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Annie Jump Cannon
Annie Jump Cannon (; December 11, 1863 – April 13, 1941) was an American astronomer whose cataloging work was instrumental in the development of contemporary stellar classification. With Edward C. Pickering, she is credited with the creation of the Stellar classification, Harvard Classification Scheme, which was the first serious attempt to organize and classify stars based on their temperatures and spectral types. She was nearly deaf throughout her career after 1893, as a result of scarlet fever. She was a Suffragette, suffragist and a member of the National Woman's Party, National Women's Party. Personal life Cannon was born on December 11, 1863, in Dover, Delaware. She was the eldest of three daughters born to Wilson Cannon, a Delaware shipbuilder and state senator, and his second wife, Mary Jump. Cannon's mother was the first person to teach her the constellations and she encouraged her to follow her own interests, suggesting that she pursue studies in mathematics, chemistry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dover, Delaware
Dover ( ) is the List of capitals in the United States, capital and the List of municipalities in Delaware, second-most populous city of the U.S. state of Delaware. It is also the county seat of Kent County, Delaware, Kent County and the principal city of the Kent County, Delaware, Dover metropolitan statistical area, which encompasses all of Kent County and is part of the Philadelphia–Wilmington, Delaware, Wilmington–Camden, New Jersey, Camden, Pennsylvania, PA–New Jersey, NJ–DE–Maryland, MD, Delaware Valley, combined statistical area. It is located on the St. Jones River in the Delaware River coastal plain. It was named by William Penn for Dover in Kent, England (for which Kent County is named). As of 2020, its population was 39,403. Etymology The city is named after Dover, Kent, in England. First recorded in its Latinised form of ''Portus Dubris'', the name derives from the British language (Celtic), Brythonic word for waters (''dwfr'' in Middle Welsh). The same e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Household Economics
Household economics analyses all the decisions made by a household. These analyses are both at the microeconomic and macroeconomic level. This field analyses the structures of households, the behavior of family members, and their broader influence on society, including: household consumption, division of labour within the household, allocation of time to household production, marriage, divorce, fertility, investment in children, and resource allocation. Malthus and Adam Smith studied the economics of the family in part by looking at the relationship between family size and living wage. Similarly, J.S. Mill and Le Play analysed the impacts of different family structures on the standard of living of different family members through redistribution of family resources, insurance and self production. Since the beginning of the 20th century, most economists have focused on business and monetary dimensions of the economy without consideration of household behaviour. The study of consumpt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photographic Magnitude
Photographic magnitude ( or ) is a measure of the relative brightness of a star or other astronomical object as imaged on a photographic film emulsion with a camera attached to a telescope. An object's apparent photographic magnitude depends on its intrinsic luminosity, its distance and any extinction of light by interstellar matter existing along the line of sight to the observer. Photographic observations have now been superseded by electronic photometry such as CCD charge-coupled device cameras that convert the incoming light into an electric current by the photoelectric effect. Determination of magnitude is made using a photometer. Method Prior to photographic methods to determine magnitude, the brightness of celestial objects was determined by visual photometric methods. This was simply achieved with the human eye by compared the brightness of an astronomical object with other nearby objects of known or fixed magnitude: especially regarding stars, planets and other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Draper Catalogue
The ''Henry Draper Catalogue'' (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the ''Henry Draper Extension'' (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the ''Henry Draper Extension Charts'' (HDEC), published from 1937 to 1949 in the form of charts, which gave classifications for 86,933 more stars. In all, 359,083 stars were classified as of August 2017. The HD catalogue is named after Henry Draper, an amateur astronomer, and covers the entire sky almost completely down to an apparent photographic magnitude of about 9; the extensions added fainter stars in certain areas of the sky. The construction of the ''Henry Draper Catalogue'' was part of a pioneering effort to classify stellar spectra, and its catalogue numbers are commonly used as a way of identifying stars. History The origin of the ''Henry Draper Catalogue'' d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard Computers
The Harvard Computers were a team of women working as skilled workers to process astronomical data at the Harvard College Observatory in Cambridge, Massachusetts, United States. The team was directed by Edward Charles Pickering (1877 to 1919) and, following his death in 1919, by Annie Jump Cannon. Other computers on the team included Mary Anna Draper, Williamina Fleming, Anna Winlock, and Florence Cushman. Although these women started primarily as calculators, they made significant contributions to astronomy, much of which they published in research articles. History In the 19th century, the Harvard College Observatory faced the challenge of working through an overwhelming amount of astronomical data due to improvements in photographic technology. Harvard Observatory's director, Edward Charles Pickering, hired a group of women to analyze the astronomical data recorded on the growing Harvard Plate Stacks, collection of plate negatives. While Pickering was the director of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annie Jump Cannon & Henrietta Swan Leavitt, 1913
