William Forsythe: Forsythe’s new company, the Forsythe Company, was about half the size of the Frankfurt Ballet, but nearly all of its dancers were from that company. Forsythe continued to present his vision to a wide audience. With bases in Frankfurt and Dresden and supported by both state and private funding,…

Oskar Kokoschka: Maturity of Oskar Kokoschka: …1920 he wrote the “Dresden Manifesto,” which denounced all militancy in politics for its lack of human concern. Political and humanitarian themes disappeared for several years from his writing and art.

Meissen porcelain, German hard-paste, or true, porcelain produced at the Meissen factory, near Dresden in Saxony (now Germany), from 1710 until the present day. It was the first successfully produced true porcelain in Europe and dominated the style of European porcelain manufactured until about

Staatliche Kunstsammlungen Dresden, state-owned art collection in Dresden, Germany, housed in 15 museums throughout the city. Locations include the Zwinger, which exhibits such collections as the Gemäldegalerie Alter Meister (Old Masters Picture Gallery); the Albertinum, home to the Galerie Neue

Battle of Dresden, (Aug. 26–27, 1813), Napoleon’s last major victory in Germany. It was fought on the outskirts of the Saxon capital of Dresden, between Napoleon’s 120,000 troops and 170,000 Austrians, Prussians, and Russians under Prince Karl Philipp Schwarzenberg. (See “Napoleon’s Major Battles”

bombing of Dresden, during World War II, Allied bombing raids on February 13–15, 1945, that almost completely destroyed the German city of Dresden. The raids became a symbol of the “terror bombing” campaign against Germany, which was one of the most controversial Allied actions of the war.

Dresden: History: The Treaty of Dresden (1745), between Prussia, Saxony, and Austria, ended the second Silesian War and confirmed Silesia as Prussian. Two-thirds destroyed in the Seven Years’ War (1756–63), Dresden’s fortifications were later dismantled. In 1813 Napoleon I made the town a centre of military operations and…

Dresdner Bank AG, commercial bank based in Frankfurt am Main, Germany, with operations in more than 70 countries. It was established in 1872 in Dresden as Dresdner Bank, and in 1884 its main office was relocated to Berlin. In 1952 the bank was split into three: Rhein-Main Bank AG, Hamburger

dress, clothing and accessories for the human body. The variety of dress is immense. The style that a particular individual selects is often linked to that person’s sex, age, socioeconomic status, culture, geographic area, and historical era. This article considers the chronological development of

Vanity Fair, American magazine that covers culture, fashion, and politics. The first version of the magazine appeared in Manhattan in 1859. It was reintroduced by Condé Nast Publications in 1914. Three different versions of Vanity Fair magazine existed during the 1800s: a humorous Manhattan-based

While the most frequent debate about dress codes center on K–12 schools, dress codes impact just about everyone’s daily life. From the “no shirt, no shoes, no service” signs (which exploded in popularity in the 1960s and ’70s in reaction to the rise of hippies) to COVID-19 pandemic mask mandates,

David Sedaris: In his next book, Dress Your Family in Corduroy and Denim (2004), Sedaris, by elucidating with a surgeon’s skill the countless gaps and crossed wires in each interaction he described, demonstrated once again the hilarious absurdity lurking beneath the veneer of ordinariness. His recording of pieces from the book…

dressage, systematic and progressive training of riding horses to execute precisely any of a wide range of maneuvers, from the simplest riding gaits to the most intricate and difficult airs and figures of haute école (“high school”). Dressage achieves balance, suppleness, and obedience with the

horsemanship: Dressage seat: In the show and dressage seat the rider sinks deep into the saddle, in a supple, relaxed but erect position above it. The saddle flaps are practically straight so as to show as much expanse of the horse’s front as possible. The stirrup…

Brian De Palma: The 1980s and ’90s: …wrote and directed the controversial Dressed to Kill (1980). Angie Dickinson starred as a sexually frustrated Manhattan housewife who, after sleeping with a stranger, is brutally murdered—in a chilling elevator sequence that recalls the famous shower scene from Psycho—and the search begins to find her killer. Nancy Allen, De Palma’s…

Kiss: Breakthrough: …Hotter than Hell (1974) and Dressed to Kill (1975), neither of which sold well, continuing the group’s disappointing run of studio album sales and furthering a financial crisis for Casablanca Records. Instead of paying for another studio album, the label decided to release a live record, hoping to capture the…

