Helen Keller Helen Adams Keller was a deafblind United States author, activist and lecturer. Biography Childhood Keller was born at an estate called Ivy Green in Tuscumbia, Alabama, Alabama, on June 27, 1880, to parents Captain Arthur H.
	Helen Wills Moody Helen Wills, also known as Helen Wills Moody and as Helen Roark, was an American who dominated female tennis during the 1920s and 1930s. She was born Helen Newington Wills. She was already quite famous when she married Frederick Moody in December 1929 and began playing tennis as Helen Wills Moody.
	Helenium Helenium is a genus of about 40 herbaceous flowering plants in the daisy family Asteraceae, native to North America and Central America. They bear yellow or orange daisy-like flowers. Helenium species are used as food plants by the larvae of some Lepidoptera species including Phymatopus.
	Heliamphora The genus Heliamphora contains 16 species of pitcher_plant native to South America. The species are collectively known as sun pitchers, based on the mistaken notion that the heli of Heliamphora is from the Greek helios, meaning "sun". In fact, the name derives from helos, meaning marsh, and so they are correctly referred to as marsh pitcher plants.
	Helianthemum Helianthemum is a genus of about 110 species of evergreen or semi-evergreen subshrubs. They are widely distributed in the Americas, Europe, and from North Africa to Asia Minor and Central Asia, with the centre of diversity in the Mediterranean region.
	Helianthus The Helianthus Carolus Linnaeus genus comprises 67 species and several subspecies in the Asteraceae family, all of which are native to North America. However, at least the two species Helianthus annuus and Helianthus tuberosus are cultivated in Europe and other parts of the world today.
	Helicon Helicon is the name of a mountain in the region of Thespiai in Boeotia, Greece, made famous in Greek mythology because two springs sacred to the Muses were located here: the Aganippe and the Hippocrene. In the late 7th century BCE, the poet Hesiod sang how in his youth he had pastured his sheep on the slopes of Helicon, where Eros and the Muses already had sanctuaries and a dancing-ground near the summit, where "their pounding feet awaken desire".
	Hélicon #REDIRECT Helicon (musical instrument)
	Helicopter A helicopter is an aircraft which is Lift and propelled by one or more horizontal rotors, Helicopters are classified as rotary-wing aircraft to distinguish them from conventional fixed-wing aircraft. The word helicopter is derived from the Greek language words helix and pteron .
	Heliograph This article is about the signalling device. For other meanings, see heliograph. A heliograph uses a mirror to reflect sunlight to a distant observer. By moving the mirror flashes of light can be used to send Morse code. The heliograph was a simple but highly effective instrument for instantaneous optical communication over 50 miles or more in the 19th century.
	Heliopause In astronomy, the heliopause is the boundary where the Sun's solar wind is stopped by the interstellar medium. The solar wind blows a "bubble" known as the heliosphere in the interstellar medium . The outer border of this "bubble" is where the solar wind's strength is no longer great enough to push back the interstellar medium.
	Helios In Greek mythology the sun was personified as Hlios or Helius, as it is commonly spelt in English . Homer often calls him Titan and Hyperion . He was a son of the Titans Hyperion and Theia and brother of the goddesses Selene the moon and Eos the dawn.
	Heliosphere The heliosphere is a bubble in space produced by the solar wind. Although electrically neutral atoms from interstellar space can penetrate this bubble, virtually all of the material in the heliosphere emanates from the Sun itself.
	Heliothis Heliothis is a genus of moths, whose larvae are agricultural pests on the crop species tobacco, cotton and soybean.
	Heliport A heliport is a small airport suitable only for use by helicopters. Heliports typically contain one or more helipads and may have limited facilities such as fuel, lighting, a windsock, or even hangars. In larger towns and cities, customs facilities may be available at a heliport.
	Helium |- | 3He || 0.000137%* || colspan="4" | He is stable isotope with 1 neutron |- | colspan="6" align="center" | *Atmospheric value, abundance may differ elsewhere. Helium is a colorless, odorless, tasteless chemical element, one of the nearly inert noble gases of the periodic table of elements.
	Helix A helix, from the Greek language word ????a?/????, is a twisted shape like a spring, screw or a spiral staircase. Helices are important in biology, as DNA is helical and many proteins have helical substructures, known as alpha helix. Helices can be either right-handed or left-handed.
