Skill No.55: TURN A SPEAKER INTO A MICROPHONE

“Stashing a voice-activated recording device in a target’s room or vehicle is relatively simple, but without sound amplification, such a setup is unlikely to result in audible intelligence — a proper audio-surveillance system requires amplification via microphone. In the absence of dedicated tools, however, the Nomad can leverage a cell phone, an audio jack, and a pair of headphones into an effective listening device.”

“Because microphones and speakers are essentially the same instrument, any speaker — from the earbuds on a pair of headphones to the stereo system on a television — can be turned into a microphone in a matter of minutes. The simple difference between the two is that their functions are reversed. While a speaker turns electronic signals into sound, a mic turns sound into electronic signals to be manipulated and amplified…”

“Any small recording device can be employed, but using a phone set to silent and auto answer as a listening device has two advantages: It captures intelligence in real time and does so without the operative having to execute a potentially dangerous return trip on target to collect the device…”

From: “100 Deadly Skills: The SEAL Operative’s Guide to Eluding Pursuers, Evading Capture, and Surviving Any Dangerous Situation“, Clint Emerson, 2015.

“Like Asia and the Americas, the continent of Africa is blessed with a rich tropical flora. Many of the 50,000 or so plants that evolved within its forests and savannas ripen fruits to tempt the myriad wild creatures into spreading their seeds. Speaking generally, Africa has as many of these tasty morsels as tropical Asia or America.

This fact, however, is something one would never guess by looking in produce markets or college textbooks. Today, American and Asian species dominate tropical fruit production worldwide, including within Africa itself.

For this, there is good reason. Africa’s fruits have not, by and large, been brought up to their potential in terms of quality, production, and availability. Geographically speaking, few have moved beyond Africa’s shores; horticulturally speaking, most remain poorly known. Thus, the vast continental landmass lying between Mauritania and Mauritius contains a cornucopia of horticultural, nutritional, and rural-development jewels still waiting to be cut and polished.”

• Lost Crops of Africa: Volume 1: Grains (1996)
• Lost Crops of Africa: Volume 2: Vegetables (2006)
• Lost Crops of Africa: Volume 3: Fruits (2008)

The three volumes can be consulted online at The National Academic Press. Previously: Lost crops of the Incas. Via Avantgardens.

They include Iran’s Qanat Irrigation system, an ancient network of farms that have survived for nearly three millennia; a 22-thousand-kilometer system of black stone walls built from volcanic rock in Jeju, South Korea; and the traditional Gudeuljang Irrigated rice terraces in Cheongsando, South Korea.

Also on the list are a trio of sites in China: the unique Xinghua Duotian Agrosystem, famous for its method of water-land utilization; the historic Jasmine and Tea Culture System of Fuzhou City; and, the Jiaxian Traditional Chinese Date Gardens. The sites were officially recognized during the 28-29 April meeting of the GIAHS Scientific and Steering Committee at FAO headquarters in Rome.

These new designations bring the number of GIAHS systems to a total of 31 sites located in 14 countries in Africa, Latin America and Asia. The sites are considered models of innovation, sustainability and adaptability, delivering important benefits to the ecosystem. The GHIAS website has extensive documentation about most of these agricultural heritage systems. Picture: The Jasmine and Tea Culture System of Fuzhou City, China.

Demand, a publication of the American Society of Mechanical Engineers (ASME), was launched in December 2013. It mixes case studies, stories and original reports from leaders in the sector’s fields. In the first edition, the US engineering professors Nathan Johnson at Arizona State University and Kenneth Bryden at Iowa State University place pieces in the unused cookstove puzzle with their own research in rural Mali. Other notable topics include low-cost and rugged wheelchair design, remote sensors for project evaluation, smokehoods reimagined to fight indoor air pollution and funding for social innovators. Read more about the launch of the new magazine.

The Journal of Humanitarian Engineering (JHE) was launched in May 2012. Two volumes have been published so far, and a third is on the way. The magazine, which is published by the Engineers Without Borders Institute in Melbourne, Australia, presents outcomes of research and field experiences at the intersection of technology and community development. “One of the wishes we’ve heard from experts in humanitarian design and engineering is for academia to keep pace with the rising interest in the field. Appropriate technology design and the invention of new devices, tools and infrastructure for use in regions with few resources has apparently had trouble gaining recognition in major universities. With a few notable exceptions, formal academic programs in appropriate technologies are rare, and academics have few outlets to publish their research. The JHE aims to fill this gap.” Read more about the initiative.

Demand and JHE join a growing library of publications that specialize in “global development technologies”. Appropriate Technology has been around since 2003, while Makeshift saw the light in 2011. These magazines have to be paid for. More publications and academic programs can be found here. Previously: How to make everything yourself: online low-tech resources.

Especially interesting for Low-tech and No Tech Magazine readers are the journals in the categories History, Archaeology, Technology & Engineering, and Earth and Environmental Sciences.