Basil Rathbone: …making his final Holmes film, Dressed to Kill (1946), Rathbone moved to New York to work onstage and later in television. As he feared, his close association with the Holmes character damaged his chances of receiving choice movie roles, and he spent most of the rest of his film career…

Caeleb Dressel is one of the world’s elite swimmers, known as a sprint specialist for his performances in the 50 meters and 100 meters. He has nine Olympic gold medals, five of which were won at the 2020 Tokyo Games (delayed until 2021 because of the COVID-19 pandemic). With his numerous tattoos,

Caeleb Dressel is one of the world’s elite swimmers, known as a sprint specialist for his performances in the 50 meters and 100 meters. He has nine Olympic gold medals, five of which were won at the 2020 Tokyo Games (delayed until 2021 because of the COVID-19 pandemic). With his numerous tattoos,

dresser, a cupboard used for the display of fine tableware, such as silver, pewter, or earthenware. Dressers were widely used in England beginning in Tudor times, when they were no more than a side table occasionally fitted with a row of drawers. The front stood on three or five turned (shaped on a

Christopher Dresser was an English designer whose knowledge of past styles and experience with modern manufacturing processes made him a pioneer in professional design. Dresser studied at the School of Design in London (1847–54), where in 1855 he was appointed professor of artistic botany. In 1858

New Thought: Origins of New Thought: …of Quimbian New Thought were Julius Dresser (1838–93), a popular lecturer, and his son Horatio (1866–1954), who spread the elder Dresser’s teachings and later edited The Quimby Manuscripts (1921). The extent of Quimby’s influence on Mary Baker Eddy, the founder of Christian Science, was a matter of controversy in the…

Terre Haute: …and his brother, the composer Paul Dresser (“On the Banks of the Wabash”), were born in Terre Haute; the latter’s birthplace is preserved as a state shrine and memorial, and a pair of bridges over the Wabash are named for the brothers. The Sheldon Swope Art Museum exhibits American works…

Albert Finney: …an aging Shakespearean actor in The Dresser (1983), an alcoholic in Under the Volcano (1984), and a gruff attorney in Erin Brockovich (2000).

therapeutics: Wound treatment: Dressings protect the wound from external contamination and facilitate absorption of drainage. Because a surgical wound is most susceptible to surface contamination during the first 24 hours, an occlusive dressing is applied, consisting of gauze held in place by tape. Materials such as transparent semipermeable…

history of Europe: Control over resources: …mining techniques and needed initial roasting before smelting. At the same time, they were more widely available than surface deposits, and there were sources in both central and western Europe—ores in Germany, Austria, and the Czech and Slovak Republics were exploited from the early 3rd millennium bce. This long initial…

fur: …in processing raw pelts is dressing. The dressing of furs involves several steps, the exact number of which is determined by the particular fur being dressed. Generally speaking, a fur is cleaned, softened, fleshed (extraneous flesh is removed), and stretched. The skin is tanned by a process called leathering. Many…

dressing table, a table used for the toilet. The term originally was applied in the 17th century to small tables with two or three drawers. It soon became common practice to conceal the fittings of the dressing table when they were not in use, and great ingenuity was exercised by 18th-century

Marie Dressler was a Canadian-born comedian and singer who achieved her greatest success toward the end of her life. Dressler was the daughter of a piano teacher and early in life discovered her ability to make audiences laugh. She made her stage debut in Michigan in 1886 and then performed for

Joan Plowright: Film and TV: …Dick (1956), Equus (1977), and The Dressmaker (1988). For her role as a haughty know-it-all in Enchanted April (1991), Plowright was nominated for a best supporting actress Academy Award. In 1992 she earned acclaim for the HBO TV movie Stalin, in which she portrayed Joseph Stalin’s mother-in-law. Plowright later played…

dress, clothing and accessories for the human body. The variety of dress is immense. The style that a particular individual selects is often linked to that person’s sex, age, socioeconomic status, culture, geographic area, and historical era. This article considers the chronological development of

dresser, a cupboard used for the display of fine tableware, such as silver, pewter, or earthenware. Dressers were widely used in England beginning in Tudor times, when they were no more than a side table occasionally fitted with a row of drawers. The front stood on three or five turned (shaped on a

