Since the 1920s this discrepancy has been explained by the presence of isotopes ; the atomic mass of any isotope is very close to satisfying the whole number rule, with the mass defect caused by differing binding energies being significantly smaller.

Since the 1920s, Oxford has been the most popular candidate among " anti-Stratfordians ," a collective term for adherents of the various alternative-authorship theories.

Since the 1920s, Prime Ministers have typically been conferred the Grand Cordon of the Order of the Rising Sun, or the Grand Cordon of the Order of the Paulownia Flowers ( until 2003 a special higher class of the Order of the Rising Sun ), depending on tenure and eminence.

Since the production of high-quality semiconductor materials was still decades away, Lilienfeld's solid-state amplifier ideas would not have found practical use in the 1920s and 1930s, even if such a device were built.

Since the 1920s, it has experienced rapid growth and established many industries for agricultural products and machinery, textiles, pharmaceuticals, metal products, and services.

Since the 1920s, the two largest political parties have been the Conservative Party and the Labour Party.

Since the 1920s, X-ray diffraction has been the principal method for determining the arrangement of atoms in minerals and metals.

Since the end of the 20th century, the economic strength during the 1920s has drawn close comparison with the 1950s and 1990s, especially in the United States of America.

Since the 1920s, the appearance of the " modern girl " ( moga ) and " modern boy " ( mobo ) saw an increase in the number of women taking on the role of industrial and white-collar workers and consumers.

Since the 1920s, Lancaster had been the much larger and principal community of the Antelope Valley, as well as the rest of California's Mojave Desert.

Since the 1960s Leiston became famous outside the UK as the home of the Summerhill School, founded by A. S. Neill in the 1920s, which was the first major " free school "-referring to freedom in education.

Since the district's period of significance extends to 1944, most of those buildings erected after the 1920s were built as infill within the areas already subdivided by the 1920s.

Since the district's period of significance extends to 1944, most of those buildings erected after the 1920s were built as infill within the areas already subdivided by the 1920s.

Since the early 1920s, 150 movies and about a dozen television shows have been filmed here, including Tom Mix films, Hopalong Cassidy films, The Gene Autry Show, and The Lone Ranger.

Since the 1920s, the economy has been based primarily on agriculture.

Since the 1920s, an increasingly elaborate sub-culture of organized science fiction fandom has arisen, initially among correspondents to the letter columns of science fiction magazines.

Since the 1920s, Governors-General have acted solely on the advice of the local ministers, rather than on that of the British Government.

Since the 1920s the Wallabies have worn green and gold jerseys.

Since the late 1920s the tension between the air and naval services had declined.

Since the 1920s, the street's name has been synonymous with the American advertising industry.

Since the early 1920s, this modern vernacular form has been the standard style of writing for speakers of all varieties of Chinese throughout mainland China, Taiwan, Malaysia and Singapore as the written form of Modern Standard Chinese.

Since late 1920s, nearly all Chinese newspapers, books, and official and legal documents have been written in vernacular Chinese using the national standard.

Since the 1920s, 1.

Since the goal of our international planners is a World Government, this Atlantic Community would mark a giant step in that direction for, once American economic autonomy is absorbed, a larger grouping is a question of time.

Since most European cars average more miles per gallon of gasoline than American cars, it naturally follows that the cost per kilometer for these models will be less, but the greater seating capacity of the large American cars will equalize this, provided your group is sufficiently large to fill a 7-passenger limousine.

Since the mid 1950s, when urethane foam first made its appearance in the American market, growth has been little short of fantastic.

Since American life is committed above all to productivity and a higher standard of economic life, the countervailing forces of residential and religious exclusiveness have fought a desperate, rearguard action against the expanding interdependence of the metropolis.

Since the early 1990s, many American Chinese restaurants influenced by California cuisine have opened in San Francisco and the Bay Area.

Since then, American English has been influenced by the languages of West Africa, the Native American population, Spanish, and immigration.

Since the Bishop of London refused to ordain ministers in the British American colonies, this constituted an emergency, and as a result, on 2 September 1784, Rev.

Since its opening, Lajes Field has been used for refuelling American cargo planes bound for Europe, Africa, and the Middle East.

Since the turn of the millennium, notable successes among cult and midnight movies have been Donnie Darko ( 2001 ), the 2001 comedy Wet Hot American Summer, an absurdist parody of the pre-MTV summer camp genre, and the comic book adaptation Ghost World.

" Since then, Dartmouth has graduated over 700 Native American students from over 200 different tribes, more than the other seven Ivy League universities combined.

Since the American Civil War the term " discrimination " generally evolved in American English usage as an understanding of prejudicial treatment of an individual based solely on their race, later generalized as membership in a certain socially undesirable group or social category.

Since 2002, the new Afghan government has engaged in cordial relations with both Iran and the United States, even as relations between Iran and the United States have grown strained due to American objections to Iran's nuclear program.

Since 2006, the HBC has been led by an American and is now American owned.

Since 1979, the USA had required ICD-9-CM codes for Medicare and Medicaid claims, and most of the rest of the American medical industry followed suit.

Since the 1890s, Thomas Edison owned most of the major American patents relating to motion picture cameras.

Since the census of 2000, people who have, or believe they have, Native American ancestry may designate themselves, for census purposes, as being of more than one race.

Since the 1960s, the number of people claiming Native American ancestry has grown significantly and by the 2000 census, the number had more than doubled.

Since the inception of the American Football League, the Jets have maintained what is considered to be a marquee rivalry with the New England Patriots.

Since 2005 Apple Inc .' s Mac OS X operating system has come bundled with a dictionary application and widget which credits as its source " Oxford American Dictionaries ", and contains the full text of NOAD2.

Since 2006, the NBA has faced Euroleague teams in exhibition matches in the NBA Europe Live Tour and since 2009 in the Euroleague American Tour.

As Nancy Snow stated in her book, Information War: American Propaganda, Free Speech and Opinion Control Since 9-11, propaganda " begins where critical thinking ends.