On This Date In History

On March 14, 1879, Albert Einstein is born, the son of a Jewish electrical engineer in Ulm, Germany. Einstein’s theories of special and general relativity drastically altered man’s view of the universe, and his work in particle and energy theory helped make possible quantum mechanics and, ultimately, the atomic bomb.

After a childhood in Germany and Italy, Einstein studied physics and mathematics at the Federal Polytechnic Academy in Zurich, Switzerland. He became a Swiss citizen and in 1905 was awarded a Ph.D. from the University of Zurich while working at the Swiss patent office in Bern. That year, which historians of Einstein’s career call the annus mirabilis, the “miracle year”, he published five theoretical papers that were to have a profound effect on the development of modern physics.
In the first of these, titled “On a Heuristic Viewpoint Concerning the Production and Transformation of Light,” Einstein theorized that light is made up of individual quanta (photons) that demonstrate particle-like properties while collectively behaving like a wave. The hypothesis, an important step in the development of quantum theory, was arrived at through Einstein’s examination of the photoelectric effect, a phenomenon in which some solids emit electrically charged particles when struck by light. This work would later earn him the 1921 Nobel Prize in Physics.
In the second paper, he devised a new method of counting and determining the size of the atoms and molecules in a given space, and in the third he offered a mathematical explanation for the constant erratic movement of particles suspended in a fluid, known as Brownian motion. These two papers provided indisputable evidence of the existence of atoms, which at the time was still disputed by a few scientists.
Einstein’s fourth groundbreaking scientific work of 1905 addressed what he termed his special theory of relativity. In special relativity, time and space are not absolute, but relative to the motion of the observer. Thus, two observers traveling at great speeds in regard to each other would not necessarily observe simultaneous events in time at the same moment, nor necessarily agree in their measurements of space. In Einstein’s theory, the speed of light, which is the limiting speed of any body having mass, is constant in all frames of reference. In the fifth paper that year, an exploration of the mathematics of special relativity, Einstein announced that mass and energy were equivalent and could be calculated with an equation, E=mc2.
Although the public was not quick to embrace his revolutionary science, Einstein was welcomed into the circle of Europe’s most eminent physicists and given professorships in Zurich, Prague and Berlin. In 1916, he published “The Foundation of the General Theory of Relativity,” which proposed that gravity, as well as motion, can affect the intervals of time and of space. According to Einstein, gravitation is not a force, as Isaac Newton had argued, but a curved field in the space-time continuum, created by the presence of mass. An object of very large gravitational mass, such as the sun, would therefore appear to warp space and time around it, which could be demonstrated by observing starlight as it skirted the sun on its way to earth. In 1919, astronomers studying a solar eclipse verified predictions Einstein made in the general theory of relativity, and he became an overnight celebrity. Later, other predictions of general relativity, such as a shift in the orbit of the planet Mercury and the probable existence of black holes, were confirmed by scientists.
During the next decade, Einstein made continued contributions to quantum theory and began work on a unified field theory, which he hoped would encompass quantum mechanics and his own relativity theory as a grand explanation of the workings of the universe. As a world-renowned public figure, he became increasingly political, taking up the cause of Zionism and speaking out against militarism and rearmament. In his native Germany, this made him an unpopular figure, and after Nazi leader Adolf Hitler became chancellor of Germany in 1933 Einstein renounced his German citizenship and left the country.
He later settled in the United States, where he accepted a post at the Institute for Advanced Study in Princeton, New Jersey. He would remain there for the rest of his life, working on his unified field theory and relaxing by sailing on a local lake or playing his violin. He became an American citizen in 1940.
In 1939, despite his lifelong pacifist beliefs, he agreed to write to President Franklin D. Roosevelt on behalf of a group of scientists who were concerned with American inaction in the field of atomic-weapons research. Like the other scientists, he feared sole German possession of such a weapon. He played no role, however, in the subsequent Manhattan Project and later deplored the use of atomic bombs against Japan. After the war, he called for the establishment of a world government that would control nuclear technology and prevent future armed conflict.
In 1950, he published his unified field theory, which was quietly criticized as a failure. A unified explanation of gravitation, subatomic phenomena, and electromagnetism remains elusive today. Albert Einstein, one of the most creative minds in human history, died in Princeton in 1955.

