It seems easy, looking back, to dismiss some of the fundamental building blocks of atomic theory as antiquated or primitive; after all, we all know electrons exist, further subdivided into quarks ...

THE theory of atomic structure has, during the past few years, reached a stage of sufficient success and stability for it to be possible to describe many of its features in a simple manner. There is a ...

Some atomic nuclei are not shaped like rugby balls, as a longstanding theory suggests, but are instead somewhat flattened, like almonds, according to a new study by Japanese scientists. A team from ...

The history of modern atomic theory begins with an unexpected person, a young school principal, and a member of the Quaker cult named John Dalton. In his article for the Manchester Literary and ...

__1803: __English chemist-physicist John Dalton starts using symbols to represent the atoms of different elements. Dalton, considered the father of modern atomic theory, made a logbook entry that day ...

Editor’s Note: Professor WERNER HEISENBERG, who was born in Duisburg in 1901, was awarded the Nobel Prize in Physics in 1932 for his work on the quantum theory. A member of the faculty of the ...

Each element has its own atomic number. Since atoms are neutral, we know then that sodium atoms must also have 11 negative electrons to cancel the charge from 11 positive protons. The first energy ...

Painting of Leucippus, the ancient Greek philosopher credited with a theory about creation, which some compare to modern Big Bang concepts. Credit: Luca Giordano, Wikimedia Commons, Public Domain ...