Dedicated to Aaron Swartz. Also: #PDF Tribute to Aaron Swarz (via TechCrunch), a mass protest uploading of copyright-protected research articles. Previously: Censors of Knowledge.

The “Dictionnaire raisonné de l’architecture française du XIe au XVIe siècle” is an overwhelming reference work consisting of 9 books (some 5,000 pages in total) on medieval and renaissance architecture in France. It is written in French, as you already suspected, but the detailed illustrations make it worthwhile for all architecture and history devotees. There is really all you need to know to build, for instance, a gothic cathedral, including the gargoyles. The work appeared in 1856 and was written by Eugène Viollet-le-Duc, an architect known for his restorations of medieval buildings. The separate volumes can also be found on the Internet Archive.

Whether or not you are interested in the publications, the accompanying manifest written by Greg Maxwell deserves to be read. Find a summary below. Original manifest + download here. Via Edwin Mijnsbergen.

Unpaid Workers

“On July 19th 2011, Aaron Swartz was criminally charged by the US Attorney General’s office for, effectively, downloading too many academic papers from JSTOR. Academic publishing is an odd system – the authors are not paid for their writing, nor are the peer reviewers (they’re just more unpaid academics), and in some fields even the journal editors are unpaid. Sometimes the authors must even pay the publishers. And yet scientific publications are some of the most outrageously expensive pieces of literature you can buy.”

Mechanical Reproduction

“In the past, the high access fees supported the costly mechanical reproduction of niche paper journals, but online distribution has mostly made this function obsolete. As far as I can tell, the money paid for access today serves little significant purpose except to perpetuate dead business models. Many don’t even realize the extent to which academic work is inaccessible to the general public, nor do they realize what sort of work is being done outside universities that would benefit by it. Large publishers are now able to purchase the political clout needed to abuse the narrow commercial scope of copyright protection, extending it to completely inapplicable areas: slavish reproductions of historic documents and art, for example, and exploiting the labors of unpaid scientists.”

Public Domain

“Several years ago I came into possession, through rather boring and lawful means, of a large collection of JSTOR documents. These particular documents are the historic back archives of the Philosophical Transactions of the Royal Society – a prestigious scientific journal with a history extending back to the 1600s. The portion of the collection included in this archive, ones published prior to 1923 and therefore obviously in the public domain, total some 18,592 papers and 33 gigabytes of data. The documents are part of the shared heritage of all mankind, and are rightfully in the public domain, but they are not available freely. Instead the articles are available at $19 each – for one month’s viewing, by one person, on one computer. It’s a steal. From you.”

Watermarks

“When I received these documents I had grand plans of uploading them to Wikipedia’s sister site for reference works, Wikisource – where they could be tightly interlinked with Wikipedia, providing interesting historical context to the encyclopedia articles. For example, Uranus was discovered in 1781 by William Herschel; why not take a look at the paper where he originally disclosed his discovery? (Or one of the several follow on publications about its satellites, or the dozens of other papers he authored?)”

“But I soon found the reality of the situation to be less than appealing: publishing the documents freely was likely to bring frivolous litigation from the publishers. As in many other cases, I could expect them to claim that their slavish reproduction – scanning the documents – created a new copyright interest. Or that distributing the documents complete with the trivial watermarks they added constituted unlawful copying of that mark. They might even pursue strawman criminal charges claiming that whoever obtained the files must have violated some kind of anti-hacking laws.”

“Free” Access

“In my discreet inquiry, I was unable to find anyone willing to cover the potentially unbounded legal costs I risked, even though the only unlawful action here is the fraudulent misuse of copyright by JSTOR and the Royal Society to withhold access from the public to that which is legally and morally everyone’s property. In the meantime, and to great fanfare as part of their 350th anniversary, the RSOL opened up “free” access to their historic archives – but “free” only meant “with many odious terms”, and access was limited to about 100 articles.”

“All too often journals, galleries, and museums are becoming not disseminators of knowledge – as their lofty mission statements suggest – but censors of knowledge, because censoring is the one thing they do better than the Internet does.”

Poisonous Industry

“More than in any other area, the application of restrictive copyright is inappropriate for academic works: there is no sticky question of how to pay authors or reviewers, as the publishers are already not paying them. And unlike ‘mere’ works of entertainment, liberal access to scientific work impacts the well-being of all mankind. Our continued survival may even depend on it. If I can remove even one dollar of ill-gained income from a poisonous industry which acts to suppress scientific and historic understanding, then whatever personal cost I suffer will be justified – it will be one less dollar spent in the war against knowledge. One less dollar spent lobbying for laws that make downloading too many scientific papers a crime.”

“I had considered releasing this collection anonymously, but others pointed out that the obviously overzealous prosecutors of Aaron Swartz would probably accuse him of it and add it to their growing list of ridiculous charges. This didn’t sit well with my conscience, and I generally believe that anything worth doing is worth attaching your name to. I’m interested in hearing about any enjoyable discoveries or even useful applications which come of this archive.”

gmaxwell [at ]gmail [dot] com

Legal commentary here.

