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CERN Open Hardware License
The CERN Open Hardware Licence (OHL or CERN OHL) is a license used in open-source hardware projects. It was created by CERN, which published version 1.0 in March 2011. Version 1.1 was published in July 2011. Version 1.2 was published in September 2013. Version 2.0, which utilizes a simplified language and covers also integrated circuit designs, was published in March 2020. Wording Contrary to most of license names, the CERN OHL uses the British English spelling ''licence'' rather than the American English spelling ''license'' which contains an "s". Projects using the CERN OHL On the CERN OHL website they have a list of projects using their license. These projects include: Most projects in the Open Hardware Repository OHR* AXIOM – digital cinema camera Gizmo For You LtdMechanical Ventilator MilanoRapid production ventilator design as an answer to COVID-19 shortage The Monero Hardware WalletThe first (licensed schematic and layout) Monero hardware wallet * Mycroft Mark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
License
A license (or licence) is an official permission or permit to do, use, or own something (as well as the document of that permission or permit). A license is granted by a party (licensor) to another party (licensee) as an element of an agreement between those parties. In the case of a license issued by a government, the license is obtained by applying for it. In the case of a private party, it is by a specific agreement, usually in writing (such as a lease or other contract). The simplest definition is "A license is a promise not to sue," because a license usually either permits the licensed party to engage in an activity which is illegal, and subject to prosecution, without the license (e.g. fishing, driving an automobile, or operating a broadcast radio or television station), or it permits the licensed party to do something that would violate the rights of the licensing party (e.g. make copies of a copyrighted work), which, without the license, the licensed party could be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synchrotron
A synchrotron is a particular type of cyclic particle accelerator, descended from the cyclotron, in which the accelerating particle beam travels around a fixed closed-loop path. The magnetic field which bends the particle beam into its closed path increases with time during the accelerating process, being ''synchronized'' to the increasing kinetic energy of the particles. The synchrotron is one of the first accelerator concepts to enable the construction of large-scale facilities, since bending, beam focusing and acceleration can be separated into different components. The most powerful modern particle accelerators use versions of the synchrotron design. The largest synchrotron-type accelerator, also the largest particle accelerator in the world, is the Large Hadron Collider (LHC) near Geneva, Switzerland, built in 2008 by the European Organization for Nuclear Research (CERN). It can accelerate beams of protons to an energy of 6.5 tera electronvolts (TeV or 1012 eV). Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open-source Hardware
Open-source hardware (OSH) consists of physical artifacts of technology designed and offered by the open-design movement. Both free and open-source software (FOSS) and open-source hardware are created by this open-source culture movement and apply a like concept to a variety of components. It is sometimes, thus, referred to as FOSH (free and open-source hardware). The term usually means that information about the hardware is easily discerned so that others can make it – coupling it closely to the maker movement. Hardware design (i.e. mechanical drawings, schematics, bills of material, PCB layout data, HDL source code and integrated circuit layout data), in addition to the software that drives the hardware, are all released under free/libre terms. The original sharer gains feedback and potentially improvements on the design from the FOSH community. There is now significant evidence that such sharing can drive a high return on investment for the scientific community. It is n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Source Initiative
The Open Source Initiative (OSI) is the steward of the Open Source Definition, the set of rules that define open source software. It is a California public-benefit nonprofit corporation,_with_501(c)(3).html" ;"title="110. - 6910./ref> is a type of Nonprofit organization">nonprofit corporation chartered by a state governments of the United States, state gover ..., with 501(c)(3)">110. - 6910./ref> is a type of Nonprofit organization">nonprofit corporation chartered by a state governments of the United States, state gover ..., with 501(c)(3) tax-exempt status. The organization was founded in late February 1998 by Bruce Perens and Eric S. Raymond, part of a group inspired by the Netscape Communications Corporation publishing the source code for its flagship Netscape Communicator product. Later, in August 1998, the organization added a board of directors. Raymond was president from its founding until February 2005, followed briefly by Russ Nelson and then Michael Tiemann. In May 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free Cultural Works
