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Airport Tunnel (Los Angeles)
The Airport Tunnel, also known as the Sepulveda Boulevard Tunnel, is a highway tunnel in Los Angeles, carrying Sepulveda Boulevard underneath the two runways (25L/25R) and taxiways on the south side of the Los Angeles International Airport (LAX). This section of Sepulveda is a part of California State Route 1. The tunnel was the first in the United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ... to run under an airport runway. History In the late-1940s, LAX (then known as Mines Field) was set to have its runways extended. However, Sepulveda Boulevard stood in the way, largely prohibiting the possibility of expansion. Initially, the thoroughfare was rerouted to go around the western end of the runways. In a move to allow Sepulveda Boulevard to return to its origina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles International Airport
Los Angeles International Airport is the primary international airport serving Los Angeles and its Greater Los Angeles, surrounding metropolitan area, in the U.S. state of California. LAX is located in the Westchester, Los Angeles, Westchester neighborhood of the city of Los Angeles, southwest of downtown Los Angeles, with the commercial and residential areas of Westchester to the north, the city of El Segundo, California, El Segundo to the south, and the city of Inglewood, California, Inglewood to the east. LAX is the closest airport to Westside (Los Angeles County), the Westside and the South Bay (Los Angeles County), South Bay. The airport is operated by Los Angeles World Airports (LAWA), a branch of the Government of Los Angeles, Los Angeles city government, that also operates the Van Nuys Airport for general aviation. The airport covers of land and has four parallel runways. In 2023, LAX handled 75,050,875 passengers, making it the List of busiest airports by passenger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bond (finance)
In finance, a bond is a type of Security (finance), security under which the issuer (debtor) owes the holder (creditor) a debt, and is obliged – depending on the terms – to provide cash flow to the creditor (e.g. repay the principal (i.e. amount borrowed) of the bond at the Maturity (finance), maturity date and interest (called the coupon (bond), coupon) over a specified amount of time.) The timing and the amount of cash flow provided varies, depending on the economic value that is emphasized upon, thus giving rise to different types of bonds. The interest is usually payable at fixed intervals: semiannual, annual, and less often at other periods. Thus, a bond is a form of loan or IOU. Bonds provide the borrower with external funds to finance long-term investments or, in the case of government bonds, to finance current expenditure. Bonds and Share capital, stocks are both Security (finance), securities, but the major difference between the two is that (capital) stockholders h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Tunnels In California
A road is a thoroughfare used primarily for movement of traffic. Roads differ from streets, whose primary use is local access. They also differ from stroads, which combine the features of streets and roads. Most modern roads are paved. The words "road" and "street" are commonly considered to be interchangeable, but the distinction is important in urban design. There are many types of roads, including parkways, avenues, controlled-access highways (freeways, motorways, and expressways), tollways, interstates, highways, and local roads. The primary features of roads include lanes, sidewalks (pavement), roadways (carriageways), medians, shoulders, verges, bike paths (cycle paths), and shared-use paths. Definitions Historically, many roads were simply recognizable routes without any formal construction or some maintenance. The Organization for Economic Co-operation and Development (OECD) defines a road as "a line of communication (travelled way) using a stabilized base other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnels In Los Angeles
A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ventilation openings at various points along the length. A pipeline differs significantly from a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a rapid transit network are usually in the tunnel. Some tunnels are used as sewers or aqueducts to supply water for consumption or for hydroelectric stations. Utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passage of people and equipment.Salazar, Waneta. ''Tunnels in Civil Engineering''. Delhi, India : Whit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LAX Color Tunnels
LAX color tunnels is a term used to describe decorative mosaic decor installed in several tunnels built in 1961 at the Los Angeles International Airport (LAX).* * Seven tunnels were created, three remain open to the public. Designed in the 1950s, the tunnels were envisioned by the architecture firm Pereira & Luckman Pereira & Luckman was a Los Angeles, California architectural firm that partners Charles Luckman and William Pereira founded in Los Angeles in 1950. They had been classmates at the University of Illinois’ School of Architecture and had each becom ..., to minimize the experienced distance of the tunnels.* * The work was overseen by Charles D. Kratka, the firm's head of interior design and they were designed by Janet Bennett, then a young artist on his team. The tiles were produced by Alfonso Pardinas of Byzantine Mosaics in San Francisco. Tunnels Seven color tunnels were created for LAX, , three remain open to the public: *Tunnel connecting Terminal 4 rotu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KNBC
