Archive for the ‘Technology’ Category

Nanotech in the time of Christ

Friday, January 11th, 02008

Wired’s Blog has a nifty piece on the two millennia old Demascus steel process replete with quotes from a Nobel laureate and Neal Stephenson:

Damascus swords — sharp enough to slice a falling piece of silk in half, strong enough to split stones without dulling — owe their legendary qualities to carbon nanotubes, says chemist and Nobel laureate Robert Curl.

The blades used so-called wootz steel, smelted with a technique developed 2000 years ago in India, where craftsmen added wood and other organic debris to their furnaces. The resulting carbon-laced steel, hard but flexible, was soon celebrated across the ancient world.

Lodestone unloads a new surprise

Thursday, December 27th, 02007

We have been researching long lasting magnetic properties for use in the Clock of the Long Now. Magnetite or lodestone is a naturally occurring magnetic material that has been known for at least two millennia. These materials have held their magnetism even over geologic time scales which makes them interesting for potential use in the Clock. We could potentially use them for actuating/holding without touching thus eliminating wear. I just came across this article on a new property some nano-tech engineers came across when they super cooled magnetite and made it change states into a conductor. I like that such an old material is finding new use in the nano-tech world…

With engineers looking to exploit novel electronic materials for next-generation computers and hard drives, phase transitions between insulating and conducting states have become an increasingly hot research topic in physics and materials science in recent years.

The debate about the causes and specifics of magnetite’s temperature-driven phase change has simmered much longer. Natelson said physicists have long sparred about the possible underlying physical and electronic causes of the phase transition. The discovery of this new voltage-driven switching provides new clues, but more research is still needed, he said.

“The effect we discovered probably wasn’t noticed in the past because nanotechnology is only now making it possible to prepare the electrodes, nanoparticles, and thin films required for study with the precision necessary to document the effect,” he said.

Foucault and the Eclipse

Tuesday, December 18th, 02007

Over 50 years ago the French scientist Allais observed:

During the total eclipses of the sun on June 30, 1954, and October 22, 1959, quite analogous deviations of the plane of oscillation of the paraconical pendulum were observed…” - Maurice Allais, 1988 Nobel autobiographical lecture.

And back in 01999 NASA reproduced the experiment and the effect during the total eclipse that year at multiple Foucault pendulums. I have been following this since learning of Allais’ original claim when I started working with Danny Hillis on the design of the 10,000 Year Clock. It seemed to me it might lend itself to a way for the Clock to mechanically record eclipses as they occur through the centuries and millennia. (One of my favorite Long Nowish publications is the 5 millennia Canon of Solar Eclipses [NASA page]) Unfortunately I cannot find much follow up to the 01999 experiment (any links appreciated). It would be very fun to build a device that capitalized on the effect as part of a 10,000 Clock.

Pioneer Anomaly

Tuesday, December 11th, 02007

I have been following this interesting space craft-gone-long-term-science experiment for a while. Since being launched 1972 and 1973 the Pioneer 10 & 11 doppler based location measurements have drifted off their predicted paths . This is known as the Pioneer Anomaly and may tell us something new about physics and gravity once understood. There are some recent efforts to understand this anomaly with terrestrial based processing power (also see note below on the file format issue), and some have discussed a whole new mission around solving it. Some more links below…

UPDATE:  Looks like Turyshev’s data has yielded some interesting results that blames the uneven heating of the spacecraft for it’s drift off course.

Whole Earth Comes Into Focus

Friday, December 7th, 02007

 Our own Stewart Brand has an essay in the current issue of Nature (subscription required) on integrating two disparate disciplines in order to solve our worlds largest problems.

To understand how our planet uses energy, we must integrate genetic data from microbial studies with satellite views of our planet.

Two vastly different but complementary projects could transform our understanding of Earth. The long-standing mystery of how microbes run the world is closer to being solved, thanks to metagenomics — the DNA sequencing of whole populations of microbial life.

the small-but-growing virtual here

Friday, November 23rd, 02007

Alexa.com allows users to compare traffic to different websites through time according to reach, rank, and page views and using various levels of magnification. It’s fascinating to compare not only the quantity of traffic, but the shape of growth curves. For example, although Facebook is still slightly behind MySpace in terms reach (though it appears to have pulled ahead in rank and page views on November 11th of this year), Facebook exhibits more of an exponential curve whereas MySpace exhibits more of a linear one, enabling predictions about when the former was destined to surpass the latter.

Alexa.com

And although the data only goes back to slightly before 02000, this small virtual here is growing…

Predictions & Prescriptions

Wednesday, November 21st, 02007

Good Magazine ran an interview recently with a man they call The New Nostradamus. Bruce Bueno de Mesquita uses a mathematical model that is based entirely on game theory to predict the outcomes of political conflicts. He takes a very literal interpretation of the phrase “political science” and focuses his analysis strictly on issues of strategic interest, ignoring any cultural or historical aspects of the parties involved. He believes that the theory of rational choice can accurately predict the actions of any political actors as long as the data underpinning the determination of interests are correct. An analysis of his model’s predictive abilities done by the CIA found it to be accurate 90 percent of the time.

