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Reed
Reed or Reeds may refer to: Science, technology, biology, and medicine * Reed bird (other) * Reed pen, writing implement in use since ancient times * Reed (plant), one of several tall, grass-like wetland plants of the order Poales * Reed reaction, in chemistry * Reed receiver, an outdated form of multi-channel signal decoding * Reed relay, one or more reed switches controlled by an electromagnet * Reed switch, an electrical switch operated by an applied magnetic field * Reed valve, restricts the flow of fluids to a single direction * Reed (weaving), a comb like tool for beating the weft when weaving * Reed's law, describes the utility of large networks, particularly social networks * Reed–Solomon error correction, a systematic way of building codes that can be used to detect and correct multiple random symbol errors * Reed–Sternberg cell, related to Hodgkin's disease Organizations * Reed (company), offering employment-related services (UK) * Reed and Stem, fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed College
Reed College is a Private college, private Liberal arts colleges in the United States, liberal arts college in Portland, Oregon, United States. Founded in 1908, Reed is a residential college with a campus in the Eastmoreland, Portland, Oregon, Eastmoreland neighborhood, Tudor style architecture, Tudor-Gothic Revival architecture, Gothic style architecture, and a forested canyon nature preserve at its center. Reed List of Reed College people, alumni include 123 Fulbright Scholars, 73 Thomas J. Watson Fellowship, Watson Fellows, and three Churchill Scholarship, Churchill Scholars. Its 32 Rhodes Scholars are the second-most for a liberal arts college. Reed is ranked fourth in the United States for the percentage of its graduates who earn a PhD. History The Reed Institute (the legal name of the college) was founded in 1908 and held its first classes in 1911. Reed is named for Oregon pioneers Simeon Gannett Reed (1830–1895) and Amanda Reed (died 1904). Simeon was an entrepreneur in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed Switch
The reed switch is an Electromechanics, electromechanical switch operated by an applied magnetic field. It was invented in 1922 by professor Valentin Kovalenkov at the Peter the Great St. Petersburg Polytechnic University#Soviet era, Petrograd Electrotechnical University, and later evolved at Bell Labs, Bell Telephone Laboratories in 1936 by Walter B. Ellwood into the reed relay. In its simplest and most common form, it consists of a pair of Ferromagnetism, ferromagnetic flexible metal Electrical contacts, contacts in a hermetic seal, hermetically sealed glass envelope. The contacts are usually normally open, closing when a magnetic field is present, or they may be normally closed and open when a magnetic field is applied. The switch may be actuated by an electromagnetic coil, making a reed relay, or by bringing a permanent magnet near it. When the magnetic field is removed, the contacts in the reed switch return to their original position. The "reed" is the metal part inside t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed Relay
A reed relay is a type of relay that uses an electromagnet to control one or more reed switches. The contacts are of magnetic material and the electromagnet acts directly on them without requiring an armature to move them. Sealed in a long, narrow glass tube, the contacts are protected from corrosion. The glass envelope may contain multiple reed switches or multiple reed switches can be inserted into a single bobbin and actuate simultaneously. Reed switches have been manufactured since the 1930s. Compared with armature-based relays, reed relays can switch much faster, as the moving parts are small and lightweight, although switch bounce is still present. Also, they require less operating power and have lower contact capacitance. Their current handling capacity is limited but, with appropriate contact materials, they are suitable for "dry" switching applications. They are mechanically simple, making for reliability and long life. Memory device A few million reed relays were used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed Receiver
A reed receiver or tuned reed receiver (US) was a form of multi-channel signal decoder used for early radio control systems. It uses a simple electromechanical device or '' 'resonant reed' '' to demodulate the signal, in effect a receive-only modem. The encoding used is a simple form of frequency-shift keying. These decoders appeared in the 1950s and were used into the early 1970s. Early transistor systems were in use in parallel to them, but they were finally displaced by the appearance of affordable digital proportional systems, based on early integrated circuits. These had the advantage of proportional control. Operation The decoder of the reed receiver is based on the 'resonant reed' unit. This comprises a number of vibrating metal reeds, each one having a tuned vibration frequency like a tuning fork. These reeds are manufactured from a single tapered sheet of iron or steel, giving a comb of reeds of varying length. This resembles the comb used to sound musical notes in a m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed (weaving)