Dreux, town, Eure-et-Loir département, Centre région, north-central France. It lies along the Blaise River, northwest of Chartres. Known to the Romans as Drocae, it was held by the Durocasses, a Gallic tribe. It gave its name to a medieval family of counts. François, duc de Guise, defeated the

France: The Wars of Religion: After the Battle of Dreux (December 1562) the war drew to a close, despite the assassination of the duc de Guise by a Protestant fanatic. A compromise was reached at the Peace of Amboise in March 1563: liberty of conscience was granted to the Huguenots, but the…

Capetian dynasty: …(1032–1361 and 1363–1477); the Capetian house of Dreux, a line of dukes of Brittany (1213–1488); three Capetian emperors of Constantinople (1216–61), of the house of Courtenay; various counts of Artois (from 1237), with controversial succession; the first Capetian house of Anjou, with kings and queens of Naples (1266–1435) and kings…

Kip Thorne: …in 1979 recruited Scottish physicist Ronald Drever to Caltech. Drever had been working on laser interferometers to detect gravity waves. The interferometer is shaped like an L. Laser beams are sent down each arm of the L to mirrors at the end. Usually, when the light returns to the corner,…

Nadezhda Andreyevna Udaltsova: …with her husband, the painter Aleksandr Drevin, in 1929–32. These landscapes, which she painted in an Expressionistic style clearly influenced by Drevin, were Udaltsova’s last major success. In January 1938 Drevin was arrested on political charges and was executed shortly after. (Her father, a retired general, had been executed by…

Moorish Science Temple of America: …(1886–1929), known to followers as Noble Drew Ali and also as the Prophet. Drew Ali taught that all blacks were of Moorish origins but had their Muslim identity taken away from them through slavery and racial segregation. He advocated that they should “return” to the Islam of their Moorish forefathers,…

Drew Barrymore: Later career: …following year she began hosting The Drew Barrymore Show, a daytime talk show that aired on CBS.

Shirley Jones: …The Slap Maxwell Story (1987–88), The Drew Carey Show (1995–2004), and Raising Hope (2010–14), and in 2008 she appeared in a story arc on the soap opera Days of Our Lives. In addition, she performed in the film Grandma’s Boy (2006) as well as the TV movie The Irresistible Blueberry…

Drew family, American theatre family. Louisa Lane (later Louisa Lane Drew; 1820–97) began her stage career at age eight in Philadelphia, where her widowed mother had brought her from England. Her many successful parts included Lady Teazle, Mrs. Malaprop, and such “breeches” roles as Shakespeare’s

Drew University, private, coeducational institution of higher learning in Madison, New Jersey, U.S., affiliated with the United Methodist Church. The school was founded in 1867 as Drew Theological Seminary. A College of Liberal Arts was added in 1928, and the name was changed to Drew University.

Drew University, private, coeducational institution of higher learning in Madison, New Jersey, U.S., affiliated with the United Methodist Church. The school was founded in 1867 as Drew Theological Seminary. A College of Liberal Arts was added in 1928, and the name was changed to Drew University.

Charles Richard Drew was an African American physician and surgeon who was an authority on the preservation of human blood for transfusion. Drew was educated at Amherst College (graduated 1926), McGill University, Montreal (1933), and Columbia University (1940). While earning his doctorate at

Jane Drew was a British architect who, with her husband, Maxwell Fry, was a forerunner in the field of modern tropical building and town planning. She paid great attention to the harmony of design with the environment, a characteristic that made her one of Great Britain’s best-loved architects.

Daniel Drew was an American railway financier of the 19th-century “robber baron” era. After a successful career as a cattle trader, Drew bought an interest in a New York-to-Peekskill steamboat in 1834 and six years later established the People’s Line. He also bought control of the Stonington Line

Georgiana Barrymore was an actress and, with Maurice Barrymore, founder of the famous stage and screen family Barrymore, which occupied a preeminent position in American theatre in the first half of the 20th century. Georgiana Drew was the daughter of John Drew and Louisa Lane Drew, both

Jane Drew was a British architect who, with her husband, Maxwell Fry, was a forerunner in the field of modern tropical building and town planning. She paid great attention to the harmony of design with the environment, a characteristic that made her one of Great Britain’s best-loved architects.

