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Amateur radio

Amateur radio
An example of an amateur radio station with four transceivers, amplifiers, and a computer for logging and for digital modes. On the wall are examples of various awards, certificates, and a reception report card (QSL card) from a foreign amateur station. Amateur radio (also called ham radio) is the use of designated radio frequency spectra for purposes of private recreation, non-commercial exchange of messages, wireless experimentation, self-training, and emergency communication. The term "amateur" is used to specify persons interested in radio technique solely with a personal aim and without direct monetary or other similar reward, and to differentiate it from commercial broadcasting, public safety (such as police and fire), or professional two-way radio services (such as maritime, aviation, taxis, etc.). History[edit] An amateur radio station in the United Kingdom. Ham radio[edit] Activities and practices[edit] Licensing[edit] The top of a tower supporting a yagi and several wire antennas Related:  rod57

How to Remove Trovi / Conduit / Search Protect Browser Hijack Malware If your computer has been hijacked with an obnoxious malware that won’t let you change your home page, there’s a strong chance you’ve been infected with the Trovi Search Protect malware, which used to be known as Conduit. Here’s how to remove it. How do you know this is malware? How Did You Get Infected? Usually at some point you made the huge mistake of trusting a site like Download.com, which bundled it into an installer for a completely different application. They get around the legality issue with their long terms of service that nobody reads and by making sure there’s actually a way to uninstall the thing. Removing the Trovi Search Protect Malware This is really sad to say, but it’s actually important to use the Search Protect panel to turn off the bad settings first before uninstalling it. In here, change your Home Page back to Google or whatever you want. Now change your New Tab page back to Browser Default. Change your Default Search back to “Browser default search engine.”

Robotics Robotics is the branch of mechanical engineering, electrical engineering and computer science that deals with the design, construction, operation, and application of robots,[1] as well as computer systems for their control, sensory feedback, and information processing. These technologies deal with automated machines that can take the place of humans in dangerous environments or manufacturing processes, or resemble humans in appearance, behavior, and/or cognition. Many of today's robots are inspired by nature contributing to the field of bio-inspired robotics. The concept of creating machines that can operate autonomously dates back to classical times, but research into the functionality and potential uses of robots did not grow substantially until the 20th century.[2] Throughout history, robotics has been often seen to mimic human behavior, and often manage tasks in a similar fashion. Etymology[edit] History of robotics[edit] Robotic aspects[edit] Components[edit] Power source[edit]

Welcome to Ford Owner | Official Ford Owner Site Programmer British countess and mathematician Ada Lovelace is considered the first computer programmer, as she was the first to write and publish an algorithm intended for implementation on Charles Babbage's analytical engine, in October 1842, intended for the calculation of Bernoulli numbers.[8] Lovelace was also the first person to comment on the potential for computers to be used for purposes other than computing calculations. Because Babbage's machine was never completed to a functioning standard in her time, she never saw her algorithm run. The first person to run a program on a functioning modern electronically based computer was computer scientist Konrad Zuse, in 1941. The ENIAC programming team, consisting of Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Wescoff, Fran Bilas and Ruth Lichterman were the first regularly working programmers.[9][10] Nature of the work[edit] Programmers in the Yandex headquarters. Testing and debugging[edit] Application versus system programming[edit]

British Royal Family History Welder A welder or welder operator is a tradesman who specializes in welding materials together. The term welder refers to the operator, the machine is referred to as the welding power supply. The materials to be joined can be metals (such as steel, aluminum, brass, stainless steel etc.) or varieties of plastic or polymer. Welders typically have to have good dexterity and attention to detail, as well as some technical knowledge about the materials being joined and best practices in the field.[1][2] Safety issues[edit] Welders are also often exposed to dangerous gases and particulate matter. References[edit] See also[edit] Further reading[edit] ASM International (2003).

NOVA Can Wind Turbines Make You Sick? Residents living in the shadows of wind turbines say the sound is making them sick. But so far the science isn't there. From NOVA Next | Jun 27, 2018 Thirty Years Ago Today, Global Warming First Made Headline News On June 23, a NASA climate scientist, James Hansen, told a U.S. From NOVA Next | Jun 23, 2018 New Middle Eastern Particle Accelerator’s Motto is “Science for Peace” In a region in turmoil, an unprecedented joint venture of scientists and policymakers is working together on Jordan’s new particle accelerator under the motto "science for peace." From NOVA Next | Jun 21, 2018 Psychological Damage Inflicted By Parent-Child Separation is Deep, Long-Lasting Here's what happens in the brain and the body when a child is forcibly separated from his or her parents.

Distributed generation Distributed generation, also called on-site generation, dispersed generation, embedded generation, decentralized generation, decentralized energy, distributed energy or district energy,[1] generates electricity from many small energy sources. Most countries generate electricity in large centralized facilities, such as fossil fuel (coal, gas powered), nuclear, large solar power plants or hydropower plants. These plants have excellent economies of scale, but usually transmit electricity long distances and can negatively affect the environment. Distributed generation allows collection of energy from many sources and may give lower environmental impacts and improved security of supply. Local wind generator, Spain, 2010 Economies of scale[edit] Historically, central plants have been an integral part of the electric grid, in which large generating facilities are specifically located either close to resources or otherwise located far from populated load centers. Grid parity[edit] Microgrid[edit]

Haymarket Beat - We're Talking about You! : Haymarket Beat Alternative energy Alternative energy is any energy source that is an alternative to fossil fuel. These alternatives are intended to address concerns about such fossil fuels. The nature of what constitutes an alternative energy source has changed considerably over time, as have controversies regarding energy use. Today, because of the variety of energy choices and differing goals of their advocates, defining some energy types as "alternative" is highly controversial.[1] In a general sense, alternative energy as it is currently conceived, is that which is produced or recovered without the undesirable consequences inherent in fossil fuel use, particularly high carbon dioxide emissions, an important factor in global warming. Definitions[edit] History[edit] Coal as an alternative to wood[edit] Historian Norman F. "Europeans had lived in the midst of vast forests throughout the earlier medieval centuries. Petroleum as an alternative to whale oil[edit] Alcohol as an alternative to fossil fuels[edit] Algae fuel[edit]

Aprilaire | Air Purifiers, Humidifiers, Ventilation, Dehumidifiers and more Lineman (occupation) A lineman (American English) or linesman (British English), also occasionally called a lineworker, powerline technician (PLT), or a powerline worker, is a tradesman who constructs and maintains electric power transmission and distribution facilities. The term is also used for those who install and maintain telephone, telegraph, cable TV and more recent fiber optic lines.It is also used to maintain most of the telephone poles in the world. The term refers to those who work in generally outdoor installation and maintenance jobs. Those who install and maintain electrical wiring inside buildings are electricians. The occupation began with the widespread use of the telegraph in the 1840s. This new electrical power work was more hazardous than telegraph or telephone work because of the risk of electrocution. The rural electrification drive during the New Deal led to a wide expansion in the number of jobs in the electric power industry. Ameren lineman practicing a utility pole rescue

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