|
Amperex Electronic
Amperex Electronic Corporation was a manufacturer of vacuum tubes and semiconductors.Knight (2007) Brooklyn, New York Originally located at 79 Washington Street in Brooklyn, New York, Amperex was a long-established manufacturer of transmitting tubes when they were acquired by the Dutch firm, Philips, (known more widely as Norelco in the US), around 1955. Philips continued to improve and enlarge the tube plant in New York, but also used the Amperex name to distribute their new line of Dutch-made miniature tubes, (12AX7, 12AU7, 12AT7) to feed the booming U.S. hi-fi market. Classic hi-fi brands such as Marantz, Fisher, and H. H. Scott, Inc., used these tubes. Amperex also produced the 6DJ8, 6922 and 7308 frame grid tubes. Developed by Amperex in 1958 when transistors were beginning to supplant tubes and originally developed for video and radar use, the 6DJ8 also excelled in audio amplifiers needing its high transconductance, and it still has a niche market among audiophiles. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amperex Hicksville
Amperex Electronic Corporation was a manufacturer of vacuum tubes and semiconductors.Knight (2007) Brooklyn, New York Originally located at 79 Washington Street in Brooklyn, New York, Amperex was a long-established manufacturer of transmitting tubes when they were acquired by the Dutch firm, Philips, (known more widely as Norelco in the US), around 1955. Philips continued to improve and enlarge the tube plant in New York, but also used the Amperex name to distribute their new line of Dutch-made miniature tubes, (12AX7, 12AU7, 12AT7) to feed the booming U.S. High fidelity, hi-fi market. Classic hi-fi brands such as Marantz, Fisher, and H. H. Scott, Inc., used these tubes. Amperex also produced the 6DJ8, 6922 and 7308 frame grid tubes. Developed by Amperex in 1958 when transistors were beginning to supplant tubes and originally developed for video and radar use, the 6DJ8 also excelled in audio amplifiers needing its high transconductance, and it still has a niche market among audio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emmy Award
The Emmy Awards, or Emmys, are an extensive range of awards for artistic and technical merit for the American and international television industry. A number of annual Emmy Award ceremonies are held throughout the calendar year, each with their own set of rules and award categories. The two events that receive the most media coverage are the Primetime Emmy Awards and the Daytime Emmy Awards, which recognize outstanding work in American primetime and daytime entertainment programming, respectively. Other notable U.S. national Emmy events include the Children's & Family Emmy Awards for children's and family-oriented television programming, the Sports Emmy Awards for sports programming, News & Documentary Emmy Awards for news and documentary shows, and the Technology & Engineering Emmy Awards and the Primetime Engineering Emmy Awards for technological and engineering achievements. Regional Emmy Awards are also presented throughout the country at various times through the year, re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Video Camera Tube
Video camera tubes were devices based on the cathode ray tube that were used in television cameras to capture television images, prior to the introduction of charge-coupled device (CCD) image sensors in the 1980s. Several different types of tubes were in use from the early 1930s, and as late as the 1990s. In these tubes, an electron beam was scanned across an image of the scene to be broadcast focused on a target. This generated a current that was dependent on the brightness of the image on the target at the scan point. The size of the striking ray was tiny compared to the size of the target, allowing 483 horizontal scan lines per image in the NTSC format, 576 lines in PAL, and as many as 1035 lines in Hi-Vision. Cathode ray tube Any vacuum tube which operates using a focused beam of electrons, originally called cathode rays, is known as a cathode ray tube (CRT). These are usually seen as display devices as used in older (i.e., non-flat panel) television receivers and computer d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alloy-junction Transistor
The germanium alloy-junction transistor, or alloy transistor, was an early type of bipolar junction transistor, developed at General Electric and RCA in 1951 as an improvement over the earlier grown-junction transistor. The usual construction of an alloy-junction transistor is a germanium crystal forming the base, with emitter and collector alloy beads fused on opposite sides. Indium and antimony were commonly used to form the alloy junctions on a bar of N-type germanium. The collector junction pellet would be about 50 mils (thousandths of an inch) in diameter, and the emitter pellet about 20 mils. The base region would be on the order of 1 mil (0.001 inches, 25 μm) thick. There were several types of improved alloy-junction transistors developed over the years that they were manufactured. All types of alloy-junction transistors became obsolete in the early 1960s, with the introduction of the planar transistor which could be mass-produced easily while alloy-junction transistor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germanium
