Articles related to "Atomic"

In 1932, James Chadwick proved that the atomic nucleus contained a neutral particle which had been proposed more than a decade earlier by Ernest Rutherford.

After having sat dormant for more than two thousand years, atomic theory was finally brought into the modern age with the work of John Dalton.

Historians cite several reasons that may have played a part in the dropping of the atomic bombs, but President Truman remained steadfast in his defense of using them.

New Zealander Ernest Rutherford made waves in the scientific community in the first couple decades of the twentieth century with his work on the atomic structure.

Atoms, of course, have existed since the beginning of time. Man's study of them, however, did not begin until considerably after that.

Despite Soviet acquisition of the atomic bomb in 1949, early Cold War crises were frequently diffused when the U.S. threatened to use the bomb in several Asian conflicts.

Most people are aware of the destructive force held within an atomic weapon, but what are physical forces are conspiring in order to cause such a violent explosion?

Tracing the process that transpired in the invention of the Atomic Bomb, the "Project Manhattan."

The first discovery of a subatomic particle would come in 1897, when J.J. Thompson first discovered evidence for the existence of the electron.

Atoms are an intermediary step between fundamental particles and the material objects that make up our large scale world. This is a brief primer on the atom.

Following up on the work of John Dalton, Robert Brown and, later, Albert Einstein, would finally help to convince the world of the existence of atoms.

Much of the difficulty scientists had in discovering, and then proving the existence of, atoms, is their size. Something so small had never before been defined.

In 1942, a "secret city" sprang up in a Tennessee valley, as Allied scientists raced to beat the Germans at developing enriched uranium to fuel the first atomic bomb.

Everyone has done it. Written a letter we wish we could take back. A letter written in anger or sorrow. Albert Einstein wrote a letter just like that in 1939.

Nuclear energy is an idea whose time has come again. Or has it? Veteran nuclear researcher James Mahaffey makes the case for an atomic solution to energy concerns.

Electrons in atoms are arranged in electronic energy levels, subshells and orbitals.

In order to understand many phenomena in the study of chemistry it is important to know how atoms are made up.

J. J. Thomson and Ernest Rutherford pioneered studies of atomic structure, but their early models of the structure of the atom had serious flaws.

Jean Perrin brilliantly confirmed Einstein's ideas on Brownian motion by the empirically calculating Avogadro's Constant, conclusively proving Dalton's atomic theory

The development, test, and use of the first atomic bomb by the United States during World War II.

Understanding the structure of the atom is a solid foundation for the study of chemistry. This article describes the components of the atom, and how they affect chemistry

Bohr's atomic model explains how electrons jumping between orbits in atoms cause emission and absorption line spectra and why each element has its own spectral signature.

The bombing of Hiroshima on the morning of August 6th, 1945 took science fiction from playful adolescence into a frightening, frightened adulthood.

The dropping of two atomic bombs on Japan by America in the waning days of World War II was a merciful act that saved millions of Japanese and American lives.

Early in the 20th century, it was accepted that matter was composed of atoms. But what exactly was an atom? Ernest Rutherford would have something to say about that.

The biological world can often seem like an arbitrary place, but at its heart it is governed by the laws of physics.

They are as small as one-Angstrom diameter hydrogen, or as large as the heavyweight uranium atom, which is 238 x heavier than hydrogen.They are the stuff of life - atoms

The Bohr model of the atom was a major leap forward in our understanding of atomic structure and quantum mechanics, but it was not the final answer.

CAT scans, or CTs, provide clear images of body parts, and undoubtedly have helped save lives. But they have also been accused of causing cancer.

The philosophy of Greek thinker Democritus known for his atomistic concepts, that all things are made of finite atoms in constant motion.

Electrons captured in an atom don't fly around in circles as they are often depicted, but rather exist in a particular area around the atom.

Mankind's greatest atomic power was harnessed through the invention of the nuclear reactor by two physicists, Enrico Fermi and Leo Szilard.

Brief biography of scientist Baron Ernest Rutherford whose work formed the basis of nuclear physics, best known for atom planetary model and atomic nucleus discovery.

Brief biography and philosophy of Niels Bohr, famous for the atomic structure model, the foundation of quantum mechanics.

Accidents at Three Mile Island and Chernobyl put a stop to the building of nuclear power stations, now there is a new enthusiasm for this energy source.

The atomic bombing is only part of the city's history, but a good place to start exploring Nagasaki, the first Japanese port opened to the West.

Atoms are the basic building blocks of matter. They form the molecules that are involved in the processes of living systems.

A diary kept reverently for fifty years by a surgeon's family opens a window on the reality of what happens when a city is condemned to death.

In Hiroshima, the Peace Memorial Park and Museum offers solemn remembrance of the atrocity that befell the city in 1945.

In order for physicists to understand the reasons for beta decay, a new nuclear force had to be developed - a task accomplished by Enrico Fermi in 1934.

In the final decades of the nineteenth and first few decades of the twentieth centuries, physicists would begin to unlock the mysteries of radioactivity.

A key tool for chemists throughout the world is the systematic arrangement of all known elements in the Periodic Table

Students unravel mysteries of the Periodic Table of Elements through a variety of representational activities.

Alpha particles are emitted from a radioactive substance by way of quantum tunneling and is governed by a statistical look at the strong nuclear force.

Hop on a bus at Tennessee's American Museum of Science and Energy and travel back to WW II, to the Cold War, and on to today's world-class sub-atomic research facilities.

The nucleus of an atom contains protons that are positively charged. Energy is needed to prevent them repelling each other and making the nucleus unstable.

In 1945, America dropped two atomic bombs on Japan killing as many as 220,000 people. But how did the US come to have such destructive weapons before anyone else?

In July of 1959, less than a year after the Cuban Revolution, Ernesto "Che" Guevara landed in Japan in his signature olive green military outfit. He was 31 years-old.

Brief biography of John Dalton, scientist and weather pioneer who established the modern concept of atoms known as Dalton's Atomic Theory.

This classic work details the triumphs and tribulations of the world's great atomic scientists during and after their work on the most terrible weapons ever created.