Planck

Planck is a german physicist. Seeking to explain the experimental spectrum (distribution of electromagnetic energy according to wavelength) of black body radiation, he introduced the hypothesis (1900) that oscillating atoms absorb and emit energy only in discrete bundles (called quanta) instead of continuously, as assumed in classical physics.

Vietnam

The people of Vietnam regained independence and broke away from China in AD 938 after their victory at the battle of Bạch Đằng River. Successive dynasties flourished along with geographic and political expansion deeper into Southeast Asia, until it was colonized by the French in the mid-19th century. Efforts to resist the French eventually led to their expulsion from the country in the mid-20th century, leaving a nation divided politically into two countries. Fighting between the two sides continued during the Vietnam War, ending with a Communist victory in 1975.
Emerging from this prolonged military engagement, the war-ravaged nation was politically isolated. The government’s centrally planned economic decisions hindered post-war reconstruction and its treatment of the losing side engendered more resentment than reconciliation.

Korea

Korea is a civilization, a formerly unified nation, and a geographic area currently composed of two sovereign states located on the Korean Peninsula in East Asia. It borders China to the northwest, and Russia to the northeast, and is separated from Japan to the east by the Korea Strait. Korea was divided in 1948, with the southern portion of the peninsula controlled by the capitalistic democracy South Korea, formally the Republic of Korea. In 1945, the Soviet Union and the United States agreed on the surrender and disarming of Japanese troops in Korea; the Soviet Union accepting the surrender of Japanese weaponry north of the 38th parallel and the United States taking the surrender south of it. This minor decision by allied armies soon became the basis for the division of Korea by the two superpowers, exacerbated by their inability to agree on the terms of Korean independence. The two Cold War rivals then established governments sympathetic to their own ideologies, leading to Korea's current division into two political entities: North Korea and South Korea.

Manhattan Project

The Manhattan Project was the project to develop the first nuclear weapon during World War II. Formally designated as the Manhattan Engineer District , it refers specifically to the period of the project from 1942-1946. The project's roots lay in scientists' fears since the 1930s that Nazi Germany was also investigating nuclear weapons of its own. Born out of a small research program in 1939, the Manhattan Project eventually employed more than 130,000 people and cost nearly $2 billion.

World War One

World War 1, also know as the First World War or the Great War, The War of the Nations and the War to End All Wars, was a world conflict lasting from 1914 to 1919, with the fighting lasting until 1918. The war was fought by the Allies on one side, and the Central Powers on the other. The war had become the second bloodiest conflict in recorded history. World War 1 became infamous for trench warfare, where troops were confined to trenches because of tight defenses.

History of Salsa

Salsa is not easily defined. Salsa is a distrillation of many Latin and Afro- Caribbean Dances. Each played a larg part in its evolution. Salsa is a similar to Mambo in that both have a pattern of six steps danced over eight counts of music.

History of Sunglasses

The first reason why they darkened glasses was because of smoke tinting, which was held in China before 1430. The Chinese judges had often worn sunglasses with quartz to hide the expression in their eyes while during a court case. They were first sold in the Atlantic City, New Jersey. When the year of 1930 struck was when everyone had to own a pair.