Bruce Bueno de Mesquita

 

In the article a few of his predictions are discussed, but what is interesting is that he also makes a number of prescriptions. In fact, while there is a list at the end of the interview describing some of his accurate predictions, the discussion with him fails to clearly separate predictions from prescriptions. In the interview, he proposes a solution to the Israeli-Palestinian conflict and criticizes the outcome of negotiations with Kim Jong-Il of North Korea for not conforming to his model.

Perhaps not coincidentally, the recent agreement that the United States reached with the government of Pyongyang closely resembles the one that Bueno de Mesquita’s model suggested: Kim agrees to dismantle his existing nuclear weapons but not his existing nuclear capability. “He puts it in mothballs with IAEA (International Atomic Energy Agency) inspectors on site 24 hours a day, 365 days a year. And in exchange, we provide him with $1.2 billion a year, which we label ‘foreign aid,’ of course.” The “foreign-aid” figure published in the newspapers was $400 million, which concerns Bueno de Mesquita. “I read that and I said, I hope that’s not the deal because it’s not enough money. He needs $1.2 billion, approximately, to sustain the loyalty of his cronies in the military and so forth. It’s unpleasant, this is a nasty man, but we’re stuck with it. The nice part of the deal is that it’s self-enforcing. Each side has a reason to credibly commit to their part of the deal.”

It would appear that what he has actually developed is a highly sophisticated system of conflict mediation. His model assumes that people are selfishly rational and always gravitate toward very predictable terms in an agreement. It would be very interesting to show these predicted outcomes to two negotiating parties at the outset of their talks. Would they get to the same results faster?

Bueno de Mesquita acknowledges the power of what he is able to do with his work, which seems to play a big role in his approach. He will not call elections that he claims to know the outcome for because he does not want to influence them and he will not help organizations affect or manipulate government policy. Clearly, predicting the future is a complicated and controversial venture. It toys with our sense of continuity and our theories of causality, let alone the concept of free-will. It also seems that as people get better at it, we may be raising questions faster than we can answer them.

LongPen makes short work of distance

Tuesday, November 20th, 02007

kiosk-31.jpg

Author Margaret Atwood, perhaps best known for the near-future fable The Handmaid’s Tale, has invented a device called LongPen which allows writers to sign their works at a distance, replicating their hand movements.

Says Atwood:

It is the world’s first long-distance, real-time signing and handwriting device.

In other words, the LongPen is not an Autopen, which signs your name over and over without your presence being required. Instead, the LongPen does whatever you have just done at your end, including ‘Happy Birthday Marge’ and a picture of a pussycat — making whatever marks you have just made, in the order and with the pressure you have made them. (The signature is a legal one - which LongPen has just had reconfirmed by an expert in this field.)

The LongPen is known in tech circles as a ‘disruptive technology’, which means - I’m told - that it came out of nowhere, was not anticipated, is not an enhancement of a pre-existing technology, and will radically change how things are done. Author signings are just a small part of the picture!

The product’s website keeps a running tally of the carbon saved by authors foregoing air travel to attend book signings (implying that they would otherwise have attended in person, which may or may not be the case). Still, the green credentials of the LongPen seem clear, and some of the possibilities it opens up are kind of intriguing: signing international contracts without flying anywhere; collaboration on tangible artwork; remote tattooing…

It compares interestingly to robotlab’s project The Bible Scribe, blogged here just last week. Put them together and you can shortly look forward to being the proud owner of an autograph signed remotely by your favourite robot author.

Robo-scribe, the future of “hand made”

Wednesday, November 14th, 02007

  The German art group Robotlab has re-purposed an industrial robot to “hand” write a Martin Luther bible.  While in this instance there is not much feeling in the characters, one could easily imagine an algorithm that randomly introduces small errors to make it feel more hand made.  Wouldn’t it be great to be able to order “manuscripts” of your favorite books on demand?

On the 8th day, Venter creates life

Friday, October 19th, 02007

Mycoplasma bacteria

Genes of micro-organisms are being modified to create something new

 

The BBC reports on our upcoming seminar speaker Craig Venter’s recent advances in creating life. Attendees of Juan Enriquez’ illuminating talk “Mapping Life” also heard about this research and Venter’s success in “jump starting” life by injecting DNA from one cell to another.

The plan is to re-synthesise these DNA sequences from simple chemicals, stitch them together and create an artificial organism. Some believe the team may be on the cusp of doing just that. Dr Venter’s work on synthetic life is described by some as “top-down”, meaning that he is taking an existing organism and changing it to create something new.

 

We have abandoned so much of what traditional biology is doing, many biologists view us as heretics” -Steen Rasmussen

 


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