Two of the most well-known applications of the pure elements are rubidium and caesium atomic clocks, of which caesium atomic clocks are the most accurate representation of time known as of.

Two cellular phone providers cover most of the country.

Two of the most common polysaccharides are cellulose and glycogen, both consisting of repeating glucose monomers.

Two million years ago, the only sign of fire is burnt earth with human remains, which most other anthropologists consider to be mere coincidence rather than evidence of intentional fire.

Two thirds of the chemical elements occur on Earth only as compounds, and in the remaining third, often the compound forms of the element are most common.

Two of the most popular are Penny Arcade, focused primarily on video gaming, and User Friendly, which bases its humor on the Internet and other computer-user issues.

Two volcanoes form the island's most prominent topographic features: La Grille in the north, with an elevation of 1, 000 meters, is extinct and largely eroded ; Kartala in the south, rising to a height of 2, 361 meters, last erupted in 1977.

Two of the most notable differences are that the balls are always played in the same sequence ( blue, red, black, yellow ) throughout the game, and that a ball's " deadness " on other balls is carried over from turn to turn until the ball has been " cleared " by scoring its next hoop.

Two 2008 case studies show that the layout of a system provides a strong correlation to the ease of use for a system and that it proved more beneficial for the design to focus on presenting information in a way that reflected the most important goals and tasks of the user, rather than the structure of the organization.

Two of the most popular of the period were of Pomona ( goddess of orchards ) as a metaphor for Agriculture, and Diana, representing Commerce, which is a perpetual hunt for advantage and profits.

His most celebrated books include the bestselling Green Eggs and Ham, The Cat in the Hat, One Fish Two Fish Red Fish Blue Fish, Horton Hatches the Egg, Horton Hears a Who !, and How the Grinch Stole Christmas !.

Two of the most popular are " OIL RIG " ( Oxidation Is Loss, Reduction Is Gain ) and " LEO " the lion says " GER " ( Lose Electrons: Oxidization, Gain Electrons: Reduction ).

Two instruments, the Berlin questionnaire are the most validated.

Two of the most useful points for diving are the coast off Playa del Matorral in the South, and the zone between Lobos Island and Corralejo in the north.

Two of the most outspoken critics of the guild system were Jean-Jacques Rousseau and Adam Smith, and all over Europe a tendency to oppose government control over trades in favour of laissez-faire free market systems was growing rapidly and making its way into the political and legal system.

Two Pacific Ocean populations are known to exist: one of not more than 130 individuals ( according to the most recent population assessment in 2008 ) whose migratory route is presumed to be between the Sea of Okhotsk and southern Korea, and a larger one with a population between 20, 000 and 22, 000 individuals in the eastern Pacific travelling between the waters off Alaska and Baja California Sur.

Two bodies oversee the administration of the college, the Board of Corporators and the Board of Trustees ; while the Corporators are the official legal owners of the college, in practice most authority is delegated to the Trustees, who are elected by the Corporators.

Two years later, AFI released the list AFI's 100 Years ... 100 Passions honoring the most romantic films for the past 100 years, Harold and Maude ranked # 69.

Two of the most notable Mediterranean civilizations in classical antiquity were the Greek city states and the Phoenicians.

Two deacons go to priest-elect who, at that point, had been standing alone in the middle of the church, and bow him down to the west ( to the people ) and to the east ( to the clergy ), asking their consent by saying “ Command ye !” and then lead him through the holy doors of the altar where the archdeacon asks the bishop ’ s consent, saying, “ Command, most sacred master !” after which a priest escorts the candidate three times around the Holy Table, during which he kisses each corner of the Holy Table as well as the bishop's epigonation and right hand and prostrates himself before the holy table at each circuit.

The most common size has 34 strings: Two octaves below middle C and two and a half above ( ending on A ), although folk or lever harps can usually be found with anywhere from 19 to 40 strings.

Two of the most prominent composers of the Classical period ( music ), Joseph Haydn ( 1732 – 1809 ) and Wolfgang Amadeus Mozart ( 1756 – 1791 ), wrote harpsichord music.

Two of the most dramatic changes were in Iraq's relationships with the Soviet Union and with the United States.

Two famous medical examples are one promoting Yew juice as a cure for snakebite, and another promoting public flatulence for good health.

