MetaFilter posts tagged with technology and Science

Britain Can Make It!

Miko — Wed, 04 Nov 2009 15:53:28 -0800

Making the Modern World presents a set of twisty little passages through the history of science and invention, from the eighteenth century to the contemporary era, brought to you by the UK's Science Museum.

The Wisdom of Salmon

Rumple — Thu, 24 Sep 2009 09:33:25 -0800

Functional MRI (fMRI) is a widely used technique of brain imaging in the cognitive sciences, allowing researchers to visualize what part of the brain is responding to certain stimuli, resulting in striking images of live brains. These days, fMRI is seeing more non-research use, such as forming the basis of controversial new lie detectors. Craig Bennett, a postdoctoral researcher at UCSB, submitted a whole Atlantic salmon to fMRI analysis, and found that this fish could apparently detect, and respond to, the the emotional state of human beings (poster). Remarkable science, especially considering the salmon was dead at the time. Bennett's paper is an example of voodoo correlation in brain imaging studies, wherein some false positives cannot be statistically removed without removing real data as well. Basically, low probability events will occur if enough data are generated - and fMRI generates enormous amounts of data: "your average fMRI brain scan analysis can involve 40,000 comparisons, so even if there's nothing going on, some bits of the brain are going to seem active just through falsely detecting noise and measurement error as real effect." The issue seems to be that better data filtering and better reporting of raw and corrected data are needed in this field - less sexy a conclusion than emotional dead salmon, yet an important cautionary tale that the author found surprisingly difficult to get published, or even to present at a conference. [via John Hawks]

A Geek Itinerary

netbros — Fri, 28 Aug 2009 06:58:14 -0800

Technology innovation will be a large part of late 20th century American history. Now the gearheads can explore the roots of all that geekdom. The Geek's Guide to Seattle is a virtual tour of some of the region’s most interesting and notable technology locations. A Geek's Tour of Silicon Valley hits hotspots there. Don't forget The Tech Museum and the Computer History Museum. Back east, there's Research Triangle Park (pdf) in North Carolina, and The Computing Revolution at the Museum of Science in Boston.

5... 4... 3... 2... 1...

Artw — Fri, 24 Jul 2009 10:25:29 -0800

Scramjets are go!

Happy 40th anniversary, mankind.

sexyrobot — Thu, 02 Jul 2009 13:01:13 -0800

Moon Landing Tapes Found! All the videos you've seen of the first moon landing are crap. Remember, back in the day, video cameras and recorders were two different things. So it went like this: camera on moon sends footage to Australia, where it's recorded on tape (and then those tapes were lost), then downsized onto a smaller monitor, which is filmed by another video camera, uploaded to satellite, and disseminated around the world. America watches it on TV, cheers. Some of this footage is filmed off of a television onto 16mm film. This is what goes into the national archives. Crap. So, the original tapes have been found (spoiler: they never left Australia). So what, right? How good could they be, recorded back in the late 60's and all? Pretty darn good, apparently...seems recording heads were much better than the output available at the time (like playing a Blu-Ray disc on a B&W TV), and several recent projects have shown that it's possible to extract very high resolution data from these old analog tapes. How hi-rez? High enough to see Neil Armstrong's nipples get hard. (be sure to click on that picture) So when can we see this amazing footage? Probably soon.

Tell me a secret.

hpliferaft — Sat, 23 May 2009 15:42:07 -0800

Published speculation first appeared in 1911, although others point to 1945 for its first modern phrasing. It originally looked like a flashlight on Star Trek. In Star Wars, it walked, talked, and was fluent "in over six million forms of communication." Many narratives have just abandoned the idea entirely.
Previous iterations have been quite limited in scope, but now it appears that the first learning, dynamic universal translator has finally arrived. And its futuristic aesthetic has been relegated to fiction in favor of a much more familiar object. Popularized artifacts have included a radio, "a metal tube" (or was it?), a disc, a stylish lapel pin (@ 1m14s), and, of course, a fish. Many other inventions persist. Oh, and when the universe was much smaller, it took a more prosaic form.

Dagger of the Mind

Artw — Wed, 06 May 2009 15:01:13 -0800

The SF Signal Mind Meld feature poses science fiction related questions to a number of SF luminaries and the scientist, science writer or blogger. Subjects have included the best women writers in SF, taboo topics in SF, underated authors and the most controversial SF novels of the past and present. The also cover lighter topics, such the role of media tie-ins, how Battlestar Galactica could have ended better (bonus Geoff Ryman) and the realistic (or otherwise) use of science on TV SF shows.

