作业帮想要两篇英语文章（电话的发明和哈佛大学的）
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想要两篇英语文章（电话的发明和哈佛大学的）
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Telephone
The telephone (from the Greek: τῆλε, tēle, "far" and φωνή, phōnē, "voice"), often colloquially referred to as a phone, is a telecommunications device that transmits and receives sound, most commonly the human voice. Telephones are a point-to-point communication system whose most basic function is to allow two people separated by large distances to talk to each other. It is one of the most common appliances in the developed world, and has long been considered indispensable to businesses, households and governments. The word "telephone" has been adapted to many languages and is widely recognized around the world.
All telephones have a microphone to speak into, an earphone which reproduces the voice of the other person, a ringer which makes a sound to alert the owner when a call is coming in, and a keypad (or in older phones a telephone dial or no manual device) to enter the telephone number of the telephone being called. The microphone and earphone are usually built into a handset which is held up to the face to talk. The keypad may be part of the handset or of a base unit to which the handset would be connected. A landline telephone is connected by a pair of wires to the telephone network, while a mobile phone or cell phone is portable and communicates with the telephone network by radio. A cordless telephone has a portable handset which communicates by radio with a base station connected by wire to the telephone network, and can only be used within a limited range of the base station.
The microphone converts the sound waves to electrical signals, which are sent through the telephone network to the other phone, where they are converted back to sound waves by the earphone in the other phone's handset. Telephones are a duplex communications medium, meaning they allow the people on both ends to talk simultaneously. The telephone network, consisting of a worldwide net of telephone lines, fiberoptic cables, microwave transmission, cellular networks, communications satellites, and undersea telephone cables connected by switching centers, allows any telephone in the world to communicate with any other. Each telephone line has an identifying number called its telephone number. To initiate a telephone call, a conversation with another telephone, the user enters the other telephone's number into a numeric keypad on his/her phone. Graphic symbols used to designate telephone service or phone-related information in print, signage, and other media include ℡ (U+2121), ☎ (U+260E), ☏ (U+260F), and ✆ (U+2706).
Although originally designed for voice communication, the system has been adapted for data communication such as Telex, Fax and dial-up Internet communication.
Harvard
"Harvard" redirects here. For other uses, see Harvard (disambiguation).
Harvard University
Seal of Harvard University
Motto Veritas[1]
Motto in English Truth
Established September 8, 1636 (OS)
September 18, 1636 (NS)[2]
Type Private
Endowment US$27.4 billion[3]
President Drew Gilpin Faust
Academic staff 2,107[4]
Admin. staff 2,497 non-medical
10,674 medical
Students 21,225
Undergraduates 7,181 total
6,655 College
526 Extension
Postgraduates 14,044
Location Cambridge, Massachusetts, U.S.
Campus Urban
210 acres (85 ha) (Main campus)
22 acres (8.9 ha) (Medical campus)
359 acres (145 ha) (Allston campus)[5]
Newspaper The Harvard Crimson
Colors Crimson
Athletics 41 Varsity Teams
Ivy League
NCAA Division I
Nickname Harvard Crimson
Website harvard.edu
Harvard University logo
Harvard University is a private Ivy League university located in Cambridge, Massachusetts, United States, established in 1636 by the Massachusetts legislature. Harvard is the oldest institution of higher learning in the United States[6] and the first corporation (officially The President and Fellows of Harvard College) chartered in the country. Harvard's history, influence, and wealth have made it one of the most prestigious universities in the world.[7][8]
Harvard was named after its first benefactor, John Harvard. Although it was never formally affiliated with a church, the college primarily trained Congregationalist and Unitarian clergy. Harvard's curriculum and students became increasingly secular throughout the 18th century and by the 19th century had emerged as the central cultural establishment among Boston elites.[9][10] Following the American Civil War, President Charles W. Eliot's forty year tenure (1869–1909) transformed the college and affiliated professional schools into a centralized research university, and Harvard became a founding member of the Association of American Universities in 1900.[11] James Bryant Conant led the university through the Great Depression and World War II and began to reform the curriculum and liberalize admissions after the war. The undergraduate college became coeducational after its 1977 merger with Radcliffe College. Drew Gilpin Faust was elected the 28th president in 2007 and is the first woman to lead the university. Harvard has the largest financial endowment of any academic institution in the world, standing at $27.4 billion as of September 2010.[3]
The university comprises eleven separate academic units — ten faculties and the Radcliffe Institute for Advanced Study — with campuses throughout the Boston metropolitan area.[12] Harvard's 210-acre (85 ha) main campus is centered on Harvard Yard in Cambridge, approximately 3.4 miles (5.5 km) northwest of downtown Boston. The business school and athletics facilities, including Harvard Stadium, are located across the Charles River in Allston and the medical, dental, and public health schools are located in the Longwood Medical Area.[5]
As of 2010, Harvard employs about 2,100 faculty to teach and advise approximately 6,700 undergraduates (Harvard College) and 14,500 graduate and professional students.[13] Eight U.S. presidents have graduated from Harvard and 75 Nobel Laureates have been affiliated with the university as students, faculty, or staff. Harvard is also the alma mater of sixty-two living billionaires, the most in the country.[14] The Harvard University Library is the largest academic library in the United States, and the third largest library in the country.[15]
The Harvard Crimson competes in 41 intercollegiate sports in the NCAA Division I Ivy League. Harvard has an intense athletic rivalry with Yale University traditionally culminating in The Game, although the Harvard–Yale Regatta predates the football game.