A reed is part of a weaving loom, and resembles a comb or a frame with many vertical slits. It is used to separate and space the warp threads, to guide the shuttle's motion across the loom, and to push the weft threads into place."Reed." ''The Oxford English Dictionary''. 2nd ed. 1989.1911 Encyclopædia Britannica In most floor looms with, the reed is securely held by the beater. Floor looms and mechanized looms both use a beater with a reed, whereas Inkle weaving and tablet weaving do not use reeds. History Modern reeds are made by placing flattened strips of wire (made of carbon or stainless steel) between two half round ribs of wood, and binding the whole together with tarred string. Historically, reeds were made of reed or split cane. The split cane was then bound between ribs of wood in the same manner as wire is now. In 1738, John Kay replaced split cane with flattened iron or brass wire, and the change was quickly adopted. To make a reed, wire is flattened to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed Business Information
RELX plc (pronounced "Rel-ex") is a British multinational information and analytics company headquartered in London, England. Its businesses provide scientific, technical and medical information and analytics; legal information and analytics; decision-making tools; and organise exhibitions. It operates in 40 countries and serves customers in over 180 nations. It was previously known as Reed Elsevier, and came into being in 1993 as a result of the merger of Reed International, a British trade book and magazine publisher, and Elsevier, a Netherlands-based scientific publisher. The company is publicly listed, with shares traded on the London Stock Exchange, Amsterdam Stock Exchange and New York Stock Exchange (ticker symbols: London: REL, Amsterdam: REN, New York: RELX). The company is one of the constituents of the FTSE 100 Index, AEX Index, Financial Times Global 500 and Euronext 100 Index. History The company, which was previously known as Reed Elsevier, came into being in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed (plant)
Reed is a common name for several tall, grass-like plants of wetlands. Varieties They are all members of the order Poales (in the modern, expanded circumscription), and include: In the grass family, Poaceae * Common reed ('' Phragmites australis''), the original species named reed * Giant reed ('' Arundo donax''), used for making reeds for musical instruments * Burma reed ('' Neyraudia reynaudiana'') * Reed canary-grass ('' Phalaris arundinacea'') * Reed sweet-grass ('' Glyceria maxima'') * Small-reed ('' Calamagrostis'' species) In the sedge family, Cyperaceae * Paper reed or papyrus (''Cyperus papyrus''), the source of the Ancient Egyptian writing material, also used for making boats In the family Typhaceae * Bur-reed ('' Sparganium'' species) * Reed-mace (''Typha'' species), also called bulrush or cattail In the family Restionaceae * Cape thatching reed ('' Elegia tectorum''), a restio originating from the South-western Cape, South Africa. * Thatching reed ('' Thamno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed Pen
A reed pen ( '; singular ') or bamboo pen () is a writing implement made by cutting and shaping a single Phragmites, reed straw or length of bamboo. History and manufacture Reed pens with regular features such as a split nib (pen), nib have been found in Ancient Egyptian sites dating from the 4th century BC. Reed pens were used for writing on papyrus, and were the most common writing implement in antiquity. In Mesopotamia and Sumer, reed pens were used by pressing the tips into clay tablets to create written records, using cuneiform. To make a reed pen, scribes would take an undamaged piece of reed about 20 cm long, and leave the end that would be cut into a point in water for some time. This ensured that the pen would not splinter when crafted. They made a series of cuts that would shape the nib of the pen until it was flat enough, and pointed. The pointed end was then cut off, not too far from the point, to form a squared end suitable for writing. At the end they would ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed (company)
Reed is an employment agency based in the United Kingdom. The company was founded in 1960 by Sir Alec Reed CBE. Reed's son, James Reed CBE, is the current chairman and chief executive officer (CEO). The company's website, reed.co.uk, established in 1995, was the UK's first employment website. In 2014, Alexa ranked reed.co.uk as the UK's largest employment agency website. Reed Specialist Recruitment is listed in ''The Sunday Times Fast Track 100'' league of Britain's largest private companies. Reed offers training, outsourcing and HR consultancy services. In 2024 Reed reported annual revenue of £1.3 billion. In 1985, 18% of the company was donated to the Reed Foundation, the Reed family's philanthropic arm. The Foundation created and continues to sponsor The Big Give, one of the UK's largest philanthropic endeavours. Reed Group companies Reed Group has 3500 employees across 350 business units and 180 locations worldwide, dealing in 30 recruitment specialisms. Its headquar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reeds Jewelers
Reeds Jewelers is a U.S. retail jewelry company founded in 1946 by Bill and Roberta Zimmer in Wilmington, North Carolina Wilmington is a port city in New Hanover County, North Carolina, United States. With a population of 115,451 as of the 2020 United States census, 2020 census, it is the List of municipalities in North Carolina, eighth-most populous city in the st .... Reeds Jewelers sells diamonds and precious gems, fine jewelry, brand-name watches, Pandora charms, Swarovski crystal, and jewelry accessories in its chain of retail stores primarily located in shopping malls and its online store Reeds.com. In May 2008, " National Jeweler" magazine listed Reeds Jewelers as the ninth largest North American Retail Jewelry chain."State of the Majors", National Jeweler, May 16, 2008, pp 9 and 44. History The company started in 1946 when Bill Zimmer and his wife, Roberta, bought a small downtown jewelry store in Wilmington, North Carolina and changed the name to Reeds Jewelers. Late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