KNBC (channel 4) is a television station in Los Angeles, California, United States, serving as the West Coast of the United States, West Coast flagship (broadcasting), flagship station of the NBC network. It is owned and operated by the network's NBC Owned Television Stations division alongside Corona, California, Corona-licensed Telemundo outlet KVEA (channel 52). The two stations share studios at the Brokaw News Center in the northwest corner of the Universal Studios Hollywood lot off Lankershim Boulevard in Universal City, California, Universal City; KNBC's transmitter is located on Mount Wilson (California), Mount Wilson. History Channel 4 first went on the air as KNBH (standing for "NBC Hollywood, Los Angeles, Hollywood") on January 16, 1949. It was the second-to-last VHF station in Los Angeles to debut, and the last of NBC's five original owned-and-operated stations to sign on. Unlike the other four, KNBH was the only NBC-owned television station that did not benefit from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exhaust Gas
Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline (petrol), diesel fuel, fuel oil, biodiesel blends, or coal. According to the type of engine, it is discharged into the atmosphere through an exhaust pipe, flue gas stack, or propelling nozzle. It often disperses downwind in a pattern called an ''exhaust plume''. It is a major component of motor vehicle emissions (and from stationary internal combustion engines), which can also include crankcase blow-by and evaporation of unused gasoline. Air pollution from burning fossil fuels is estimated to kill over 5 million people each year. Motor vehicle emissions are a common source of air pollution and are a major ingredient in the creation of smog in some large cities. Composition The largest part of most combustion gas is nitrogen (N2), water vapor (H2O) (except with pure-carbon fuels), and carbon dioxide (CO2) (except for fuels without carbon); these are not toxic or noxiou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LED Lamp
An LED lamp or LED light is an electric light that produces light using light-emitting diodes (LEDs). LED lamps are significantly more energy-efficient than equivalent incandescent lamps and fluorescent lamps. The most efficient commercially available LED lamps have efficiencies exceeding 200 lumens per watt (lm/W) and convert more than half the input power into light. Commercial LED lamps have a lifespan several times longer than both incandescent and fluorescent lamps. LED lamps require an electronic LED circuit to operate from mains power lines, and losses from this circuit means that the efficiency of the lamp is lower than the efficiency of the LED chips it uses. The driver circuit may require special features to be compatible with lamp dimmers intended for use on incandescent lamps. Generally the current waveform contains some amount of distortion, depending on the luminaires' technology. The LED lamp market is projected to grow from US$75.8 billion in 2020 to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sodium-vapor Lamp
A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. Two varieties of such lamps exist: low pressure, and high pressure. Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting, such as street lamps, where they are widely used. High-pressure sodium lamps emit a broader spectrum of light than the low-pressure lamps, but they still have poorer color rendering than other types of lamps. Low-pressure sodium lamps give only monochromatic yellow light, inhibiting color vision at night. Single ended self-starting lamps are insulated with a mica disc and contained in a borosilicate glass gas discharge tube (arc tube) with a metal cap. They include the sodium-vapor lamp that is the gas-discharge lamp used in street lighting. Development The low-pressure sodium arc discharge lamp was first made practical around ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fletcher Bowron
Fletcher Bowron (August 13, 1887 – September 11, 1968) was an American lawyer, judge, and politician. He was the 35th Mayor of Los Angeles from 1938 to 1953. A member of the Republican Party, he was at the time the city's longest-serving mayor and was the city's second longest-serving mayor overall after Tom Bradley, presiding over the war boom and very heavy population growth, and building freeways to handle them. Life and career Bowron was born in Poway, California, the youngest of three children. His Yankee parents, who had migrated from the Midwest, sent him to Los Angeles High School, where he graduated in 1904. In 1907, he began studies at UC Berkeley, where his two brothers had graduated, then enrolled in the University of Southern California Law School two years later where he became a member of the Delta Chi fraternity. He dropped out of law school and became a reporter for San Francisco, Oakland and Los Angeles newspapers, working the City Hall and court beats in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles, California
Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, cultural center of Southern California. With an estimated 3,878,704 residents within the city limits , it is the List of United States cities by population, second-most populous in the United States, behind only New York City. Los Angeles has an Ethnic groups in Los Angeles, ethnically and culturally diverse population, and is the principal city of a Metropolitan statistical areas, metropolitan area of 12.9 million people (2024). Greater Los Angeles, a combined statistical area that includes the Los Angeles and Riverside–San Bernardino metropolitan areas, is a sprawling metropolis of over 18.5 million residents. The majority of the city proper lies in Los Angeles Basin, a basin in Southern California adjacent to the Pacific Ocean in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