Nature Cause by Human Culture

netbros — Sun, 19 Apr 2009 07:12:41 -0800

Next Nature is the nature caused by human culture. The technological world has become so intricate and uncontrollable that it has become a nature of its own. Scientific research into nanotechnology, genetic manipulation, ambient intelligence, tissue engineering... all of these young research fields radically interfere with our sense of what is ‘natural’. Here's a visual introduction into next nature. Real nature is not green. There’s precious little nature left that has remained untouched by humans: perhaps a bit here and there on the ocean floor, the South Pole, or the moon. Old concepts like nature and culture, human and animal, and body and mind seem inadequate for understanding ourselves and the technological society we live in. Cloned babies, rainbow tulips, transgenic mice afflicted with chronic cancer to serve medical science: are they natural or cultural?

Take The Credit

fearfulsymmetry — Sat, 11 Apr 2009 03:24:48 -0800

Hang this in your time machine.

Wowed by welding

lizbunny — Thu, 26 Mar 2009 14:43:21 -0800

Nasa is using friction stir welding to build its new space craft. No blowtorch, no solder, no sparks, no smoke, no ozone and no radiation. Instead, it uses friction to heat materials and then "stir" them together at a molecular level.

Radiology Art

Rinku — Mon, 23 Mar 2009 18:01:33 -0800

In the summer of 2007, artist and medical student Satre Stuelke started the Radiology Art project. Dedicated to the deeper visualization of various objects that hold unique cultural importance in modern society, this project intends to plant a seed of scientific creativity in the minds of all those inclined to participate.

The history of the experimentalization of life.

tellurian — Mon, 02 Mar 2009 18:52:23 -0800

The Virtual Laboratory - A collection of essays, biographies, instruments and trade catalogues (e.g. experiment kit) from between 1830 and 1930. I must warn you that some of the films are a bit disturbing. Check out the eerie sounding vowel experiments in the audio section too.

What if...

divabat — Wed, 18 Feb 2009 21:03:15 -0800

The Signtific Lab invites people to develop cutting-edge ideas through experiments of imagination and discussion. Experiment One: what would happen if outer space becomes as accessible as the Web today?

Zeroing out the long term economic stimulus

jeffburdges — Fri, 06 Feb 2009 11:42:08 -0800

Science & technology funding has an enormous long term impact on the economy, a fact that has not escaped China. Yet, Senators Ben Nelson (D-NE) and Susan Collins (R-ME) have proposed cutting all National Science Foundation and Department of Energy Office of Science funding from the Senate American Reinvestment and Recovery Act, along with almost all other proposed funding of the sciences and technological development, as a part of a $77.9B reduction effort. Why? Well, you'll notice that Nebraska & Maine don't contribute much to science & technology in the United States, nor win many grants, and hence no bacon for Nelson and Collins. The proposed cuts include : 50% of NASA exploration for $750M 100% of NSF for $1,402M 35% of NOAA for $427M 38% of NIST for $218M 38% of DOE energy efficiency & renewable energy for $1,000M 100% of DOE office of science for $100M

People doing strange things with electricity

funkiwan — Tue, 30 Dec 2008 21:59:04 -0800

Dorkbot is a "monthly meeting of artists (sound/image/movement/whatever), designers, engineers, students, scientists, and other interested parties who are involved in the creative use of electricity." Started in NYC in 2000 by Douglas Repetto, Director of Research at the Columbia University Computer Music Center as well as one of Wired's 10 Sexiest Geeks, there are now dozens all over the world. Past presenters have been featured here on the blue. For instance Jeff Han presented his multi-touch interface at dorkbot-nyc in April of 2006. Miru Kim presented her naked city spleen at dorkbot-nyc in October of 2006. Bummed that there's not one in your own city? Start your own! The NYC meetings (first Wednesday of the month) are very casual and draw an eclectic range of presenters. A great mix of software and hardware mixed with various artistic influences. Would love to hear how they are run in other cities if anyone's been.

Better than your average magazine article

Mike1024 — Fri, 19 Dec 2008 01:25:45 -0800

The British government's Parliamentary Office of Science and Technology retains PhD and EngD students to produce POSTnotes, information-dense 4 page summaries of science and technology issues, aimed at informing members of parliament. Topics covered include HIV/AIDS in developing countries, large scale electricity storage, future nuclear technologies and next generation broadband access.

Deep Geek: Understanding Memristors

NortonDC — Sun, 07 Dec 2008 19:54:57 -0800

The coming memristor revolution in electronics and how it works. The newly created memristor, only the fourth fundamental fundamental type of passive circuit element, has the promise of computing advances both prosaic (faster, cheaper and "bigger" flash drives) and momentous (relatively effortless mimicry of brain cells and their activity). This is the story of the memristor's genesis, told by R. Stanley Williams, the leader of the team that created the device. Being deeply geeky myself, I've read about memristors before, but reading this article and sidebar finally let me understand how the memristor works and what happens inside it. And that felt pretty damn good. The article is fantastic, but it does leave one key connection unmade. To create a practical memristor, the team "needed [a] mechanism by which we could change the effective spacing between two wires in our crossbar by 0.3 nm. If we could do that, we would have the 1000:1 [variation in conductivity] we needed... Where would we find a material that could change its physical dimensions like that?" They did create a way to vary that spacing, in a controllable, repeatable, and extremely fast-acting manner, but Williams doesn't directly explain how the internal actions of the switching layer meet that requirement. The payoff for that setup is missing. When electrical current pushes the conductive impurities in the layer of titanium dioxide toward the other wire, the conductive portion of the layer grows toward the other wire, and the insulating portion of the layer thins. That thinning is described, but the article never tells the reader that expansion of the conductive layer is that long-sought means of moving the wires. If you read the article and made that connection before I described it, then you might have felt as smug about it as I did. Williams gets to feel more smug.