Annie may refer to: People and fictional characters * Annie (given name), a given name and a list of people and fictional characters with the name * Annie (Malayalam actress) (born 1975), Indian actress who works in Malayalam-language films * Annie (Telugu actress) (born 2001), Indian actress who works in Telugu-language films * Annie (singer) (born 1977), Norwegian singer Theatre and film * ''Annie'' (musical), a 1977 musical ** ''Annie'' (1982 film) *** ''Annie'' (1982 film soundtrack) *** '' Annie: A Royal Adventure!'', a 1995 telefilm sequel ** ''Annie'' (1999 film) *** ''Annie'' (1999 film soundtrack) ** ''Annie'' (2014 film) *** ''Annie'' (2014 film soundtrack) * ''Annie'' (1976 film), a British-Italian film Music * ''Annie'' (Anne Murray album) (1972) * "Annie" (song), a 1999 song by Our Lady Peace * "Annie", a song by SafetySuit * "Annie", a song by Pete Townshend from '' Rough Mix'' * "Annie", a 1972 song by Sutherland Brothers * "Annie", a 1995 song by E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard College
Harvard College is the undergraduate education, undergraduate college of Harvard University, a Private university, private Ivy League research university in Cambridge, Massachusetts, United States. Part of the Harvard Faculty of Arts and Sciences, Faculty of Arts and Sciences, Harvard College is Harvard University's traditional undergraduate program, offering BA (Bachelor of Arts) and BS (Bachelor of Science) degrees. It is highly selective, with fewer than four percent of applicants being offered admission as of 2022. Harvard College students participate in over 450 extracurricular organizations and nearly all live on campus. First-year students reside in or near Harvard Yard while upperclass students reside in other on-campus housing. History Harvard College was founded in 1636 by vote of the Massachusetts General Court, Great and General Court of the Massachusetts Bay Colony. Two years later, the college became home to North America's first known printing press, carri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spectroscopy
Spectroscopy is the field of study that measures and interprets electromagnetic spectra. In narrower contexts, spectroscopy is the precise study of color as generalized from visible light to all bands of the electromagnetic spectrum. Spectroscopy, primarily in the electromagnetic spectrum, is a fundamental exploratory tool in the fields of astronomy, chemistry, materials science, and physics, allowing the composition, physical structure and electronic structure of matter to be investigated at the atomic, molecular and macro scale, and over astronomical distances. Historically, spectroscopy originated as the study of the wavelength dependence of the absorption by gas phase matter of visible light dispersed by a prism. Current applications of spectroscopy include biomedical spectroscopy in the areas of tissue analysis and medical imaging. Matter waves and acoustic waves can also be considered forms of radiative energy, and recently gravitational waves have been associa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World's Columbian Exposition
The World's Columbian Exposition, also known as the Chicago World's Fair, was a world's fair held in Chicago from May 5 to October 31, 1893, to celebrate the 400th anniversary of Christopher Columbus's arrival in the New World in 1492. The centerpiece of the Fair, held in Jackson Park, was a large water pool representing the voyage that Columbus took to the New World. Chicago won the right to host the fair over several competing cities, including New York City, Washington, D.C., and St. Louis. The exposition was an influential social and cultural event and had a profound effect on American architecture, the arts, American industrial optimism, and Chicago's image. The layout of the Chicago Columbian Exposition was predominantly designed by John Wellborn Root, Daniel Burnham, Frederick Law Olmsted, and Charles B. Atwood. It was the prototype of what Burnham and his colleagues thought a city should be. It was designed to follow Beaux-Arts principles of design, namely ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blair Box Camera
Blair is a Scots-English-language name of Scottish Gaelic origin. The surname is derived from any of the numerous places in Scotland called ''Blair'', derived from the Scottish Gaelic ''blàr'', meaning "plain", "meadow" or "field", frequently a battlefield. The given name ''Blair'' is unisex and derived from the surname. Blair is generally a masculine name in Scotland and Canada, although it is more popular in the United States, where it is also a feminine name. A variant spelling of the given name is ''Blaire'' and ''Blare''.In 2016, in the United States, Blair was the 521st most popular name for girls born that year, and the 1807th most popular for boys. Scottish clan *Clan Blair People with the surname A–E *Adam Blair (born 1986), New Zealand rugby league player * Andrea Blair, New Zealand geothermal consultant * Andrew M. Blair (1818–???), American politician in Wisconsin *Andy Blair (footballer) (born 1959) Scottish footballer * Andy Blair (ice hockey) (1908–1977) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photography
Photography is the visual arts, art, application, and practice of creating images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. It is employed in many fields of science, manufacturing (e.g., photolithography), and business, as well as its more direct uses for art, film and video production, recreational purposes, hobby, and mass communication. A person who operates a camera to capture or take Photograph, photographs is called a photographer, while the captured image, also known as a photograph, is the result produced by the camera. Typically, a lens is used to focus (optics), focus the light reflected or emitted from objects into a real image on the light-sensitive surface inside a camera during a timed Exposure (photography), exposure. With an electronic image sensor, this produces an Charge-coupled device, electrical charge at each pixel, which is Image processing, electro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valedictorian
Valedictorian is an academic title for the class rank, highest-performing student of a graduation, graduating class of an academic institution in the United States. The valedictorian is generally determined by an academic institution's grade point average (GPA) system but other methods of selection may be factored in such as Volunteering, volunteer work, scholastic awards, research, and extra-curricular activity. Origin The term is an Anglicisation, Anglicised derivation (linguistics), derivation of the Latin ("to say farewell"), historically rooted in the valedictorian's traditional role as the final speaker at the graduation ceremony commencement before the students receive their diplomas. The valedictory address, also known as the valediction, is generally considered a final farewell to classmates, before they disperse to pursue their individual paths after graduating. Other terms The term is mostly used United States, Canada, and the Philippines, but other countries arou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