	Helix aspersa The brown garden snail is one of the most well-known terrestrial Mollusca. Its relationship with humans is multifaceted: it is an agricultural and garden pest, an edible delicacy, and occasionally a household pet. This snail species is native to Europe, but has been introduced to many regions around the world, from North America to Australia to southern Africa.
	Hell Hell, according to many religious beliefs, is a place or a state of pain and suffering. The English language word "hell" comes from the Germanic languages "Hel", which originally meant "to cover". "Hel" later referred to the goddess of the Norse underworld and daughter of Loki, Hel.
	Hellbender The Hellbender is a large aquatic salamander native to North America whose habitat includes large, swiftly flowing streams with rocky bottoms. Common names include the "snot otter" and "devil dog."
	Hellebore Helleborus is a genus of approximately 20 species of herbaceous perennial flowering plants in the family Ranunculaceae, within which it gave its name to the tribe of Helleboreae.
	Helleborus foetidus Helleborus foetidus, known variously as Stinking hellebore, Dungwort, or Bear's foot, is a member of the buttercup family Ranunculaceae, native to western Europe, from England south to Portugal, and east to Germany and Italy. It is a herbaceous perennial plant growing to 80 cm tall, with evergreen leaf.
	Hellion Hellion is a fictional character, a mutant in the Marvel Universe, a member of the student body at the X-Mansion, and a member of the Hellions squad therein. His real name is Julian Keller, and he first appeared in New Mutants #2.
	Helmet A helmet is a form of protective clothing worn on the head and usually made of metal or other hard substance, such as Kevlar, resin fiber, or plastic typically for protection of the head in combat, or in civilian life, from sports injuries, falling objects or high-speed collisions.
	Helmut Schmidt Helmut Heinrich Waldemar Schmidt is a Germany Social Democratic Party of Germany politician. He was the Chancellor of Germany of West Germany from 1974 to 1982, as well as Minister of Defense and Minister of Finance. He also served briefly as Minister of Economics and as Foreign Minister.
	Heloderma Heloderma is a genus of venom lizards native to the southwestern United States, Mexico and as far south as Guatemala. It consists of two separate species, with six subspecies. They prefer semi-arid habitats.
	Helodermatidae Helodermatidae is a taxonomic family which includes only a single genus, Heloderma, which includes the Beaded lizard and the Gila monster. ja:?????
	Helsinki Helsinki , Helsingfors is the capital and largest city of Finland. It is located in the southern part of Finland on the shore of the Gulf of Finland, at by the Baltic Sea. The population of the municipalities of Finland of Helsinki is 562,570 ntroduction
	Helvella crispa Helvella crispa, also known as the white saddle or the elfin saddle, is a fungus of the Helvellaceae family. They are mushrooms are identified by their irregularly-shaped caps, fluted stems, and fuzzy undersurfaces. They are found in North America and in Europe.
	Helvetica Helvetica is a widely-used sans-serif typeface developed in 1957 by Swiss graphic designer Max Miedinger.
	Hem To hem a piece of cloth, a garment worker folds up a cut edge, folds it up again, and then sews it down. The process of hemming thus completely encloses the cut edge in cloth, so that it cannot ravel. A hem is also the edge of cloth treated in this manner. The hem may be sewn down with a line of invisible hem-stitch or blind-stitch or sewn down by a sewing machine, usually leaving a visible line of sewing.
	Hemangioma A Hemangioma is a dense collection of blood vessels that is formed either during gestation or during the first few months of life and may appear as a birthmark. Hemangiomas occur in approximately ten percent of Caucasians, and are less prevalent in other races. Females are three to five times more likely to have hemangiomas than males.
	Hematite Hematite or haematite is the mineral form of Iron oxide, , one of several iron oxides. Hematite crystallizes in the rhombohedral system, and it has the same crystal structure as ilmenite and as corundum. Hematite and ilmenite form a complete solid solution at temperatures above 950C.
	Hematocrit The hematocrit and packed cell volume are measures of the proportion of blood volume that is occupied by red blood cells. It is normally between 0.42 and 0.52 for males and between 0.36 and 0.48 for women. The packed cell volume can be determined by centrifuge.
	Hematoma A hematoma, or haematoma, is a collection of blood, generally the result of hemorrhage, or, more specifically, internal bleeding. Hematomas exist as bruises, but can also develop in organ . Hematomas can gradually migrate, as the effused cell and pigment move in the connective tissue.
