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Musée Edouard Branly
The Musée Édouard Branly is a museum dedicated to the work of radio pioneer Édouard Branly (1844-1940). It is located in the 6th arrondissement at the Institut Catholique de Paris-ISEP, 21, rue d'Assas, Paris, France, and open by appointment only.Michael Zils - Museums of the World: Afghanistan-Swaziland - 2001 Page 192 "Musée Édouard-Branly. 21 Rue d'As Paris - T: 0149545220" The museum contains the research laboratory and equipment used by Édouard Branly, a physics professor at the Institut Catholique de Paris and inventor of the first widely used radio receiver, the Branly coherer circa 1884-1886. Its collection includes a number of early devices used in wireless experiments, such as electrolytic detectors, insulated tubes filled with metal filings, a Righi oscillator, generators, electromagnets, metallic blades mounted on glass, electrical contacts, and a column of six steel balls stacked in a glass cylinder. See also * Musée du quai Branly, an art museum * List ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coherer
The coherer was a primitive form of radio signal detector used in the first radio receivers during the wireless telegraphy era at the beginning of the 20th century. Its use in radio was based on the 1890 findings of French physicist Édouard Branly and adapted by other physicists and inventors over the next ten years. The device consists of a tube or capsule containing two electrodes spaced a small distance apart with loose metal filings in the space between. When a radio frequency signal is applied to the device, the metal particles would cling together or " cohere", reducing the initial high resistance of the device, thereby allowing a much greater direct current to flow through it. In a receiver, the current would activate a bell, or a Morse paper tape recorder to make a record of the received signal. The metal filings in the coherer remained conductive after the signal (pulse) ended so that the coherer had to be "decohered" by tapping it with a clapper actuated by an electroma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecommunications Museums
Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than that feasible with the human voice, but with a similar scale of expediency; thus, slow systems (such as postal mail) are excluded from the field. The transmission media in telecommunication have evolved through numerous stages of technology, from beacons and other visual signals (such as smoke signals, semaphore telegraphs, signal flags, and optical heliographs), to electrical cable and electromagnetic radiation, including light. Such transmission paths are often divided into communication channels, which afford the advantages of multiplexing multiple concurrent communication sessions. ''Telecommunication'' is often used in its plural form. Other examples of pre-modern long-distance communication included audio messages, such as coded drumbea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In The 6th Arrondissement Of Paris
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museums In Paris
The 136 museums in the city of Paris display many historical, scientific, and archeological artifacts from around the world, covering diverse and unique topics including fashion, theater, sports, cosmetics, and the culinary arts. The first museums in Paris were established during the French Revolution as many royal properties became nationalised. In the late 19th and early 20th centuries, the Belle Époque period, a series of new museums were born in Paris, many of which came from personal collections donated by philanthropists. In recent decades, the city continues to build new museums. The Musée du quai Branly – Jacques Chirac, opened in 2006, is the latest large museum in Paris today. Being a center of art for centuries, many works of famous artists, including Leonardo da Vinci, Raphael, Monet, Van Gogh, and Picasso, are stored in Paris. Museums such as the Louvre, the Orsay, and the Centre Pompidou are also valued as architectural works themselves. Many other small museums, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Museums In Paris
There are around 130 museums in Paris, France, within city limits. This list also includes suburban museums within the "Grand Paris" area, such as the Air and Space Museum. The sixteen :fr: Musées de la Ville de Paris, museums of the City of Paris are annotated with "VP", as well as six other ones also accommodated in municipal premises and the :fr:Musée de France, Musées de France (fr) listed by the ministry of culture are annotated with "MF". List Paris Grand Paris Rest of Île de France Defunct museums Paris Paris région * Château de By, Musée Rosa Bonheur, premises mostly sold by the city in 2014 * Musée d’art naïf de Vicq en Île-de-France, closed in 2014 See also * Visitor attractions in Paris, List of visitor attractions in Paris * List of museums in France {{DEFAULTSORT:Museums In Paris Museums in Paris, * Lists of museums by city, Paris Paris-related lists Lists of museums in France, Paris ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Righi Oscillator
Righi may refer to: People Righi is an Italian surname. Notable people with the surname include: * Aldo Righi (born 1947), Italian pole vaulter * Andrea Righi (born 1979), Italian freestyle swimmer * Augusto Righi (1850–1920), Italian physicist * Daniele Righi (born 1976), Italian cyclist * Egano Righi-Lambertini (1906-2000), Italian Roman Catholic titular archbishop of Doclea and Vatican diplomat * Edoardo Righi (1926–2019), Italian athlete * Esteban Righi (1938–2019), Argentine lawyer and politician * Italo Righi (born 1959), Captain Regent of San Marino, from April 1, 2012 to October 1, 2012, with Maurizio Rattini * John Righi (1469–1539), Franciscan hermit * Ruth Righi (born 2005), American actress and singer * Stefano Righi (born 1960), Italian singer, songwriter, musician, record producer and actor * Tommaso Righi (1727–1802), Italian sculptor and stuccator with a practice in Rome * Vinícius Lopes Righi (born 1964), former Brazilian football player * Vittore Ugo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Receiver (radio)
In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna. The antenna intercepts radio waves (electromagnetic waves of radio frequency) and converts them to tiny alternating currents which are applied to the receiver, and the receiver extracts the desired information. The receiver uses electronic filters to separate the desired radio frequency signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation. Radio receivers are essential components of all systems that use radio. The information produced by the receiver may be in the form of sound, video (television), or digital data. A radio receiver may be a separate piece of electronic equipment, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio
Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by another antenna connected to a radio receiver. Radio is very widely used in modern technology, in radio communication, radar, radio navigation, remote control, remote sensing, and other applications. In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking, and satellite communication, among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal (impressing an information signal on the radio wave by varying some aspect of the wave) in the transmitter. In radar, used to locate and track objects like aircraft, ships, spacecraf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pacific and Indian Oceans. Its Metropolitan France, metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Due to its several coastal territories, France has the largest exclusive economic zone in the world. France borders Belgium, Luxembourg, Germany, Switzerland, Monaco, Italy, Andorra, and Spain in continental Europe, as well as the Kingdom of the Netherlands, Netherlands, Suriname, and Brazil in the Americas via its overseas territories in French Guiana and Saint Martin (island), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris
Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, fashion, gastronomy, and science. For its leading role in the arts and sciences, as well as its very early system of street lighting, in the 19th century it became known as "the City of Light". Like London, prior to the Second World War, it was also sometimes called the capital of the world. The City of Paris is the centre of the Île-de-France region, or Paris Region, with an estimated population of 12,262,544 in 2019, or about 19% of the population of France, making the region France's primate city. The Paris Region had a GDP of €739 billion ($743 billion) in 2019, which is the highest in Europe. According to the Economist Intelli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