The Definition of Free Cultural Works is a definition of free content from 2006. The project evaluates and recommends compatible free content licenses. History The Open Content Project by David A. Wiley in 1998 was a predecessor project which defined open content. In 2003, Wiley joined the Creative Commons as "Director of Educational Licenses" and announced the Creative Commons and their licenses as successors to his Open Content Project. Therefore, Creative Commons' Erik Möller in collaboration with Richard Stallman, Lawrence Lessig, Benjamin Mako Hill, Angela Beesley, and others started in 2006 the Free Cultural Works project for defining free content. The first draft of the ''Definition of Free Cultural Works'' was published 2 April 2006. The 1.0 and 1.1 versions were published in English and translated into several languages. The ''Definition of Free Cultural Works'' is used by the Wikimedia Foundation. In 2008, the Attribution and Attribution-ShareAlike Creative Comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cooking Recipe
A recipe is a set of instructions that describes how to prepare or make something, especially a dish of prepared food. A sub-recipe or subrecipe is a recipe for an ingredient that will be called for in the instructions for the main recipe. History Early examples The earliest known written recipes date to 1730 BC and were recorded on cuneiform tablets found in Mesopotamia. Other early written recipes date from approximately 1600 BC and come from an Akkadian tablet from southern Babylonia. There are also works in ancient Egyptian hieroglyphs depicting the preparation of food. Many ancient Greek recipes are known. Mithaecus's cookbook was an early one, but most of it has been lost; Athenaeus quotes one short recipe in his '' Deipnosophistae''. Athenaeus mentions many other cookbooks, all of them lost. Andrew Dalby, ''Food in the Ancient World from A to Z'', 2003. p. 97-98. Roman recipes are known starting in the 2nd century BCE with Cato the Elder's '' De Agri Cultura''. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Libre Software Meeting
The Libre Software Meeting (LSM) is an annual free software event originally held in France. The French name of this event is Rencontres mondiales du logiciel libre (RMLL). Summary The Libre Software Meeting takes place each year since 2000, in July. Launched by the French free software users group Association Bordelaise des utilisateurs de logiciels libres ( ABUL). More than 1000 people, coming from more than 50 countries, participate each year. The LSM is a mix of two complementary meetings: * a developers meeting, free software coders coming to discuss about their projects during the event * a free software promotion event dedicated to a large audience Organisation The LSM is organized by a team of volunteers, combining local and national free software associations. Villages The village of the associations welcome the visitors with a set of stands presenting local or national associations. Hosting cities Logo The LSM logo was drawn with Sketch by André Pas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free Beer
Opay Beer, originally known as Vores øl - An open source beer (English: ''Our Beer''), is a brand of beer and the first with an "open"/"free" brand and recipe. The recipe and trademark elements are published under the Creative Commons CC BY-SA license.FAQ ''"How can a beer be “free”? The recipe and the FREE BEER brand is published under a Creative Commons Attribution-ShareAlike license"'' on freebeer.org The beer was created in 2004 by students at the IT University in together with |
UPSat
UPSat was the first satellite manufactured in Greece to be successfully launched into orbit, by the University of Patras and Libre Space Foundation (an earlier Greek-made communications satellite, HELMARS-SAT, although entirely constructed by 1999, was not launched due to budget limitations). It was part of the QB50 mission with ID GR-02. The UPSat mission was the first satellite launched into orbit made entirely of open-source software and open-source hardware. Open-source The UPSat mission developed an open-source hardware and software 2U cubesat, minimizing the use of commercial off the shelf components, and providing hardware and software designs under the provisions of the CERN-OHLv2 and GNU-GPLv3 licenses respectfully. The vast majority of its components were designed from scratch in an open-source software and hardware way. Mission UPSat, as part of the QB50 cubesat constellation, was launched to the International Space Station at April 18, 2017 11:11 EDT at Cape Cana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tristimulus Colorimeter
A tristimulus colorimeter, colloquially shortened to ''colorimeter'', is used in digital imaging to profile and calibrate output devices. It takes a limited number of wideband spectral energy readings along the visible spectrum by using filtered photodetectors; e.g. silicon photodiodes. A colorimeter with the known value of absolute error allows measuring (x,y)-chromaticity coordinates in red, green, blue and white colors. Measured values are used for calculation of LCD profile coefficients. Originally, three glass filters whose transmittance spectra mimicked the CIE color matching functions (shown below) were employed. A filter bank may be used to decompose the individual color matching functions if more accuracy is desired. A camera or colorimeter is said to be ''colorimetric'' if it satisfies the by (1868–1945) (also called the " Maxwell–Ives criterion"), reducing observer metamerism color errors, if the product of the spectral responsivity of the photoreceptor and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
