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 accurate base maps are necessary for any planning program, the first step taken by the planning division to implement the long-range state plan has been to prepare two series of base maps -- one at a scale of 1 inch to a mile, and the second a series of 26 sheets at a scale of 1 inch to 2000 feet, covering the entire state.

Since the provision of skywave service requires adequate freedom from interference, only class 1, stations are capable of rendering skywave service.

Since Parts 1, and 2, were prepared independently, the abbreviation schemes and the chemical symbols used differ in the two parts.

Since we are considering here relatively small diameter ( 1 - 1.5 inches ) fiber plates, their average thickness can be kept below 1/4 inch and their internal losses may be assumed as 15 percent ( per plate ).

Since 1949, the St. Louis club has been below on May 1 just four times.

Since then the corporate headquarters have moved to New York City at 1 Park Avenue in Manhattan.

Since 1 April 1956, Aalen has the status of Große Kreisstadt (“ major district town ”).

This subextension is called a separable closure of K. Since a separable extension of a separable extension is again separable, there are no finite separable extensions of K < sup > sep </ sup >, of degree > 1.

Since the bigger 1 / 4 " tapioca pearls are separately sold as " black pearls " ( 黑珍珠 ) in markets, this name was the logical first choice and is more popular with the consumers of the drink.

Since B < sub > n </ sub >= 0 for all odd n > 1, and many formulas only involve even-index Bernoulli numbers, some authors write B < sub > n </ sub > instead of B < sub > 2n </ sub >.

Since 2003, a 1, 070 km pipeline has been used to export crude oil from the oilfields around Doba to offshore oil-loading facilities on Cameroon's Atlantic coast at Kribi.

Since the U. S .- Chile Free Trade Agreement went into effect on January 1, 2004, U. S .- Chilean trade has increased by 154 %.

Since these stock additions retain the short pistol barrel ( as short as 100 mm ( 4 inches )) they are highly restricted under the NFA unless the shoulder stocks are of original manufacture for the gun and the gun has been " delisted " as outlined in links 1 & 2 in the paragraph above, as is the case with so-equipped " Broomhandle " Mausers and Lugers.

Since then, she has donated over US $ 1 million to the program.

Since a comic book shop in his area traded 2 old comics for 1 new, he only had 2 Duck comics left from his sister's collection by the 70s, one of them being The Golden Helmet.

Since all probabilities p < sub > i </ sub > add up to one: p < sub > 1 </ sub > + p < sub > 2 </ sub > + ... + p < sub > k </ sub > = 1, the expected value can be viewed as the weighted average, with p < sub > i </ sub >’ s being the weights:

Since its unification with Pakistan, the East Pakistan Army had consisted of only one infantry brigade, which was made up of two battalions, the 1st East Bengal Regiment and the 1 / 14 or 3 / 8 Punjab Regiment in 1948.

Since the algorithm ensures that the remainders decrease steadily with every step, r < sub > k − 1 </ sub > is less than its predecessor r < sub > k − 2 </ sub >.

In the first step, the final nonzero remainder r < sub > N − 1 </ sub > is shown to divide both a and b. Since it is a common divisor, it must be less than or equal to the greatest common divisor g. In the second step, it is shown that any common divisor of a and b, including g, must divide r < sub > N − 1 </ sub >; therefore, g must be less than or equal to r < sub > N − 1 </ sub >.

Since r < sub > N − 1 </ sub > is a common divisor of a and b, r < sub > N − 1 </ sub > ≤ g.