“Appletons’ cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880): Volume I – Volume II” is another great resource on 19th century technology. Via Tecob. Previously:

• “Modern mechanism; exhibiting the latest progress in machines, motors, and the transmission of power“, Benjamin Park (1892)
• “Les merveilles de l’industrie, ou description des principales industries modernes“, Louis Figuier (1873-1877)
• “Dictionary of arts, manufactures, and mines containing a clear exposition of their principles and practice“, Andrew Ure (1875)

This is the online version of the latest edition guide to practical books on village and small community technology. Over 50,000 print copies of the previous editions have been used in more than 130 countries to find a wide range of published technical information that can be used by individuals and small groups.

In the new edition, 1150 publications are reviewed, covering small water supply systems, renewable energy devices such as water mills and improved cook stoves, agricultural tools and implements, intensive gardening, nonformal education, small business management, transportation, small industries and other topics.”

All previous entries in ‘Books & Reference‘.

“With the advent of the industrial revolution, the inherited techniques and perfected knowledge of creating, using handmade tools, were lost and are now forgotten. Energy-intensive mechanized tools have diminished man’s personal, cellular contribution to the fabrication of objects, the building of structures, and the growing of food. The lesser the challenge for man to imprint his genius, the less artistic is the product. The resulting economic and political disturbances are visible today. Production of beauty, once the prerogative of millions, is replaced by industrialization, even of bread, under the control of a minority of owners. The negative consequences of the industrial revolution have disturbed the natural organization of the divine concept for humanity.”

“Sixty years of experience have shown me that industrialization and mechanization of the building trade have caused vast changes in building methods with varying applications in different parts of the world. Constant upheaval results when industrially developed societies weaken the craft-developed cultures through increased communications. As they interact, mutations create societal and ecological imbalance and economic inequities which are documented to be increasing in type and number. Profoundly affected is the mass of the population, which is pressured to consume industrially produced goods. The result is cultural, psychological, moral, and material havoc.”

“Yet it is this population that has an intimate knowledge of how to live in harmony with the local environment. Thousands of years of accumulated expertise has led to the development of economic building methods using locally available materials, climatization using energy derived from the local natural environment, and an arrangement of living and working spaces in consonance with their social requirements. This has been accomplished within the context of an architecture that has reached a very high degree of artistic expression.”

Quoted from: “Architecture and environment” by Hassan Fathy, a noted Egyptian architect who pioneered appropriate technology for building in Egypt, especially by working to re-establish the use of mud brick (or adobe) and traditional as opposed to western building designs and lay-outs.

Fathy demonstrated how elements from vernacular Arab urban architecture, such as the malkaf (wind catch), shukshaykha (lantern dome) and mashrabiya (wooden lattice screen), could be combined with the mud-brick construction traditionally practiced in Nubia in Upper Egypt to form a distinctive, environmentally and socially conscious building style that linked the use of appropriate technologies with co-operative construction techniques and the guiding thread of tradition (source).

All his wonderfully illustrated books can be found online, free to download (in English, French & Arabic). Via TECTONICAblog (Thank you, Zeltia).

“Handy farm devices and how to make them“, Rolfe Cobleigh, 1912.

The British charity BTCV has an interesting collection of practical handbooks online. They all concern traditional practices and give a wealth of how-to details, including many drawings. Update December 2: BTCV has taken the books offline.

Related resources:

• How to make everything yourself
• UNESCO sets up traditional knowledge database
• Compendium of useful information
• Green wizards forum
• Primitive technology handbook

“Modern mechanism; exhibiting the latest progress in machines, motors, and the transmission of power“, Benjamin Park (1892).

“Access to 2 gigabytes of information about sustainable and resilient living that meets the challenges of peak energy, climate instability, economic irrationality, toxic politics, war and violence.”

Compendium of useful information – version 1.0, september 3, 2010. The page reminds a lot of the 13 gigabyte database set up by Alex Weir (previously: How to make everything yourself – online low-tech resources), and from a quick overview I learn that many of the same sources are listed.

However, the list is better organised and also seems to contain quite a few DIY-resources which I did not see before.

Related: the recent launches of the Green Wizard Forums and the UNESCO Traditional Knowledge Base. Picture: totally solar heated house.

Illustration: coptic bookbinding.

Via Achille van den Branden.

Doubts on the recently launched International Traditional Knowledge Database.

“Les merveilles de l’industrie, ou description des principales industries modernes”, Louis Figuier (1873-1877). The 4-volume book is in French, but the engravings are indeed wonderful: Part 1 (750 pages), Part 2 (736 pages), Part 3 (687 pages) & Part 4 (744 pages). A sample of the illustrations of part one and four can be found here and here. Below: salt mines in Wieliska, Poland (extra large illustration). Related: Three thousand pages of 19th century technology.