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 of Confucius's most famous later followers emphasized radically different aspects of his teachings.

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 of Ammonius's students-Origen the Pagan, and Longinus-seem to have held philosophical positions which were closer to Middle Platonism than Neoplatonism, which perhaps suggests that Ammonius's doctrines were also closer to those of Middle Platonism than the Neoplatonism developed by Plotinus ( see the Enneads ), but Plotinus does not seem to have thought that he was departing in any significant way from that of his master.

Two Bacillus species are considered medically significant: B. anthracis, which causes anthrax, and B. cereus, which causes a foodborne illness similar to that of Staphylococcus.

Two significant recent works written for solo bass include, Mario Davidovsky's Synchronisms No. 11 for double bass and electronic sounds and Elliott Carter's Figment III, for solo double bass.

Two significant waterways not under VNF's control are the navigable sections of the River Somme and the Brittany Canals, which are both under local management.

Two significant constitutional reforms took place during the 20th century.

Two main problems cited were that significant portions of the samples come from prison populations and male prostitutes, and that people who volunteer to be interviewed about taboo subject are likely to suffer from the problem of self-selection.

Two of the most significant thinkers of the period were biologist Charles Darwin ( 1809 – 82 ), author of On the Origin of Species by Means of Natural Selection ( 1859 ), and political scientist Karl Marx ( 1818 – 83 ), author of Das Kapital ( 1867 ).

Two other significant modernist dramatists writing in the 1920s and 1930s were Bertolt Brecht and Federico García Lorca.

This conflict would come to be very significant in the aftermath of World War Two when Burma was granted its independence from Great Britain in 1948.

Two very significant events for Canada occurred during Pierre Trudeau's final term in office.

Two classifications of radix sorts are least significant digit ( LSD ) radix sorts and most significant digit ( MSD ) radix sorts.

It is significant that the most successful of the post-Trinity films featured Hill ( Man of the East, A Genius, Two Partners and a Dupe ), Spencer ( It Can Be Done Amigo ) and a pair of Hill / Spencer look-alikes in Carambola.

Two that have been significant in national life are the Cross Street Chapel in Manchester and Newington Green Unitarian Church in north London.

Two hurricanes, the first in August 1813, the second in October 1815, destroyed more than two-hundred buildings, significant salt stores, and sank many vessels.

Two of the most significant precursors of neorealism are Toni ( Renoir, 1935 ) and 1860 ( Blasetti, 1934 ).

Two of the most significant military parades on Red Square were the one in 1941, when the city was besieged by Germans and troops were leaving Red Square straight to the front lines, and the Victory Parade in 1945, when the banners of defeated Nazi armies were thrown at the foot of Lenin's Mausoleum.

Two significant differences are that when his mantle is placed on him, its hem is torn to form bands, with which his body is bound ( like Lazarus in the tomb ), and his klobuk is placed on his head backwards, so that the monastic veil covers his face ( to show that he had already died to the world, even before his physical death ).

Two significant early concerts featuring the Airplane were held in late 1965.

Two months after the showing in Chicago and Wilmington's review, the film was selected for preservation in the United States National Film Registry by the Library of Congress as being " culturally, historically, or aesthetically significant.

Two significant qualifications were included in the second proposed amendment, one requiring the consent of the Dáil for enhanced cooperation under the treaty, and another preventing Ireland from joining any EU common defence policy.

Two of the most significant documentaries, both made by NHNZ, are Kakapo-Night Parrot ( 1982 ) and To Save the Kakapo ( 1997 ).

Two significant rivers, the Llano and the Colorado, flow through Llano County.

Two significant rivers, the Blanco River and the Pedernales River, flow through the county.