours and 59 minutes while women slept, on average, 8 hours and 3 minutes. According to the survey, Northern Territorians get the most sleep (8 hrs 16 mins) matched at the other end of the country by Tasmanians who come close (8 hrs 14 mins) and South Australians (8 hrs 10 mins). Those in the ACT, Queensland and NSW all get less than 8 hours (7 hrs 57 mins; 7 hrs 56 mins; 7 hrs 58 mins) West Australians (8 hrs 2 mins) and Victorians (8 hrs 5 mins) are closest to the overall average. Of course averages are only averages. (A person with their head in the oven and their feet in the freezer could still overall have an ‘average’ body temperature). I averaged about 6 hours a night including naps on the train.
This is an interesting article on sleep – always a fascinating topic. It it it links to this site, which is researching sleep and getting people to submit to them a “sleep diary”. Also on that site is “40 facts about sleep”, including things like: the World Record for staying awake is over 18 days (during which the person experienced hallucinations etc.) and going 17 hours without sleep affects you the same way as having a 0.05 blood alcohol content (hey that’s me today… woke at 6am, drove home at 10.30pm). Really interesting.
This comes from an article where scientists are culturing neurons and recording and analysing the signals they generate. It’s a pretty incredible statistic:
In the meantime, his virtual-rat project faces a number of technical challenges, such as how exactly he’s going to pull patterns out of data streaming in from his dish of neurons at 2.3 Mbytes per second, per channel – enough to max out a multigig hard disk in one afternoon. If you were using the same technology to record input from every neuron in a human brain, you’d get 150 million Gbytes of data per minute – enough to fill a 194-mile-high stack of CD-ROMs in 60 seconds.
Fluorescent Multi-layered Disc ROMS (FMD-ROMs) promise to hold up to 140 GB of data onboard a 10-layered disc that looks like a transparent CD. Second and third generations of these technologies are slated to hold up to a spanking Terabyte of data. This company developed the technology. Yahoo article.
Here’s a very interesting read in Wired. It’s about a cybernetics experiment, attaching an implant to a nerve bundle which records and can “play back” nerve signals. The theory is interesting – if you play back “artificial” electrical impulses, will the brain interpret them in the same way? Will you be able to transmit emotions and thoughts through the air like we do with data nowadays? Later in the article it starts to get philosophical about a society of cyborgs. Now that to me is just plain scary. Not only because he talks like a science-fiction writer would in a novel, but because he has the scientific knowledge that makes such a scenario a possibility, and not just a dream (or nightmare, depending on your point of view). I mean, scientists just discovered a chemical or gene that inhibits neural re-growth (like how your spine will not regenerate itself if broken). They’ve managed to re-enable it, and consequently, spines in lab rats have reformed and restored motor capabilities. Incredible stuff. However, when you move out of the realm of medical applications (like injury recovery) and into worlds where speech is almost obsolete, that gets worrying. Or am I just old-fashioned, already? What’s your take on the article? How would a society of cyborgs make you feel?
NASA’s Mars Polar Lander appears to be uncontactable now. Another fault regarding Mars-bound craft? (the last was the Climate Orbiter which was “lost”). I wonder if SGI is regretting their attempts to up-play the importance of their role in the Polar Lander mission. Even though SGI computers probably weren’t controlling the navigation stuff, it still seems to give them bad publicity :).
Time has a front page story on laser-corrective surgery for the eye. Sounds a lot like a lottery. 70% get near perfect vision, but that’s 3 people in 10 which don’t. Psychologically, 30% feels very threatening. But medical procedures get better in time, and in a decade, it’s reckoned the sucess rate will move to 90%. It’s a gamble, either way, and the stakes are pretty damn high (your lifetime’s eyesight and the $5000 it takes to get the surgery done… quite steep for a 15 minute procedure).
There’s this columnist in Tuesday’s Sydney Morning Herald called Graham Phillipson. He isn’t the most insightful of people, and most of his columns don’t go anywhere. Among his past columns, he’s cited how Linux will go nowhere (a view which he later retracted, a few months down the track). Last Tuesday he wrote about AI. He reckons there will be Turing level AI in 20 years. He reckons that there will be 2 sentient species on this planet. Then he launches into a melodramatic spiel on how “There exists a very real possibility that human supremacy on this planet – and perhaps the universe, given the lack of proof of the existence of life anywhere else – will come to an end, and that the machine age will replace the organic age.” I’m surprised he didn’t mention The Matrix. I don’t think he understands the complexities of intelligence. As far as sentience goes, how are you going to make a computer self-aware? Computers aren’t dynamic. They are quite specialised. One human can perform many tasks, but a machine can’t. You know Robocup? Where they use those $2000 Japanese Aibo robotic dogs to play a soccer game? They estimate it will take 50 more years to create a team of robots that will be able to play a real game of soccer against a human team. And this is still far from achieving real Turing-level AI. 20 years? I don’t think so, Phillipson.
It’s stuff like this that really gets everyone excited. Moller International is a firm that are developing what they’ve called the Skycar, a vehicle capable of VTOL (vert takeoff and landing, like Harrier Jets – in fact it’s basically a mini Harrier). The thing is, it’s not something that’s decades and decades off. They plan to have it on the market within 5 years, and have working prototypes.