Two famous librarians, Hubert-Pascal Ameilhon and Joseph Van Praet, selected and identified over 300, 000 books and manuscripts that became the property of the people in the Bibliothèque Nationale.

Two famous Nevisian buildings from the 18th century are Hermitage Plantation, built of lignum vitae wood in 1740, the oldest surviving wooden house still in use in the Caribbean today, and the Bath Hotel, the first hotel in the Caribbean, a luxury hotel and spa built by John Huggins in 1778.

Two of their ancient oracles became especially famous during the pre-colonial period: the Agbala oracle at Awka and the Chukwu oracle at Arochukwu.

Two forefathers of project management are Henry Gantt, called the father of planning and control techniques, who is famous for his use of the Gantt chart as a project management tool ( alternatively Harmonogram first proposed by Karol Adamiecki ); and Henri Fayol for his creation of the five management functions that form the foundation of the body of knowledge associated with project and program management.

Two famous 7th century silver and enamel plaques from the hoard, one shown above, have a " Z-rod ", one of the Pictish symbols, in a particularly well-preserved and elegant form ; unfortunately few comparable pieces have survived.

Two of the most famous U. S. parodies were the series Mary Hartman, Mary Hartman ( 1976 – 77 ) and Soap ( 1977 – 81 ).

Two famous examples are the Boyer – Moore and Knuth – Morris – Pratt algorithms, and several algorithms based on the suffix tree data structure.

Two of the more famous incidents occurring during these riots were the August 23 and August 24 1929 Hebron massacre, in which 65 – 68 Jews were killed by Palestinians and the remaining Jews are forced to leave Hebron.

* January 30 – Two of the high-wire " Flying Wallendas " are killed, when their famous 7-person pyramid collapses during a performance in Detroit, Michigan.

The first and most famous mid-Victorian photomontage ( then called combination printing ) was " The Two Ways of Life " ( 1857 ) by Oscar Rejlander, followed shortly by the pictures of photographer Henry Peach Robinson such as " Fading Away " ( 1858 ).

Two famous transfers connected with the history of France are the expulsion of the Jews, 1308, and of the Huguenots who were declared illegal by the Edict of Fontainebleau, 1685.

Rickover found himself frequently and loudly in bureaucratic combat with these senior naval officers, to the point that he almost missed becoming " Admiral " Rickover: Two admiral-selection boards — exclusively made up of admirals — passed over Captain Rickover for promotion, even while he was in the process of becoming famous.

Two of China's most famous poets, Li Bai and Du Fu, belonged to this age, as did many famous painters such as Han Gan, Zhang Xuan, and Zhou Fang.

On August 21, 1860, during the famous " Battaglia di Piazza Duomo " ( Cathedral Square Battle ), Giuseppe Garibaldi conquered the Kingdom of the Two Sicilies.

Two famous undecidable figures, the Penrose triangle and the Blivet | devil's tuning fork.

Her subjects included several ultimately famous personages, and her subjects provided a description of what she observed in her Saturday salons at 27 Rue de Fleurus: " Ada " ( Alice B. Toklas ), " Two Women " ( The Cone Sisters, Claribel Cone and Etta Cone ), Miss Furr and Miss Skeene ( Ethel Mars and Maud Hunt Squire ), " Men " ( Hutchins Hapgood, Peter David Edstrom, Maurice Sterne ), " Matisse " ( 1909, Henri Matisse ), " Picasso " ( 1909, Pablo Picasso ), " Portrait of Mabel Dodge at the Villa Curonia " ( 1911, Mabel Dodge Luhan ), and " Guillaume Apollinaire " ( 1913 ).

Two of the most famous racing yachts, America and Atlantic, were rigged as schooners.

Two famous early stock market bubbles were the Mississippi Scheme in France and the South Sea bubble in England.

Two of Lawrence's most famous portraits of children were painted during the 1820s: that of Emily and Laura Calmady and that of Master Charles William Lambton, painted for his father Lord Durham for 600 guineas and known as The Red Boy.

Two years later the monastery received its famous Black Madonna icon of the Virgin Mary and in subsequent years became a centre of pilgrimage, contributing to the growth of the adjacent town.

Two of the most famous images of the station are the two Southern Railway posters " Waterloo Station-War " and " Waterloo Station-Peace ", painted by Helen McKie for the 1948 centenary of the station.

Two famous Gippsland explorers, Paul Strzelecki and Angus McMillan, passed through the immediate area around 1840.