John Drew, Jr. was an American actor noted for his roles in Shakespearean comedy, society drama, and light comedies. Drew was the eldest son of John and Louisa Lane Drew, who were actors and managers. He first appeared on the stage in 1873 under his mother’s management. In 1875 Drew made his New

John Drew, Sr. was a theatrical manager and leading American actor of Irish romantic comedy. One of his best roles was as Gerald Pepper in Samuel Lover’s White House of the Peppers. After a brief career as a seaman, Drew turned to the stage, making his New York debut sometime between 1842 and 1846.

Louisa Lane Drew was a noted American actress and manager of Mrs. John Drew’s Arch Street Theatre company in Philadelphia, which was one of the finest in American theatre history. Louisa Lane was the daughter of actors and at an early age began playing child parts. In June 1827 she arrived in New

Nancy Drew, fictional teenage amateur detective in an extended series of mystery books written by Carolyn Keene (a collective pseudonym, used by Edward Stratemeyer and, among many others, by his daughter Harriet S. Adams). Nancy Drew’s intelligence, courage, and independence made her a popular role

Moorish Science Temple of America: …(1886–1929), known to followers as Noble Drew Ali and also as the Prophet. Drew Ali taught that all blacks were of Moorish origins but had their Muslim identity taken away from them through slavery and racial segregation. He advocated that they should “return” to the Islam of their Moorish forefathers,…

Eugen Drewermann is a German theologian, psychotherapist, and Roman Catholic priest whose innovations in points of Catholic dogma led to his suspension from the priesthood and his eventual withdrawal from the church. Drewermann studied philosophy at the University of Münster, theology in Paderborn,

Anthony Joseph Drexel: …their father’s banking house of Drexel and Company in Philadelphia, Anthony and his brothers transformed it into an investment-banking concern. In 1871 they organized Drexel, Morgan and Company of New York City and Drexel, Harjes and Company in Paris. Anthony specialized in flotation of government bonds, railroad organization, mining development,…

Ivan Boesky: …of Milken and his firm, Drexel Burnham Lambert. Both Drexel and Milken later entered guilty pleas to securities-law violations.

Drexel University, private, coeducational institution of higher learning in Philadelphia, Pennsylvania, U.S. It consists of the colleges of Arts and Sciences, Business and Administration, Engineering, and Information Science and Technology, as well as the Nesbitt College of Design Arts. In addition

Drexel University, private, coeducational institution of higher learning in Philadelphia, Pennsylvania, U.S. It consists of the colleges of Arts and Sciences, Business and Administration, Engineering, and Information Science and Technology, as well as the Nesbitt College of Design Arts. In addition

Drexel University, private, coeducational institution of higher learning in Philadelphia, Pennsylvania, U.S. It consists of the colleges of Arts and Sciences, Business and Administration, Engineering, and Information Science and Technology, as well as the Nesbitt College of Design Arts. In addition

Anthony Joseph Drexel was an American banker and philanthropist who founded the Drexel Institute of Technology in Philadelphia. Upon inheriting their father’s banking house of Drexel and Company in Philadelphia, Anthony and his brothers transformed it into an investment-banking concern. In 1871

St. Katharine Drexel: …the American financier and philanthropist Francis Anthony Drexel. Her mother, Hannah Langstroth, died five weeks after Katharine was born, and Katharine and her sister were cared for by their aunt and uncle until their father remarried in 1860. The family was active in charitable works and distributed food, clothing, and…

St. Katharine Drexel ; feast day [U.S.] March 3) was the American founder of the Blessed Sacrament Sisters for Indians and Colored People (now Sisters of the Blessed Sacrament), a congregation of missionary nuns dedicated to the welfare of American Indians and African Americans. She is the patron

Nazi Party: Founding of the Nazi Party and the Beer Hall Putsch: …the German Workers’ Party by Anton Drexler, a Munich locksmith, in 1919. Hitler attended one of its meetings that year, and before long his energy and oratorical skills would enable him to take over the party, which was renamed National Socialist German Workers’ Party in 1920. That year Hitler also…

Houston Rockets: …(for the 1994–95 season) forward Clyde Drexler (yet another former University of Houston star).

grey goo: …was coined by American engineer Eric Drexler in his book Engines of Creation (1986). Molecular electronics—a subfield of nanotechnology where individual molecules can become circuit elements—would make it possible to manipulate matter at the molecular and atomic level, and this, combined with advances in the physical sciences and gene technology,…

