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Radar Gun
A radar speed gun, also known as a radar gun, speed gun, or speed trap gun, is a device used to measure the speed of moving objects. It is commonly used by police to check the speed of moving vehicles while conducting Traffic police, traffic enforcement, and in professional sports to measure speeds such as those of baseball Pitch (baseball), pitches, tennis Serve (tennis), serves, and cricket Bowling (cricket), bowls. A radar speed gun is a Doppler radar unit that may be handheld, vehicle-mounted, or static. It measures the speed of the objects at which it is pointed by detecting a change in frequency of the returned radar signal caused by the Doppler effect, whereby the frequency of the returned signal is increased in proportion to the object's speed of approach if the object is approaching, and lowered if the object is receding. Such devices are frequently used for speed limit enforcement, although more modern LIDAR speed gun instruments, which use pulsed laser light instead of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwalk, Connecticut
Norwalk is a city in Fairfield County, Connecticut, United States. The city, part of the New York metropolitan area, New York Metropolitan Area, is the List of municipalities of Connecticut by population, sixth-most populous city in Connecticut as of the 2020 United States census, 2020 census, with a population of 91,184. Norwalk is on the northern shore of Long Island Sound and was first settled in 1649. History Roger Ludlow purchased the areas east of the Norwalk River from Chief Mahackemo of the Norwaake (or Naramauke) Indians in 1640. Norwalk was settled in 1649, incorporated September 1651, and named after the Mohegan-Pequot language, Algonquin word , meaning "point of land", or more probably from the Native American name "Naramauke". The Battle of Norwalk took place during the Revolutionary War, and led to the burning of most of the town. In 1836, the borough of Norwalk was created, covering the central area of the town. In 1853, the first ever train disaster in the Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frequency
Frequency is the number of occurrences of a repeating event per unit of time. Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibratory phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light. The interval of time between events is called the period. It is the reciprocal of the frequency. For example, if a heart beats at a frequency of 120 times per minute (2 hertz), its period is one half of a second. Special definitions of frequency are used in certain contexts, such as the angular frequency in rotational or cyclical properties, when the rate of angular progress is measured. Spatial frequency is defined for properties that vary or cccur repeatedly in geometry or space. The unit of measurement of frequency in the International System of Units (SI) is the hertz, having the symbol Hz. Definitions and units For cyclical phenomena such as oscillations, waves, or for examp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Receiver
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 based on radio technology. 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 equ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmitter
In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna (radio), antenna with the purpose of signal transmission to a radio receiver. The transmitter itself generates a radio frequency alternating current, which is applied to the Antenna (radio), antenna. When excited by this alternating current, the antenna Electromagnetic radiation, radiates radio waves. Transmitters are necessary component parts of all electronic devices that communicate by radio communication, radio, such as radio broadcasting, radio (audio) and television broadcasting stations, cell phones, walkie-talkies, Wireless LAN, wireless computer networks, Bluetooth enabled devices, garage door openers, two-way radios in aircraft, ships, spacecraft, radar sets and navigational beacons. The term ''transmitter'' is usually limited to equipment that generates radio waves fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar Gun
A radar speed gun, also known as a radar gun, speed gun, or speed trap gun, is a device used to measure the speed of moving objects. It is commonly used by police to check the speed of moving vehicles while conducting Traffic police, traffic enforcement, and in professional sports to measure speeds such as those of baseball Pitch (baseball), pitches, tennis Serve (tennis), serves, and cricket Bowling (cricket), bowls. A radar speed gun is a Doppler radar unit that may be handheld, vehicle-mounted, or static. It measures the speed of the objects at which it is pointed by detecting a change in frequency of the returned radar signal caused by the Doppler effect, whereby the frequency of the returned signal is increased in proportion to the object's speed of approach if the object is approaching, and lowered if the object is receding. Such devices are frequently used for speed limit enforcement, although more modern LIDAR speed gun instruments, which use pulsed laser light instead of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garden City, New York
