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  2. National Radio Institute - Wikipedia

    en.wikipedia.org/wiki/National_Radio_Institute

    James Ernest Smith, founder of the National Radio Institute. The National Radio School was established in 1914 in Washington, D.C., by James Ernest Smith (1881–1973) and Emanuel R. Haas (1891–1947). 1 Smith was a teacher at McKinley Manual Training School (which was moved in 1926 to its final location now known as McKinley Technology High School).

  3. Lemon battery - Wikipedia

    en.wikipedia.org/wiki/Lemon_battery

    A lemon battery is a simple battery often made for the purpose of education. Typically, a piece of zinc metal (such as a galvanized nail) and a piece of copper (such as a penny) are inserted into a lemon and connected by wires. Power generated by reaction of the metals is used to power a small device such as a light-emitting diode (LED).

  4. Electricity - Wikipedia

    en.wikipedia.org/wiki/Electricity

    e. Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Common phenomena are related to electricity, including lightning, static electricity ...

  5. Circuit diagram - Wikipedia

    en.wikipedia.org/wiki/Circuit_diagram

    A circuit diagram (or: wiring diagram, electrical diagram, elementary diagram, electronic schematic) is a graphical representation of an electrical circuit. A pictorial circuit diagram uses simple images of components, while a schematic diagram shows the components and interconnections of the circuit using standardized symbolic representations ...

  6. Electrical engineering - Wikipedia

    en.wikipedia.org/wiki/Electrical_engineering

    Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after the commercialization of the electric telegraph, the telephone ...

  7. Science, technology, engineering, and mathematics - Wikipedia

    en.wikipedia.org/wiki/Science,_technology...

    Each year around 946 students, from about 40 high schools, participate in AL-Bairaq competitions. [57] AL-Bairaq makes use of project-based learning, encourages students to solve authentic problems, and inquires them to work with each other as a team to build real solutions. [58] [59] Research has so far shown positive results for the program. [60]

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