Germanium is a chemical element with the symbol Ge and atomic number 32. It is lustrous, hard-brittle, grayish-white and similar in appearance to silicon. It is a metalloid in the carbon group that is chemically similar to its group neighbors silicon and tin. Like silicon, germanium naturally reacts and forms complexes with oxygen in nature. Because it seldom appears in high concentration, germanium was discovered comparatively late in the discovery of the elements. Germanium ranks near fiftieth in relative abundance of the elements in the Earth's crust. In 1869, Dmitri Mendeleev predicted its existence and some of its properties from its position on his periodic table, and called the element ekasilicon. In 1886, Clemens Winkler at Freiberg University found the new element, along with silver and sulfur, in the mineral argyrodite. Winkler named the element after his country, Germany. Germanium is mined primarily from sphalerite (the primary ore of zinc), though germanium is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slatersville, Rhode Island
Slatersville is a village on the Branch River in the town of North Smithfield, Rhode Island, United States. It includes the Slatersville Historic District, a historic district listed on the National Register of Historic Places. The historic district has been included as part of the Blackstone River Valley National Historical Park. The North Smithfield Public Library is located in Slatersville. Slatersville was associated with and named for Samuel Slater and John Slater, members of the well-known Slater family. In the late nineteenth century, the Woonsocket and Pascoag Railroad was built through the village, and the line was later acquired by the Providence and Worcester Railroad and run as a freight rail line terminating in Slatersville near a steel distributor by the Slater Mill, rather than its former endpoint in Pascoag. History The region was originally settled in the 17th century by British colonists as a farming community. The village was founded in 1803 by entreprene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Smithfield, Rhode Island
North Smithfield is a town in Providence County, Rhode Island, United States, settled as a farming community in 1666 and incorporated into its present form in 1871. North Smithfield includes the historic villages of Forestdale, Primrose, Waterford, Branch Village, Union Village, Park Square, and Slatersville. The population was 12,588 at the 2020 census. Geography According to the United States Census Bureau, the town has a total area of , of which is land and (2.83%) is water. North Smithfield is in a New England upland region. The Branch River and Blackstone Rivers provided much of the power for the early mills in the town. The town consists mainly of temperate forests, with minor elevation changes. At , Woonsocket Hill in North Smithfield is one of the highest points in Rhode Island. Residents can expect mild summers and harsh winters. History In the 17th century British colonists settled in North Smithfield developing a farming community that they named after Smithfi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Meadow, New York
East Meadow is a hamlet and census-designated place (CDP) in the Town of Hempstead in Nassau County, on Long Island, in New York. The population was 38,132 at the 2010 census. Many residents commute to Manhattan, which is away. History In 1655, two surveyors for Hempstead reported that the "east meadow" would be suitable for grazing. The area quickly became a grazing area for cattle and later, in the 18th century, for sheep. The sheep of the East Meadow area provided the country with more than 50% of the United States' wool needs during that time. During the American Revolutionary War, East Meadow was occupied by British forces when they discovered the vast amounts of livestock herded there, and remained under their control until the end of the war. Two large farms existed in what is now East Meadow: the Barnum farm (Barnum Woods), and the Carman farm. It is rumored that President George Washington spent a night on the Barnum estate during a trip across Long Island in 1790 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eisenhower Park
Eisenhower Park, formerly known as Salisbury Park, is a public park in East Meadow, New York bordered by Hempstead Turnpike on the south and Old Country Road on the north. At , it is larger than Central Park (in Manhattan, New York City), with much of the area devoted to three 18-hole golf courses, including the Red Course, host to the annual Commerce Bank Championship (Champions Tour). The park is home to the September 11th Memorial for residents of Nassau County. History Part of the county park system since 1944, Eisenhower Park offers a full range of athletic and family activities, including some of the finest facilities in Nassau County and an exciting schedule of summertime events. In the early part of the 20th century, the park was part of the private Salisbury Country Club and included five 18-hole golf courses. It hosted the ninth PGA Championship in 1926, then a match play competition. Walter Hagen defeated future two-time champion Leo Diegel 5 & 3 in the finals to wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