One Web to Rule Them All

netbros — Sat, 20 Sep 2008 22:21:07 -0800

"I would like to take a broader look at the Web. I would like to consider what the Web can do for society on a scale we have not yet seen. And I would like to enlist your help to get us there." ― Tim Berners-Lee announces the World Wide Web Foundation "Our success will be measured by how well we foster the creativity of our children. Whether future scientists have the tools to cure diseases. Whether people, in developed and developing economies alike, can distinguish reliable health care information from commercial chaff. Whether the next generation will build systems that support democracy, inform the electorate, and promote accountable debate." ― Berners-Lee's speech before the Knight Foundation announcing the formation of the World Wide Web Foundation. Here is the concept paper.

(Internetworking Frequency, 2.4 gigacycles.)

TheOnlyCoolTim — Tue, 09 Sep 2008 19:36:35 -0800

The Early Television Foundation and Museum Website covers the nascent days of the nation's pastime, with interesting items like mechanical TVs and programming schedules from 1939.

ScienceDebate2008 Update

gruchall — Mon, 01 Sep 2008 19:16:25 -0800

Barack Obama has responded to the 14 questions posed by ScienceDebate2008 (discussed previously). The Martian Chronicles has outlined some key points of his response. John McCain has not responded to the questions, but has indicated that he will respond.

Make it work

Artw — Mon, 01 Sep 2008 13:05:33 -0800

"He's always thinking about lots of things — he's a pollinator, he brings ideas to the table" You probably know Neal Stephenson for his work as an author (generally in or adjacent to the Science Fiction genre), but he's also an inventor at Washington based "Idea Factory" Intellectual Ventures, a place with modern goals like stomping out malaria and preventing hurricanes. This is after his old job as part-time rocket scientist.

retrovirally transforming pancreatic cells from adult mice into insulin-producing beta cells

kliuless — Wed, 27 Aug 2008 19:51:39 -0800

Scientists Repurpose Adult Cells - "Scientists have transformed one type of fully developed adult cell directly into another inside a living animal, a startling advance that could lead to cures for a variety of illnesses and sidestep the political and ethical quagmires associated with embryonic stem cell research." [nature abstract, nature writeup, audio announcement]

Al-Jazari's Elephant Clock and other Islamic Inventions

Kattullus — Wed, 06 Aug 2008 10:14:54 -0800

Al-Jazari is the best-known Islamic inventor of the Middle Ages, famous for his waterclocks and automata. The wonderful History of Science and Technology in Islam has articles on him as well as other subjects. A medieval manuscript of Al-Jazari's masterwork, a book generally known in English as either Book of Knowledge of Mechanical Devices, can be perused in its entirety in flash form. It includes 174 illustrations. If you want to see working copies of his most famous automaton, the Elephant Clock, you can go either to the Ibn Battuta Mall in Dubai (Flickr pictures), the Musée d'Horlogerie du Locle in Switzerland (Cabinet of Wonders post about visiting the museum) or Institute for the History of Arab-Islamic Science in Frankfurt (article about the institute from a feature in Saudi Aramco World magazine called Rediscovering Arabic Science).

MIT TechTV

Rykey — Fri, 18 Jul 2008 09:44:07 -0800

MIT TechTV [beta]. Like YouTube for braniacs (minus the scandalous invasion of privacy).

Encyclopedia of Greece, from ancient times to the modern day, focusing on science and technology

Kattullus — Fri, 18 Jul 2008 06:21:23 -0800

Hellenica is an encyclopedia of Greek culture, from classical Hellas, through the Byzantine Empire until the modern day, though its focus is on antiquity and especially the science and technology of Ancient Greece. Featuring technical diagrams and explications, there's no better site if you seek information on gigantic galleys, now obscure great Greek mathematicians, the last still working Ancient lighthouse and gears and how they were used by Archimedes and other ancients. This is not to denigrate other sections of the site, such as the page on the Olympics (including a Google Map of the site of the games), biographies of ancient, Byzantine and modern Greeks, the warring and healing of the Byzantines or the overview of Greek literature, taking in antiquity, the medieval era and modern times. That said, Hellenica is at its finest when treating science and technology.