Carl Theodor Dreyer was a motion-picture director whose most famous films were explorations of religious experience, executed in the Danish “static” style. Dreyer was a pianist, a clerk, a journalist, and a theatre critic before entering the cinema in 1913 as a writer of subtitles. He eventually

Johan Ludvig Emil Dreyer was a Danish astronomer who compiled the New General Catalogue of Nebulae and Clusters of Stars, published in 1888, and its supplements, published in 1895 and 1908. This work, together with the supplements, was republished in 1953; it still remains one of the standard

Dreyfus affair, political crisis, beginning in 1894 and continuing through 1906, in France during the Third Republic. The controversy centred on the question of the guilt or innocence of army captain Alfred Dreyfus, who had been convicted of treason for allegedly selling military secrets to the

History of film: Méliès and Porter: …such as L’Affaire Dreyfus (The Dreyfus Affair, 1899), his first, which followed the logic of linear temporality to establish causal sequences and tell simple stories. By 1902 he had produced the influential 30-scene narrative Le Voyage dans la Lune (A Trip to the Moon). Adapted from a novel by…

Alfred Dreyfus was a French army officer whose trial for treason began a 12-year controversy, known as the Dreyfus Affair, that deeply marked the political and social history of the French Third Republic. Dreyfus was the son of a wealthy Jewish textile manufacturer. In 1882 he entered the École

artificial intelligence, situated approach: …the writings of the philosopher Bert Dreyfus of the University of California at Berkeley. Beginning in the early 1960s, Dreyfus opposed the physical symbol system hypothesis, arguing that intelligent behaviour cannot be completely captured by symbolic descriptions. As an alternative, Dreyfus advocated a view of intelligence that stressed the need…

cellulose acetate: …two Swiss brothers, Henri and Camille Dreyfus, who during World War I built a factory in England for the production of cellulose diacetate to be used as a nonflammable dope for the coating of fabric airplane wings. After the war, faced with no further demand for acetate dope, the Dreyfus…

Anouk Aimée was a French motion-picture actress who starred in films in various languages with a number of noted directors, including Federico Fellini, Jacques Demy, Bernardo Bertolucci, Robert Altman, and Claude Lelouch. The daughter of an actor and actress, Aimée made her first film appearance at

cellulose acetate: …accomplished by two Swiss brothers, Henri and Camille Dreyfus, who during World War I built a factory in England for the production of cellulose diacetate to be used as a nonflammable dope for the coating of fabric airplane wings. After the war, faced with no further demand for acetate dope,…

Dreyfus affair: The Dreyfusards (those seeking exoneration of Captain Dreyfus) saw the issue as the principle of the freedom of the individual subordinated to that of national security. They wanted to republicanize the army and put it under parliamentary control.

Henry Dreyfuss was a U.S. industrial designer noted for the number and variety of his pioneering designs for modern products. At age 17 Dreyfuss was designing sets for stage presentations at a Broadway motion-picture theatre. In 1927 a store commissioned him to study its merchandise, assess its

Richard Dreyfuss is an American film actor known for his portrayals of ordinary men driven to emotional extremes. After spending his early childhood in Brooklyn and Queens, New York, Dreyfuss moved with his family to California, where he began acting in plays at the West Side Jewish Community

Richard Dreyfuss is an American film actor known for his portrayals of ordinary men driven to emotional extremes. After spending his early childhood in Brooklyn and Queens, New York, Dreyfuss moved with his family to California, where he began acting in plays at the West Side Jewish Community

Alexander Dreyschock was a Bohemian pianist and composer, often compared to Liszt for technical prowess. Dreyschock, who gave his public debut at the age of eight, went to Prague in 1833 to study with Václav Tomášek. In 1838 he began extensive tours throughout Europe. He became professor of piano

Dreyse rifle, rifle named for its inventor, Nikolaus von Dreyse. It had a long, sharp firing pin designed to pierce the charge of propelling powder and strike the detonating material (usually mercury fulminate) located at the base of the bullet. The Dreyse rifle, invented between 1827 and 1829, was

Nikolaus von Dreyse was a German firearms inventor and manufacturer. The son of a locksmith, Dreyse worked from 1809 to 1814 in the Parisian gun factory of Jean-Samuel Pauly, a Swiss who designed several experimental breech-loading military rifles. Returning to Sömmerda, he in 1824 founded a