	Heme A heme or haem is a prosthetic group that consists of an iron atom contained in the center of a large heterocyclic organic ring called a porphyrin. Not all porphyrins contain iron, but a substantial fraction of porphyrin-containing metalloproteins have heme as their prosthetic subunit; these are known as hemoproteins.
	Hemerobiidae Hemerobiidae is a family of Neuropteran insects commonly known as brown lacewings. These insects differ from Chrysopidae not only by the usual colouring but by the wing venation, hemerobiids having numerous long veins lacking in chrysopids. Hemerobiids, like chrysopids, are predation, especially on aphids, both as larvae and adults.
	Hemerocallidaceae Hemerocallidaceae is the botanical name of a family of flowering plants. Such a family has been recognized by relatively few taxonomists and the wiktionary:circumscription of the family has varied. The APG II system, of 2003, does not recognize this family, not as such, but allows it to be segregated from the family Xanthorrhoeaceae, as an optional segregate.
	Hemiacetal A hemiacetal is a functional group or compound containing the function group in the form of: A hemiacetal can react with an alcohol under acidic conditions to form an acetal, and can dissociate to form an aldehyde and an alcohol.
	Hemimorphite Hemimorphite, is a Silicate minerals mineral which has been mined from days of old from the upper parts of zinc and lead ores, chiefly associated with smithsonite. It was often assumed to be the same mineral and both were classed under the same name of calamine.
	Hemiptera Hemiptera is a large, cosmopolitan order of insects, comprising some 67,500 known species in three suborders. Traditionally these taxa were treated as two separate orders, Homoptera and Heteroptera; the former name is now obsolete, and the latter name is falling into disuse, often replaced by Prosorrhyncha.
	Hemodialysis In medicine, hemodialysis, also haemodialysis, is a method for removing waste products such as potassium and urea, as well as free water from the blood when the kidneys are incapable of this. It is a form of renal dialysis and is therefore a renal replacement therapy.
	Hemoglobin Hemoglobin or haemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cell of the blood in mammals and other animals. Hemoglobin in vertebrates transports oxygen from the lungs to the rest of the body, such as to the muscles, where it releases the oxygen load.
	Hemoptysis Hemoptysis or haemoptysis is the expectoration of blood or of blood-stained sputum from the bronchi, larynx, trachea, or lungs. It is not the same as Hematemesis, which refers to vomiting up blood.
	Hemorrhoid Hemorrhoids are Varices or swelling and inflammation of veins in the rectum and anus.
	Hemosiderin Hemosiderin or haemosiderin is an abnormal microscopic pigment found in the human body. Hemosiderin is composed of iron oxide and can accumulate in different Organ in various diseases. Iron is required by many of the chemical reactions in the body but is toxic when not properly contained.
	Hemostat A hemostat, also called a hemostatic clamp is a surgery tool which resembles a set of scissors with a locking clamp replacing the blade. A set of hemostats comes in several different sizes and types, for example, Kelly, Crile, and Halstead; and any given surgery may require the use of a number of hemostats.
	Hemp This is one of several related articles about cannabis. Cannabis deals with the biology of the genus Cannabis. Cannabis is about marijuana, hashish and related drugs. Hemp is about cultivation and non-drug uses. See also Hemp. Hemp is a common name for Cannabis and the name most used when this annual plant is grown for non-drug purposes.
	Hen Harrier The Hen Harrier is a bird of prey of the harrier family. It breeds throughout the northern parts of the Northern hemisphere in Canada and the northernmost United States, and northern Eurasia. In North America it is known as the Northern Harrier or Marsh Hawk.
	Hen of the woods Hen of the woods, also known as sheeps Head and maitake, is an edible mushroom. It has a rippling form with no caps, and grows in clusters at the foot of oak trees, giving it an image of dancing butterfly, and thus the Japanese named it "maitake", literally meaning "dancing mushroom".
	Hen party A hen party is a party held for a woman who is about to be Marriage. The term "hen party" is more common in the UK and Ireland, while the term "bachelorette party" is more common in the United States. It may also be referred to as a "hen's night" in other English-speaking countries.
	Henbane Henbane is a plant of the family Solanaceae that originated in Eurasia, though it currently grows, at least to some extent, on all continents. It was historically used in combination with other plants, such as Mandrake , Deadly Nightshade, and Datura as an anaesthetic potion, as well as for its psychoactive properties in magic brews.
