During the late 19th and early 20th centuries, physicists discovered subatomic components and structure inside the atom, thereby demonstrating that the ' atom ' was divisible.

During his minority, Afonso V was placed under the regency of his mother in accordance with a will of his late father.

During the late 19th century, ideas about the legendary nature of Atlantis were combined with stories of other lost continents such as Mu and Lemuria.

During the late 1950s it was sought by two rail historians, George Horn and Martin Schachne, but they did not gain access to the tunnel itself.

During the Western Allied invasion of Germany in April 1945, the airfield was seized by the United States Third Army, and used by the USAAF 354th Fighter Group which flew P-47 Thunderbolts from the aerodrome ( designated ALG R-82 ) from late April until the German capitulation on 7 May 1945.

During their heyday from the late 1970s to the mid-1990s, most BBSes were run as a hobby free of charge by the system operator ( or " SysOp "), while other BBSes charged their users a subscription fee for access, or were operated by a business as a means of supporting their customers.

During the late 1980s and early 1990s, most BBSes used ANSI to make elaborate welcome screens, and colorized menus, and thus, ANSI support was a sought-after feature in terminal client programs.

During the late 1960s, the Baseball Players Union became much stronger and conflicts between owners and the players ' union led to major work stoppages in 1972, 1981, and 1994.

During the late 2nd century, the main ethnic change in the northern Black sea region was the immigration, from the Vistula valley in the North, of the Goths and accompanying Germanic tribes such as the Taifali and the Hasdingi, a branch of the Vandal people.

During the West Indies tour to Australia in late 2000, Lara was accompanied by Ward.

During the final year of communist Hungary in the late 1980s, the Hungarian government, along with his two sons, Béla III and Péter, requested that his remains be exhumed and transferred back to Budapest for burial, where Hungary arranged a state funeral for him on July 7, 1988.

During the late 1970s and early 1980s, the site hosted Creative Time's landmark Art on the Beach sculpture exhibitions.

During a rise of " retro " games in the late 1980s and early 1990s, Steve Jackson Games entered negotiations with Dennis Sustare and Scott Robinson, the current owners of the Bunnies & Burrows copyright, to publish an official GURPS supplement.

During this decade Mozart composed his most famous operas, his six late symphonies which helped to redefine the genre, and a string of piano concerti which still stand at the pinnacle of these forms.

During the late 1770s and the early 19th century, the Fulani, a pastoral Islamic people of the western Sahel, conquered most of what is now northern Cameroon, subjugating or displacing its largely non-Muslim inhabitants.

During the late 19th century European and American companies introduced railways to carry to the ports the local production of raw materials intended for exports and also imports from Europe.

During the late 19th and early 20th century mail was used as a material for bulletproof vests, most notably by the Wilkinson Sword Company.

During midday, as temperatures increase, they wallow in water and then graze in late afternoons and early evenings.

During the late Neolithic henge sites were constructed, single burials began to become more commonplace and by the Bronze Age it is possible that even where chambered cairns were still being built they had become the burial places of prominent individuals rather than of communities as a whole.

During the late 19th and early 20th centuries, just the opposite was the case with little to no population concentration in major industrial centres as the predominantly rural resource-dependent Maritime economy continued on the same path as it had since European settlement on the region's shores.

During his tenure as Cowboys coach, Tom Landry co-hosted his own coach's show with late veteran sportscaster Frank Glieber and later with Brad Sham.

During the late 1950s and early 1960s Brubeck canceled several concerts because the club owners or hall managers continued to resist the idea of an integrated band on their stages.

During the late 1920s and early 1930s Eisenhower's career in the post war army stalled somewhat, as military priorities diminished ; many of his friends resigned for high-paying business jobs.

During his recovery from a heart attack late in 1955, he huddled with his closest advisors to evaluate the GOP's potential candidates ; the group, in addition to his doctor, concluded a second term was well advised, and he announced in February 1956 he would run again.

During early childhood, children are more interested in the approval of their parents and teachers than they are in the approval of other children ; ;

During early childhood boys tease and bully, on the average, more than girls ; ;

* During late infancy and early childhood, febrile seizures are fairly common.

* During childhood, well-defined epilepsy syndromes are generally seen.

During his childhood and teen years, he developed a love of games and an appreciation for fantasy and science fiction literature.

During the first decade of the 2000s, Pei designed a variety of buildings, including the Suzhou Museum near his childhood home.

During his childhood, Langmuir's parents encouraged him to carefully observe nature and to keep a detailed record of his various observations.

During his childhood, Brown earned money shining shoes, sweeping out stores, selling and trading in old stamps, washing cars and dishes and singing in talent contests.

During his childhood, he emigrated with his family to South Africa, where he lived from age four to eight ( 1948 – 1952 ).

During his childhood, he went to Hirafuku to find his real mother.

During his childhood, Miyazaki was forced to switch schools several times.

During her early childhood, the Mitchell family lived in a two-story Victorian house on Jackson Hill, east of downtown Atlanta.

During childhood he spent years living with relatives in New York City due to problems at home.

During his childhood, Don Melchor worked as foreman of the sugar crops located in the municipality.

During Tipu's childhood, his father rose to take power in Mysore, and Tipu took over rule of the kingdom upon his father's death in 1782.

During his childhood, he and his father attended Mass regularly.

During his childhood and adolescence, members of the Norman aristocracy battled each other, both for control of the child duke and for their own ends.

During his childhood and adolescence, Shawn had lived in tough, blue-collar, urban towns like Rockland, Massachusetts and Brockton, Massachusetts before moving to the more quiet & small oceanside town of Harwich.

During his childhood aliens were the target of Viking raids and invasions under Sweyn Forkbeard and his son, Cnut.

During his childhood, Henry spent almost four and a half years as a hostage in Spain, an ordeal that marked him for life, leaving him introverted and gloomy.

During her childhood, Close lived with her parents in a stone cottage on her maternal grandfather's estate, in Greenwich.

During his childhood, he was fascinated by the wandering ascetics and monks.

During Gustav's childhood, parts of the Swedish nobility tried to make Sweden independent.

During his childhood he was trained as a handloom weaver.