Tag: archives (page 1 of 2)

Figure 1

“A daguerreotype image, the first commercialized photographic process, is composed of silver-mercury, and often silver-mercury-gold amalgam particles on the surface of a silver-coated copper plate. Specular and diffuse reflectance of light from these image particles produces the range of gray tones that typify these 19th century images. By mapping the mercury distribution with rapid-scanning, synchrotron-based micro-X-ray fluorescence (μ-XRF) imaging, full portraits, which to the naked eye are obscured entirely by extensive corrosion, can be retrieved in a non-invasive, non-contact, and non-destructive manner. This work furthers the chemical understanding regarding the production of these images and suggests that mercury is retained in the image particles despite surface degradation. Most importantly, μ-XRF imaging provides curators with an image recovery method for degraded daguerreotypes, even if the artifact’s condition is beyond traditional conservation treatments”.

Source : Recovery of Degraded-Beyond-Recognition 19 th Century Daguerreotypes with Rapid High Dynamic Range Elemental X-ray Fluorescence Imaging of Mercury L Emission | Scientific Reports

«These 16,016 BBC Sound Effects are made available by the BBC in WAV format to download for use under the terms of the RemArc Licence. The Sound Effects are BBC copyright, but they may be used for personal, educational or research purposes, as detailed in the license».

Source : BBC Sound Effects – Research & Education Space


«Les progrès de la robotique et de l’intelligence artificielle permettent d’envisager une infrastructure à l’échelle du continent pour numériser, analyser, reconstituer notre patrimoine millénaire. […] Les Big Data nous promettent une société où nous pourrions anticiper l’avenir, grâce à la puissance de calcul des superordinateurs et la collecte massive de données» – Frédéric Kaplan.

Source : La machine vénitienne à remonter le temps se tourne vers l’Europe – Le Temps

Library of Congress

«Twitter has also grown exponentially in the years since the library started its collection. That year, 2010, about half a billion tweets were posted every two weeks. In November, that many were sent each day. The messages are now longer: The company recently doubled its limit for tweets to 280 from 140 characters. Such complications have plagued public access to the archive, too, which is limited while the library works to find a cost-effective and sustainable way to open the archive to the public».

Source : The Library of Congress No Longer Wants All the Tweets – The New York Times

Museum of endangered sounds

Source : Museum of Endangered Sounds

« Pour Internet Archive, la question d’un changement complet de philosophie se pose. L’archivage du web ne doit plus se faire en tenant compte des déclarations des fichiers robots.txt qui s’adressent avant tout aux moteurs de recherche. Il doit se faire en prenant en compte le point de vue de l’utilisateur, de façon à lui montrer le web tel qu’il est aujourd’hui. Et tel qu’il était autrefois ».

Source : Pour conserver la mémoire du web, Internet Archive durcit ses méthodes – Tech – Numerama

« Le pire ennemi de l’homme ou de la femme politique est lui-même, son ancien moi, celui qui disait autre chose, qui le disait différemment. En relevant ces contradictions, on pense révéler une vérité de la politique : ah regardez, il se renie, trahit et se parjure… Ok. Mais rappelons-nous la belle phrase d’Edgar Faure qui disait : ‘Ce n’est pas la girouette qui tourne, c’est le vent.' »

Source : Eh oui, Manuel Valls, Internet n’oublie plus rien

Alarmed that decades of crucial climate measurements could vanish under a hostile Trump administration, scientists have begun a feverish attempt to copy reams of government data onto independent servers in hopes of safeguarding it from any political interference.

Source : Scientists are frantically copying U.S. climate data, fearing it might vanish under Trump – The Washington Post

The history of libraries is one of loss. The Library of Alexandria is best known for its disappearance. Libraries like ours are susceptible to different fault lines: Earthquakes, Legal regimes, Institutional failure. So this year, we have set a new goal: to create a copy of Internet Archive’s digital collections in another country. We are building the Internet Archive of Canada because, to quote our friends at LOCKSS, “lots of copies keep stuff safe.”

Toute analogie entre l’élection de Trump et les tremblements de terre ne serait que pure fiction…

Source : Help Us Keep the Archive Free, Accessible, and Reader Private | Internet Archive Blogs

Welcome to the official Giphy channel for the National Archives. For the official source of information about the National Archives

Source : http://giphy.com/usnationalarchives

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