Their 4-seater model, the M400 is powered by 8 engines (some redundant), 3 computers (2 redundant), has a range of over 1000km and top speed of over 600km/h. It takes regular unleaded fuel (car fuel) and will have an initial price tag of US $1 million. But once the vehicle hits mass production, the price is slated to drop to about US $60,000, which is reasonable. Right now, the thing can only be flown by licensed pilots. Nonetheless, it’s exciting stuff.
In typical geek fashion I caught the eclipse over RealVideo. Very nice to watch… the connection cut off about 10 seconds after totality, and i spent about 2 minutes trying to reconnect (friggin Net) but the connection came back and i got the last 10 seconds. It was linked to audio and it was funny hearing the crowd gasp, go silent and cheer periodically.
As you know there’s a solar eclipse that passes over most of Europe coming. CNN has coverage of it. I wonder when one will occur over Australian soil? I’ve gotta see a total eclipse at least once in my life. From what I’ve heard, it’s an experience of a lifetime. The stars come out, the temperature drops noticeably, birds stop singing…
The final eclipse this century occurs in about two hours – a partial lunar eclipse. But Sydney in particular always happens to be overcast when there’s a lunar eclipse. This time is no exception – it’s like the fourth time it’s happened.
Literally. This is what it looks like. Our galaxy is going to “collide” (sorta… they’ll actually slide through each other) with another in a couple billion years, but I don’t think we need to worry. The picture was taken by the Hubble Space Telescope.
Slashdot has a nice section called, “Ask Slashdot” where you write in to ask a question and everyone answers. One such question was submitted by someone trying to determine the bandwidth of a nerve cell.
The latest in “hey that’s neat!” geekware. The University of California is enlisting the help of computers across the world in processing radio signals collected by the Arecibo radio telescope that’s part of the SETI program, monitoring the radio waves for any sign of intelligent life. The program will act as a screensaver, downloading raw data from Arecibo to a computer, and as your computer analyses the data, a frequency graph is displayed. Allegedly, a quarter million people have already signed up for it. Go here to find out more.
Wow are people that paranoid about the millennium bug? I guess so. The latest objects to have been deemed “Y2K Compliant” are a bread slicer, and a can opener. Uhm. See Sanyo for details.
The Bread Slicer that won’t spontaneously combust come New Year’s Day, 2000
This news is a little old, but there’s this article on CNN.com that talks about how the USS are going to be setting up a LAN on the International Space Station. What’s interesting is that they’re not using any custom built stuff. No, just Windows NT Server and… Windows 95?? While the ISS shouldn’t crash, Win95 certainly will. At least they’re using UNIX based systems to run ths Station.
To that end, the U.S. portion of the space station’s LAN will be equipped with four IBM ThinkPad 760 laptops: three clients running Windows 95 and one NT server.
“It’s a little less power than I would have liked, but it will do,” Woodbury says. “We’re only talking five clients when [everything is complete,] not like most systems with hundreds of users.”
Seems like today marks the last annular (not a total, but “98% total”) solar eclipse this century. It’s happening in Australia, albeit all the way over in Perth. Read about it. I would really like to see just one solar eclipse in my lifetime…
I wasn’t happy that I missed the Leonid Meteor showers due to the clouds. Apparently someone in Perth stayed up outside to watch it (where it was reputed to be cloud-free), but it ended up raining at 2am, which is even worse. Anyway, at December 13, the peak of another meteor shower is forecasted to take place. Less spectacular, but 120 meteors per hour are predicted, nonetheless (compared to 600/hour of the Leonid one). Look around the Gemini constellation during the night of Dec 13 or early morning of Dec 14. I’m not sure about these dates – I think they are American, but I’m sure there’ll be something in the papers about it. More info here if you’re interested.
This NASA Site, Space Science News, is also a brilliant site if you happen to be interested in astronomy as I am (but who isn’t at least a little bit interested?).
In the papers yesterday, it was reported that scientists discovered a diamond the size of the earth only a matter of 17 light years away. I think they said it was formed after a star collapsed to become a white dwarf, and the carbon the star contained was compressed to the crystalline structure of diamond (giant covalent network solid :). Well, Arthur C. Clarke was sort of a visionary – his 2001 series mentioned Jupiter having a core of diamond. This is the next best thing I guess :). BTW, the gravity on a white star is heaps strong (another understatement), so it’s near impossible to land on it… that’s assuming you can actually reach a place 17 light years distant, of course.
Wow. CNN’s news network is just so much larger than any Aussie network… Anyway scientists found an explosion that occurred 12 billion light years away (hence 12 billion years ago)…
Astronomers are mystified by the most powerful explosion ever witnessed, an enormous burst of gamma ray energy 12 billion light years from Earth that in one second released almost as much energy as all the stars of the universe.
and…
Woosley said the energy released was equal to about 5 billion supernovae, the explosion of dying stars that, until this explosion, had provided the most powerful documented sudden releases of energy.
In visible light alone, Woosley said, the gamma ray burst energy was equal to about 1,000 supernovae. By some calculations, the gamma ray burst release equaled as much energy in one second as all of the 10 billion trillion stars in the universe combined.
Woosley said it is difficult to relate the power in common terms.
For instance, he said, if all of the nuclear weapons ever made were exploded at once, the energy released would equal about 1/100,000 of a second of the energy from Earth’s sun. Yet over its 10 billion-year history, Woosley said, the sun will produce only about 1 percent of the energy of the explosion. [Source: CNN.com]
Link here. That is an awesome amount of energy… and “awesome” is an awesome understatement… it’s bloody well ludricrously unimaginable.
7:38pm 
It seems that making buying decisions when shopping is 
