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Louis Winslow Austin
Louis Winslow Austin (October 30, 1867 – June 27, 1932) was an American physicist known for his research on long-range radio transmissions. Austin was born in Orwell, Vermont, and educated at Middlebury College (class of 1889) and the University of Strasbourg (then in Germany), from which he received a Ph.D. in 1893. From 1893-1901, he taught physics as an instructor and assistant professor at the University of Wisconsin–Madison, then returned to Germany for two years at the Physikalisch-Technische Reichsanstalt in Berlin where he performed research on hot gases. In 1904 Austin joined the National Bureau of Standards to study radio propagation. After the United States Navy established its Naval Radio Telegraphic Laboratory (later the Naval Research Laboratory) within the bureau, Austin served as its director from 1908–1923, and from 1923-1932 as chief of the Radio Physics Laboratory. Austin's research focused on radio propagation and static, and more specifically the inf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orwell, Vermont
Orwell is a town in Addison County, Vermont, United States. The population was 1,239 at the 2020 census. Mount Independence was the largest fortification constructed by the American colonial forces. The site is now one of Vermont's premier state-operated historic sites. Geography Orwell is located in the southwest corner of Addison County. Its western border is the New York–Vermont state line, following the middle of Lake Champlain, near the lake's southern end. Orwell is bordered by the town of Shoreham to the north, Whiting to the northeast, Sudbury to the east and southeast, and Benson to the south. Sudbury and Benson are within Rutland County. To the west, across Lake Champlain, are the town of Putnam, New York, in Washington County, and Ticonderoga, New York, in Essex County. Mount Independence, elevation , is located in northwest Orwell, overlooking Lake Champlain and the town of Ticonderoga. According to the United States Census Bureau, Orwell has a total area of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Propagation
Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another in vacuum, or into various parts of the atmosphere. As a form of electromagnetic radiation, like light waves, radio waves are affected by the phenomena of reflection, refraction, diffraction, absorption, polarization, and scattering. Understanding the effects of varying conditions on radio propagation has many practical applications, from choosing frequencies for amateur radio communications, international shortwave broadcasters, to designing reliable mobile telephone systems, to radio navigation, to operation of radar systems. Several different types of propagation are used in practical radio transmission systems. ''Line-of-sight propagation'' means radio waves which travel in a straight line from the transmitting antenna to the receiving antenna. Line of sight transmission is used for medium-distance radio transmission, such as cell phones, cordless phones, wal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manchester (town), Vermont
Manchester is a New England town, town in, and one of two shire towns (county seats) of, Bennington County, Vermont. The population was 4,484 at the 2020 United States Census, 2020 census. Manchester (village), Vermont, Manchester Village, an incorporated village, and Manchester Center, Vermont, Manchester Center are settlement centers within the town. Manchester has become a tourist destination, especially for those from New York (state), New York and Connecticut, offering visitors factory outlet stores of national chain retailers such as Brooks Brothers, Kate Spade and Ralph Lauren, as well as many locally owned businesses, including the Northshire Bookstore, an independent bookstore. History The town was one of several chartered in 1761 by Benning Wentworth, colonial governor of Province of New Hampshire, New Hampshire. It was his custom to name new towns after prominent England, English aristocrats of the day, hoping they might adopt a patronly interest in their namesakes. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEEE
The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operations center in Piscataway, New Jersey. The mission of the IEEE is ''advancing technology for the benefit of humanity''. The IEEE was formed from the amalgamation of the American Institute of Electrical Engineers and the Institute of Radio Engineers in 1963. Due to its expansion of scope into so many related fields, it is simply referred to by the letters I-E-E-E (pronounced I-triple-E), except on legal business documents. , it is the world's largest association of technical professionals with more than 423,000 members in over 160 countries around the world. Its objectives are the educational and technical advancement of electrical and electronic engineering, telecommunications, computer engineering and similar disciplines. History Ori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brant Rock, Massachusetts
Ocean Bluff-Brant Rock is a census-designated place (CDP) in Plymouth County, Massachusetts, United States, composed of the neighborhoods of Ocean Bluff, Brant Rock, Fieldston, and Rexhame in the town of Marshfield. The population of the CDP was 4,970 at the 2010 census. History Brant Rock and Ocean Bluff were originally inhabited by Native Americans, including members of the Wampanoag tribe of the Algonquian peoples. Native American artifacts have been found extensively in the area. The main road through the area, known today as Ocean Street, is a Native American road, likely very ancient. The area at the end of Brant Rock village, known as Blackman's Point, was a Native American campground. In the 1630s, the government of the Pilgrim settlers at Plymouth began to give out land grants in the area. The Ocean Bluff area was first granted to the governor of the Pilgrims. It was known by about 1638 as "Governor's Island.” Later on in the 17th century, it became known as "W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reginald Fessenden
Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father. During his life he received hundreds of patents in various fields, most notably ones related to radio and sonar. Fessenden is best known for his pioneering work developing radio technology, including the foundations of amplitude modulation (AM) radio. His achievements included the first transmission of speech by radio (1900), and the first two-way radiotelegraphic communication across the Atlantic Ocean (1906). In 1932 he reported that, in late 1906, he also made the first radio broadcast of entertainment and music, although a lack of verifiable details has led to some doubts about this claim. Early years Reginald Fessenden was born October 6, 1866, in East Bolton, Quebec, the eldest of the Reverend Elisha Joseph Fessenden and Clementina Trenholme's four children. Elis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liberia
Liberia (), officially the Republic of Liberia, is a country on the West African coast. It is bordered by Sierra Leone to its northwest, Guinea to its north, Ivory Coast to its east, and the Atlantic Ocean to its south and southwest. It has a population of around 5 million and covers an area of . English is the official language, but over 20 indigenous languages are spoken, reflecting the country's ethnic and cultural diversity. The country's capital and largest city is Monrovia. Liberia began in the early 19th century as a project of the American Colonization Society (ACS), which believed black people would face better chances for freedom and prosperity in Africa than in the United States. Between 1822 and the outbreak of the American Civil War in 1861, more than 15,000 freed and free-born black people who faced social and legal oppression in the U.S., along with 3,198 Afro-Caribbeans, relocated to Liberia. Gradually developing an Americo-Liberian identity, the se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Salem (CL-3)
USS ''Salem'' (CS-3/CL-3), Scout Cruiser No. 3, was a scout cruiser of the United States Navy. She was the first Navy ship named for the city of Salem, Massachusetts. ''Salem'' was laid down on 28 August 1905, by the Fore River Shipyard; launched on 27 July 1907, sponsored by Mrs. Lorna Pinnock; and commissioned on 1 August 1908. Pre-World War I As one of the Navy's first turbine-engined warships, ''Salem'' departed Boston on 17 October 1908 to carry out extensive trials along the Atlantic coast. Joining her sister ships, and , in the Scout Cruiser Division in June 1909, ''Salem'' cruised in the Atlantic, making one voyage to Funchal, Madeira. Assigned to the 5th Division, Atlantic Fleet, in, 1910, ''Salem'' briefly deployed to Haitian waters during August 1911, returning to the New York Navy Yard on 11 September. Subsequently placed in reserve at the Boston Navy Yard on 20 April 1912, ''Salem'' relieved as receiving ship there on that date and served until 7 October. Then ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Birmingham (CL-2)
USS ''Birmingham'' (CS-2/CL-2), named for the city of Birmingham, Alabama, was a scout cruiser, reclassified a light cruiser in 1920. Entering service in 1908, the ship became known for the first airplane takeoff from a ship in history in 1910. During World War I, ''Birmingham'' escorted convoys across the Atlantic. The cruiser was decommissioned in 1923 and sold for scrap in 1930. Construction and career The cruiser was laid down by the Fore River Shipbuilding Company at Quincy, Massachusetts, on 14 August 1905, and launched on 29 May 1907; sponsored by Miss Mary Campbell. ''Birmingham'' was commissioned on 11 April 1908, Commander Burns Tracy Walling in command. ''Birmingham'' served with the Atlantic Fleet until 27 June 1911, and went into reserve at Boston three days later. One of her sailors, Chief Electrician William E. Snyder, received the Medal of Honor for rescuing a shipmate from drowning on 4 January 1910. From ''Birmingham''s deck, civilian pilot Eugene Ely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sunspot
Sunspots are phenomena on the Sun's photosphere that appear as temporary spots that are darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic flux that inhibit convection. Sunspots appear within active regions, usually in pairs of opposite magnetic polarity. Their number varies according to the approximately 11-year solar cycle. Individual sunspots or groups of sunspots may last anywhere from a few days to a few months, but eventually decay. Sunspots expand and contract as they move across the surface of the Sun, with diameters ranging from to . Larger sunspots can be visible from Earth without the aid of a telescope. They may travel at relative speeds, or proper motions, of a few hundred meters per second when they first emerge. Indicating intense magnetic activity, sunspots accompany other active region phenomena such as coronal loops, prominences, and reconnection events. Most solar flares and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Storm
A geomagnetic storm, also known as a magnetic storm, is a temporary disturbance of the Earth's magnetosphere caused by a solar wind shock wave and/or cloud of magnetic field that interacts with the Earth's magnetic field. The disturbance that drives the magnetic storm may be a solar coronal mass ejection (CME) or (much less severely) a co-rotating interaction region (CIR), a high-speed stream of solar wind originating from a coronal hole. The frequency of geomagnetic storms increases and decreases with the sunspot cycle. During solar maximum, geomagnetic storms occur more often, with the majority driven by CMEs. The increase in the solar wind pressure initially compresses the magnetosphere. The solar wind's magnetic field interacts with the Earth's magnetic field and transfers an increased energy into the magnetosphere. Both interactions cause an increase in plasma movement through the magnetosphere (driven by increased electric fields inside the magnetosphere) and an increa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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