Telephone
The telephone (from the Greek: τῆλε, tēle, "far" and φωνή, phōnē, "voice"), often colloquially referred to as a phone, is a telecommunications device that transmits and receives sound, most commonly the human voice. Telephones are a point-to-point communication system whose most basic function is to allow two people separated by large distances to talk to each other. It is one of the most common appliances in the developed world, and has long been considered indispensable to businesses, households and governments. The word "telephone" has been adapted to many languages and is widely recognized around the world.
All telephones have a microphone to speak into, an earphone which reproduces the voice of the other person, a ringer which makes a sound to alert the owner when a call is coming in, and a keypad (or in older phones a telephone dial or no manual device) to enter the telephone number of the telephone being called. The microphone and earphone are usually built into a handset which is held up to the face to talk. The keypad may be part of the handset or of a base unit to which the handset would be connected. A landline telephone is connected by a pair of wires to the telephone network, while a mobile phone or cell phone is portable and communicates with the telephone network by radio. A cordless telephone has a portable handset which communicates by radio with a base station connected by wire to the telephone network, and can only be used within a limited range of the base station.
The microphone converts the sound waves to electrical signals, which are sent through the telephone network to the other phone, where they are converted back to sound waves by the earphone in the other phone's handset. Telephones are a duplex communications medium, meaning they allow the people on both ends to talk simultaneously. The telephone network, consisting of a worldwide net of telephone lines, fiberoptic cables, microwave transmission, cellular networks, communications satellites, and undersea telephone cables connected by switching centers, allows any telephone in the world to communicate with any other. Each telephone line has an identifying number called its telephone number. To initiate a telephone call, a conversation with another telephone, the user enters the other telephone's number into a numeric keypad on his/her phone. Graphic symbols used to designate telephone service or phone-related information in print, signage, and other media include ℡ (U+2121), ☎ (U+260E), ☏ (U+260F), and ✆ (U+2706).
Although originally designed for voice communication, the system has been adapted for data communication such as Telex, Fax and dial-up Internet communication.
Harvard
"Harvard" redirects here. For other uses, see Harvard (disambiguation).
Harvard University
Seal of Harvard University
Motto Veritas[1]
Motto in English Truth
Established September 8, 1636 (OS)
September 18, 1636 (NS)[2]
Type Private
Endowment US$27.4 billion[3]
President Drew Gilpin Faust
Academic staff 2,107[4]
Admin. staff 2,497 non-medical
10,674 medical
Students 21,225
Undergraduates 7,181 total
6,655 College
526 Extension
Postgraduates 14,044
Location Cambridge, Massachusetts, U.S.
Campus Urban
210 acres (85 ha) (Main campus)
22 acres (8.9 ha) (Medical campus)
359 acres (145 ha) (Allston campus)[5]
Newspaper The Harvard Crimson
Colors Crimson
Athletics 41 Varsity Teams
Ivy League
NCAA Division I
Nickname Harvard Crimson
Website harvard.edu
Harvard University logo
Harvard University is a private Ivy League university located in Cambridge, Massachusetts, United States, established in 1636 by the Massachusetts legislature. Harvard is the oldest institution of higher learning in the United States[6] and the first corporation (officially The President and Fellows of Harvard College) chartered in the country. Harvard's history, influence, and wealth have made it one of the most prestigious universities in the world.[7][8]
Harvard was named after its first benefactor, John Harvard. Although it was never formally affiliated with a church, the college primarily trained Congregationalist and Unitarian clergy. Harvard's curriculum and students became increasingly secular throughout the 18th century and by the 19th century had emerged as the central cultural establishment among Boston elites.[9][10] Following the American Civil War, President Charles W. Eliot's forty year tenure (1869–1909) transformed the college and affiliated professional schools into a centralized research university, and Harvard became a founding member of the Association of American Universities in 1900.[11] James Bryant Conant led the university through the Great Depression and World War II and began to reform the curriculum and liberalize admissions after the war. The undergraduate college became coeducational after its 1977 merger with Radcliffe College. Drew Gilpin Faust was elected the 28th president in 2007 and is the first woman to lead the university. Harvard has the largest financial endowment of any academic institution in the world, standing at $27.4 billion as of September 2010.[3]
The university comprises eleven separate academic units — ten faculties and the Radcliffe Institute for Advanced Study — with campuses throughout the Boston metropolitan area.[12] Harvard's 210-acre (85 ha) main campus is centered on Harvard Yard in Cambridge, approximately 3.4 miles (5.5 km) northwest of downtown Boston. The business school and athletics facilities, including Harvard Stadium, are located across the Charles River in Allston and the medical, dental, and public health schools are located in the Longwood Medical Area.[5]
As of 2010, Harvard employs about 2,100 faculty to teach and advise approximately 6,700 undergraduates (Harvard College) and 14,500 graduate and professional students.[13] Eight U.S. presidents have graduated from Harvard and 75 Nobel Laureates have been affiliated with the university as students, faculty, or staff. Harvard is also the alma mater of sixty-two living billionaires, the most in the country.[14] The Harvard University Library is the largest academic library in the United States, and the third largest library in the country.[15]
The Harvard Crimson competes in 41 intercollegiate sports in the NCAA Division I Ivy League. Harvard has an intense athletic rivalry with Yale University traditionally culminating in The Game, although the Harvard–Yale Regatta predates the football game.