 On This Date In History

On December 2, 1942, Enrico Fermi, the Italian-born Nobel Prize-winning physicist, directs and controls the first nuclear chain reaction in his laboratory beneath the bleachers of Stagg Field at the University of Chicago, ushering in the nuclear age. Upon successful completion of the experiment, a coded message was transmitted to President Roosevelt: “The Italian navigator has landed in the new world.”
Following on England’s Sir James Chadwick’s discovery of the neutron and the Curies’ production of artificial radioactivity, Fermi, a full-time professor of physics at the University of Florence, focused his work on producing radioactivity by manipulating the speed of neutrons derived from radioactive beryllium. Further similar experimentation with other elements, including uranium 92, produced new radioactive substances; Fermi’s colleagues believed he had created a new “transuranic” element with an atomic number of 93, the result of uranium 92 capturing a neuron while under bombardment, thus increasing its atomic weight. Fermi remained skeptical about his discovery, despite the enthusiasm of his fellow physicists. He became a believer in 1938, when he was awarded the Nobel Prize in physics for “his identification of new radioactive elements.” Although travel was restricted for men whose work was deemed vital to national security, Fermi was given permission to leave Italy and go to Sweden to receive his prize. He and his wife, Laura, who was Jewish, never returned; both feared and despised Mussolini’s fascist regime.
Fermi immigrated to New York City, Columbia University, specifically, where he recreated many of his experiments with Niels Bohr, the Danish-born physicist, who suggested the possibility of a nuclear chain reaction. Fermi and others saw the possible military applications of such an explosive power, and quickly composed a letter warning President Roosevelt of the perils of a German atomic bomb. The letter was signed and delivered to the president by Albert Einstein on October 11, 1939. The Manhattan Project, the American program to create its own atomic bomb, was the result.
It fell to Fermi to produce the first nuclear chain reaction, without which such a bomb was impossible. He created a jury-rigged laboratory with the necessary equipment, which he called an “atomic pile,” in a squash court in the basement of Stagg Field at the University of Chicago. With colleagues and other physicists looking on, Fermi produced the first self-sustaining nuclear chain reaction and the “new world” of nuclear power was born.

 

 

Stagg Field Reactor. Chicago Pile-1, the first nuclear reactor to achieve a self-sustaining chain reaction.

 

On December 2, 1823, during his annual address to Congress, President James Monroe proclaims a new U.S. foreign policy initiative that becomes known as the “Monroe Doctrine.” Primarily the work of Secretary of State John Quincy Adams, the Monroe Doctrine forbade European interference in the American hemisphere but also asserted U.S. neutrality in regard to future European conflicts.
The origins of the Monroe Doctrine stem from attempts by several European powers to reassert their influence in the Americas in the early 1820s. In North America, Russia had attempted to expand its influence in the Alaska territory, and in Central and South America the U.S. government feared a Spanish colonial resurgence. Britain too was actively seeking a major role in the political and economic future of the Americas, and Adams feared a subservient role for the United States in an Anglo-American alliance.
The United States invoked the Monroe Doctrine to defend its increasingly imperialistic role in the Americas in the mid-19th century, but it was not until the Spanish-American War in 1898 that the United States declared war against a European power over its interference in the American hemisphere. The isolationist position of the Monroe Doctrine was also a cornerstone of U.S. foreign policy in the 19th century, and it took the two world wars of the 20th century to draw a hesitant America into its new role as a major global power.

 

 

 

 

 

 On This Date In History

On October 11, 1939, a crucial letter was delivered to President Franklin D. Roosevelt that led to the beginnings of the Manhattan Project, which would eventually produce the first atomic bombs during World War II.
In August 1939, Albert Einstein signed the letter, authored by physicist Leo Szilard, that urged Roosevelt to fund research into the possibility of using nuclear fission as a weapon.
Einstein and Szilard believed Nazi Germany was conducting similar research.
In order to alert Roosevelt to the possibility of an atomic bomb, economist Alexander Sachs met with Roosevelt to hand-deliver the letter to him on Oct. 11.
This meeting led to Roosevelt forming a committee that consisted of civilian and military representatives to study uranium. Based on the committee’s findings, the U.S. government started funding research that focused on radioactive isotope separation and nuclear chain reactions.

