# data[].attributes.body
Democrotis was famous for discovering the concept of the atom. He experimented by breaking a seashell down into a fine powder to see how far he could break it down. Once he had it in a powder form he could not break it down anymore.

# data[].attributes.headline
John Dalton - (September 1766 - July 1844)

# data[].attributes.subject
John Dalton - (September 1766 - July 1844)

# data[].attributes.body
John Dalton created the atomic theory that all matter was made up of atoms. He proposed  that different materials had different sized and massed atoms. He also developed methods to calculate atomic weights and structures.

# data[].attributes.headline
Dmitri Mendeleev - (February 1834 - February 1907)

# data[].attributes.subject
Dmitri Mendeleev - (February 1834 - February 1907)

# data[].attributes.body
Dmitri Mendeleev made the symbols for all the chemical elements. He put them in order according to atomic weights, creating the periodic table.

# data[].attributes.headline
J.J Thompson - (December 1856 - August 1940)

# data[].attributes.subject
J.J Thompson - (December 1856 - August 1940)

# data[].attributes.body
J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. He discovered the electron, revolutionizing the understanding of the atom.

# data[].attributes.headline
Ernest Rutherford - (August 1871 – October 1937)

# data[].attributes.subject
Ernest Rutherford - (August 1871 – October 1937)

# data[].attributes.body
Ernest Rutherford's most famous experiment is the gold foil experiment. He aims alpha particles at a gold foil and found that some of the particles bounce back, meaning that an atom is empty space surrounding a nucleus

# data[].attributes.headline
Niels Bohr - (October 1885 - November 1962)

# data[].attributes.subject
Niels Bohr - (October 1885 - November 1962)

# data[].attributes.body
Niels Bohr was a Danish physicist who made big contributions to understanding atomic structure and quantum theory, for which he received a Nobel Prize in Physics. Founded the quantum theory.

# data[].attributes.headline
Erwin Schrodinger - (August 1887 - January 1961)

# data[].attributes.subject
Erwin Schrodinger - (August 1887 - January 1961)

# data[].attributes.body
Erwin Schrodinger formulated a wave equation that accurately calculated the energy levels of electrons in atoms.

# data[].attributes.headline
James Chadwick - (October 1891 - July 1974)

# data[].attributes.subject
James Chadwick - (October 1891 - July 1974)

# data[].attributes.body
James Chadwick played an enormous role in the atomic theory. James found that atoms had protons through his experiment. James bombarded beryllium atoms with alpha particles. This caused an unknown radiation to be formed, which showed him that atoms had protons.

# data[].attributes.headline
Werner Heisenberg - (December 1901 - February 1976)

# data[].attributes.subject
Werner Heisenberg - (December 1901 - February 1976)

# data[].attributes.body
Werner Heisenberg contributed to atomic theory by formulating quantum mechanics in terms of matrices and in discovering the uncertainty principle, which states that a particle's position and momentum cannot both be known exactly. Werner measured the position of an electron with a gamma ray microscope as his experiment.