Garden City is a village located in Nassau County, on Long Island, in New York, United States. The population was 23,272 at the time of the 2020 census. The Incorporated Village of Garden City is primarily located within the Town of Hempstead, with the exception being a small area at the northern tip of the village located within the Town of North Hempstead. It is the Greater Garden City area's anchor community. History 19th century In 1869, Irish-born millionaire Alexander Turney Stewart bought a portion of the lightly populated Hempstead Plains. In a letter, Stewart described his intentions for Garden City: The central attraction of the new community was the Garden City Hotel. It was replaced by a new hotel in 1895, designed by the acclaimed firm of McKim, Mead & White. This hotel was destroyed by fire in 1899 and then rebuilt and expanded, before being replaced again in 1983. The hotel still stands on the original grounds, as do many nearby Victorian homes. Access ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glastonbury, Connecticut
Glastonbury ( ) is a town in the Capitol Planning Region, Connecticut, Capitol Planning Region, Connecticut, United States, formally founded in 1693 and first settled in 1636. It was named after Glastonbury in Somerset, England. Glastonbury is on the banks of the Connecticut River, southeast of Hartford, Connecticut, Hartford. The town center is defined by the U.S. Census Bureau as a census-designated place (CDP). The population was 35,159 at the 2020 United States census, 2020 census. History In 1636, 30 families settled in Pyaug, a tract of land belonging to Wethersfield, Connecticut, Wethersfield on the eastern bank of the Connecticut River, bought from the Native American Tribal chief, chief Sowheag for of trading cloth. In 1672, the General Court granted Wethersfield, Connecticut, Wethersfield and Hartford, Connecticut, Hartford permission to extend Pyaug's boundary line to the east. By 1690, Wethersfield had permitted Pyaug residents to form a separate town and, the to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Connecticut State Police
The Connecticut State Police (CSP) is the state police and highway patrol of the U.S. state of Connecticut, responsible for statewide traffic regulation and law enforcement, especially in areas not served by (or served by smaller) municipal police. It is a division of the Connecticut Department of Emergency Services and Public Protection. The CSP currently has about 875 troopers as of June 28, 2022, and is headquartered in Middletown, Connecticut. The Connecticut State Police is also responsible for protecting the Governor of Connecticut, Lieutenant Governor of Connecticut, and their families. History Early history The Connecticut State Police was created under House Bill #247 on May 29, 1903. Initially, five men, paid three dollars a day, were hired to enforce state liquor and vice laws, making it one of the oldest State Police forces in the nation. It was originally composed of five troopers primarily responsible for interdicting the production of moonshine. Early troopers tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merritt Parkway
The Merritt Parkway (also known locally as "The Merritt") is a controlled-access parkway in Fairfield County, Connecticut, with a small section at the northern end in New Haven County. Designed for Connecticut's Gold Coast, the parkway is known for its scenic layout, its uniquely styled signage, and the architecturally elaborate overpasses along the route. As one of the first, oldest parkways in the United States, it is designated as a National Scenic Byway and is also listed in the National Register of Historic Places. Signed as part of Route 15, it runs from the New York state line in Greenwich, where it serves to continue the Hutchinson River Parkway, to exit 37 in Milford, where the Wilbur Cross Parkway begins. Facing bitter opposition, the project took six years to build in three different sections, with the Connecticut Department of Transportation constantly requiring additional funding due to the area's high property value. The parkway was named for U.S. Cong ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bethpage, New York
Bethpage (formerly known as Central Park) is a Hamlet (New York), hamlet and census-designated place (CDP) located within the Oyster Bay (town), New York, Town of Oyster Bay in Nassau County, New York, Nassau County, on the South Shore (Long Island), South Shore of Long Island, in New York (state), New York, United States. The population was 16,658 at the 2020 United States census. History The name ''Bethpage'' comes from the Quakers, Quaker Thomas Powell (1641–1722), Thomas Powell, who named the area after the Biblical town Bethphage, which was between Jericho and Jerusalem in the Holy Land. Present-day Bethpage was part of the 1695 Bethpage Purchase. An early name for the northern section of present-day Bethpage was ''Bedelltown'', a name that appeared on maps at least as late as 1906. On maps just before the arrival of the Long Island Rail Road (LIRR), the name ''Bethpage'' appears for a community now included in both the post office district and school district of the ad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Consolidated PBY Catalina
The Consolidated Model 28, more commonly known as the PBY Catalina (U.S. Navy designation), is a flying boat and amphibious aircraft designed by Consolidated Aircraft in the 1930s and 1940s. In U.S. Army service, it was designated as the OA-10 and in Canadian service as the Canso, and it later received the NATO reporting name Mop. It was one of the most widely used seaplanes of World War II. Catalinas served with every branch of the United States Armed Forces and in the air forces and navies of many other nations. The last military PBYs served until the 1980s. As of 2021, 86 years after its first flight, the aircraft continues to fly as a Aerial firefighting#Water bombers, waterbomber (or airtanker) in aerial firefighting operations in some parts of the world. Design and development Background The PBY was originally designed to be a Maritime patrol aircraft, patrol bomber, an aircraft with a long operational Range (aeronautics), range intended to locate and attack enemy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