 

 Physicist Leo Szilard

 Albert Einstein

 

 

 

On October 11, 1968, Apollo 7, the first manned Apollo mission, is launched with astronauts Walter M. Schirra, Jr.; Donn F. Eisele; and Walter Cunningham aboard. Under the command of Schirra, the crew of Apollo 7 conducted an 11-day orbit of Earth, during which the crew transmitted the first live television broadcasts from orbit.

 

 

 

 

On October 11, 1954, the Viet Minh formally take over Hanoi and control of North Vietnam.
The Vietnam Doc Lap Dong Minh (Vietnam Independence League), or Viet Minh as it would become known to the world, was a Communist front organization founded by Ho Chi Minh in 1941 to organize resistance against French colonial rule and occupying Japanese forces.
With the end of the Japanese occupation in 1945, the French attempted to reimpose colonial rule. The Viet Minh launched a long and bloody guerrilla war against French colonial forces in what came to be known as the First Indochina War. Ultimately, the Viet Minh, under the leadership of General Vo Nguyen Giap, decisively defeated the French at the Battle of Dien Bien Phu in May 1954. On August 1, the armistice ending the war went into effect. The triumphant Viet Minh marched into Hanoi as the French prepared to withdraw their forces.
Under the provisions of the agreement signed at the Geneva Conference in July, Vietnam was to be temporarily split into approximately equal halves. The two halves were to be separated by a Demilitarized Zone (DMZ) running along the 17th parallel. The northern half was to be governed by the Democratic Republic of Vietnam, which had been proclaimed by Ho Chi Minh, and the southern half would be governed by the noncommunist State of Vietnam until 1956, at which time the two zones were to be reunified following internationally supervised elections. Ngo Dinh Diem, who had become premier of the State of Vietnam in June, was a Catholic and staunchly anticommunist. Diem disliked the Geneva Accords and set about to consolidate his power in the south. By the middle of 1955, Diem had effectively gained control of most of South Vietnam, and in July of that year, he declared his refusal to permit the elections called for at Geneva. This announcement led to a stepped-up insurgency in the south and ultimately to the Second Indochina War, when North Vietnamese regular units were committed in the south and U.S. forces arrived. Vietnam was not reunited until April 1975, when North Vietnamese troops captured Saigon.

 

 Ho Chi Minh

 

 

On October 11, 1915, Prime Minister Vasil Radoslavov of Bulgaria issues a statement announcing his country’s entrance into the First World War on the side of the Central Powers.
Secretly courted by both sides in World War I as a potential ally in the tumultuous Balkan region, Bulgaria eventually decided in favor of the Central Powers. In his statement of October 11, 1916, Radoslavov argued that confronting the Allied powers, Britain, France and Russia, alongside Germany, Austria-Hungary and the Ottoman Empire was desirable not only for economic reasons, as the latter two countries were Bulgaria’s chief partners in trade, but also as a way for the country to defend itself against the aggression of Serbia, the Russian ally and major power in the Balkans that Radoslavov considered to be his country’s “greatest foe.”
“Today we see races that are fighting, not indeed for ideals, but solely for their material interests,” Radoslavov maintained. “The more, therefore, we are bound to a country in a material way, the greater is that country’s interest in our maintenance and increase, since thereby that one will profit who helps us and is tied to us by economic bonds… The figures show that our trade, our interests, and our economic life are inseparably linked with Turkey, Germany, and Austria-Hungary…”
Bulgaria acted quickly after its declaration of war, invading the Serbian province of Macedonia and in the process driving a wedge in front of Allied forces in Greece in their attempts to aid the Serbian army. In the summer of 1916, Bulgaria invaded and occupied a section of then-neutral Greece, mounting a major offensive in August that was only halted by British aerial and naval attacks. A stalemate ensued until 1918, when the Allies began to put more pressure on the Germans on the Western Front, forcing them to transfer a number of troops from the Salonika front, as the battlegrounds of northern Greece and Macedonia were known, where they had been aiding their Bulgarian allies. Disintegrating morale and growing discontent among the Bulgarian troops and on the home front were compounded by a new Allied offensive, launched in mid-September. On September 24, the Bulgarian government authorized its army’s commander to seek an armistice. Bulgaria formally exited World War I on September 29, 1918, having lost some 90,000 soldiers over the course of the conflict.

 

 

 

 

 

 

“Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.” ― attributed to Albert Einstein