Nikolaus von Dreyse was a German firearms inventor and manufacturer. The son of a locksmith, Dreyse worked from 1809 to 1814 in the Parisian gun factory of Jean-Samuel Pauly, a Swiss who designed several experimental breech-loading military rifles. Returning to Sömmerda, he in 1824 founded a

human nutrition: Dietary Reference Intakes: During the 1990s a paradigm shift took place as scientists from the United States and Canada joined forces in an ambitious multiyear project to reframe dietary standards for the two countries. In the revised approach, known as the Dietary Reference Intakes (DRIs),…

iron processing: Direct reduction (DR): …the spongelike product, known as direct-reduced iron, or DRI, and must be removed in a subsequent steelmaking process. Only high-grade ores and pellets made from superconcentrates (66 percent iron) are therefore really suitable for DR iron making.

basketball: Rules: Dribble Held ball

egg: Dried egg products: Dried or dehydrated eggs are less expensive to ship, more convenient to use, and easier to store than fresh whole eggs. Spray dryers are used to produce a high-quality egg product with foaming and emulsification properties similar to those of fresh eggs.…

fruit processing: Dehydration: Dehydration is among the oldest and most common forms of fruit preservation. In dehydration, moisture in the fruit is driven off, leaving a stable food that has a moisture content below that at which microorganisms can grow. There are three basic systems for dehydration:…

dairy product: Dry milk products: Milk and by-products of milk production are often dried to reduce weight, to aid in shipping, to extend shelf life, and to provide a more useful form as an ingredient for other foods. In addition to skim and whole milk, a variety…

prune, dried plum. See

surface coating: Catalysts and driers: Another key component of coatings used at low concentrations are the catalysts and driers that help to accelerate film-formation reactions. The earliest catalysts for curing were discovered by accident, when it was determined that the presence of lead oxide pigments such as red lead…

Hans Adolf Eduard Driesch was a German experimental embryologist and philosopher who was the last great spokesman for vitalism, the theory that life cannot be explained as physical or chemical phenomena. Driesch was the son of a well-to-do Hamburg gold merchant. For his early education, his father

Pierre Drieu La Rochelle was a French writer of novels, short stories, and political essays whose life and works illustrate the malaise common among European youth after World War I. Drieu, the brilliant son of a middle-class family, attended the École des Sciences Politiques with the intention of

mining: Horizontal openings: drifts: All horizontal or subhorizontal development openings made in a mine have the generic name of drift. These are simply tunnels made in the rock, with a size and shape depending on their use—for example, haulage, ventilation, or exploration. A drift running parallel to the…

iceberg: Iceberg distribution and drift trajectories: In the Antarctic, a freshly calved iceberg usually begins by moving westward in the Antarctic Coastal Current, with the coastline on its left. Since its trajectory is also turned to the left by the Coriolis force owing to Earth’s rotation, it may run…

geomagnetic field: The ring current: Azimuthal drift is produced by two effects: a decrease in the strength of the main field away from Earth and a curvature of magnetic field lines. The first effect is easy to understand by considering the dependence of the particles’ radius of gyration on the strength…

navigation: Correction for drift: …ground was known as the drift angle because it resulted from the drifting effect of the wind. Early aircraft were fitted with drift sights through which the aviator visually aligned a grid with the moving ground below and so determined the drift. The plotting of velocity vectors and their sums…

Baltic Sea: Hydrology: Drift ice forms at and north of the Åland Islands area and also in the inner reaches of the Gulf of Finland, reaching a depth of about 3 feet (1 metre). Navigation between Stockholm and Turku and Helsinki in Finland is possible, except in the…

net: …net used for fishing are drift nets, surrounding (encircling, or encompassing) nets, and trap nets. Drift nets—which include gill and trammel nets used at the surface and bottom-set nets used on the seabed—capture fish by entangling them. Gill and trammel nets are used principally to catch herring and salmon and…

North Dakota: Relief: …of the North, and the Drift Prairie, a rolling plain covered with glacial drift, lie in North Dakota’s portion of the Central Lowland. The western half of the state is part of the Great Plains region of the United States. The Missouri Escarpment separates the Drift Prairie from the Great…

electron tube: Klystrons: …enter a region called the drift, or bunching, space, in which the electrons that were speeded up overtake the slower-moving ones. This causes the electrons to bunch and results in the density modulation of the beam, with the electron bunches representing an RF current in the beam. The catcher is…