	Henchman The word henchman referred originally to one who attended on a horse, that is, a horse groom. Hence, like constable and marshal, also originally stable staff, henchman became the title of a official in a royal court or noble household.
	Hendrik Frensch Verwoerd Hendrik Frensch Verwoerd was Prime Minister of South Africa of South Africa from 1958 until his assassination in 1966. Unlike his predecessors, Verwoerd was not born in South Africa, but immigrated at age two with his parents from the Netherlands. A polarizing figure, he is often incorrectly considered to be the primary architect of apartheid, and was Prime Minister during the Sharpeville massacre, the banning of the African National Congress and Pan Africanist Congress, and the treason trial
	Hendrik Petrus Berlage Hendrik Petrus Berlage, Amsterdam, February 12 1856 — The Hague August 12 1934, was a prominent Netherlands architect.
	Henna Henna is a flowering plant, the sole species in the genus Lawsonia in the family Lythraceae. It is native to tropical and subtropical regions of Africa, South Asia and northern Australasia with an arid or at least seasonally dry climate. It is a shrub growing to 6 m tall.
	Henri Becquerel Antoine Henri Becquerel was a France physicist, Nobel laureate, and one of the discoverers of radioactivity.
	Henri Bergson ---- Henri-Louis Bergson was a major France Philosophy, influential in the first half of the 20th century.
	Henri Labrouste Henri Labrouste was a France architect from the famous Ecole des Beaux Arts school of architecture. After having stayed for six year in Rome, Labrouste opened an architectural training workshop, which quickly became the center of the Rationalist view. He was noted for his use of iron frame construction, and was one of the first to realize the importance of its use.
	Henri Matisse Henri Matisse was a France artist, noted for his use of color and his fluid, brilliant and original draftsmanship. As a draughtsman, printmaker, and Sculpture, but principally as a painter, Matisse is one of the best-known artists of the twentieth century.
	Henri Rousseau Henri Rousseau was a France Post-Impressionism painter in the Naive art or Primitive manner. He is also known as Le Douanier after his place of employment. Ridiculed during his life, he came to be recognized as a self-taught genius whose works are of high artistic quality.
	Henrik Ibsen Henrik Johan Ibsen was an influential Norway playwright who was largely responsible for the rise of the modern realism Nineteenth century theatre . It is said that Ibsen is the most frequently performed dramatist in the world after Shakespeare.
	Henry Cavendish Henry Cavendish was a British scientist.
	Henry Clay Henry Clay was a leading United States statesman and orator who served in both the United States House of Representatives and United States Senate. He was the founder and leader of the Whig Party and a leading advocate of programs for modernizing the economy .
	Henry Clay Frick Henry Clay Frick was an United States industrialist and art patron.
	Henry David Thoreau Henry David Thoreau was an United States author, development criticism, Natural history, Transcendentalism, pacifism, tax resistance and philosophy who is most famous for his written account, Walden, a reflection upon simple living amongst nature, and his essay, Civil Disobedience , an argument for individual civil disobedience as moral opposition
	Henry Fielding Henry Fielding was an England novelist and dramatist known for his rich earthy humor and satire prowess, and as the author of the novel The History of Tom Jones, a Foundling. Born near Glastonbury in Somerset in 1707, Fielding was educated at Eton College.
	Henry Fonda Henry Jaynes Fonda was a highly acclaimed Academy Awards-winning United States film actor, best known for his roles as plain-speaking idealists. Fonda's subtle, Naturalism acting style preceded by many years the popularization of method acting.
	Henry Ford Henry Ford was the founder of the Ford Motor Company and father of the modern assembly line used in mass production. His introduction of the Model T automobile revolutionized transportation and American industry. As sole owner of the Ford Company he became one of the richest and best-known people in the world.
	Henry Ford II Henry Ford II, commonly known as "Hank the Deuce," was the son of Edsel Ford and grandson of Henry Ford. He was president of Ford Motor Company from 1945 to 1960. The company became a publicly traded corporation under his leadership in 1956. Born in Detroit, Michigan, Henry Ford II was named president of Ford in 1945, Henry Ford II served in that capacity until November 9, 1960, when he resigned and became Chief Executive Officer of the company.