Democritus

• came up with the Atomic Theory

• found the neutron

• first to come up with the idea of the atom

• found the nucleus

Dalton

• Came up the Atomic Theory

• Found the nucleus

• Found the protons

• Found atoms contain subatomic particles

Eugene Goldstein

• Found the proton

• Found the neutron

• Found the electron

• Found the nucleus

Thomson

• Found the proton

• Found the neutron

• found the electron

• found the nucleus

Chadwick

• Found proton

• found neutron

• found nucleus

• came up with atomic atom

Rutherford

• Found the atom

• Found the nucleus

• Found the electron

• Found the neutron

Niels Bohr

• Found the electron

• Said electrons moved in waves

• said electrons sit in orbits

• Came up with the idea of orbitals

Schrodinger

• Developed the Atomic Theory

• Described electrons as moving in orbitals

• Describes electrons moving in orbits

• Came up with the Uncertainty Principle

Einstein

• came up with the Uncertainty Principle

• came up with the Atomic Theory

• came up with the Photoelectric Effect

• came up with the speed of light

Max Planck

• found the constant relating energy and frequency

• found the constant relating wavelength and energy

• found the relationship between the electron and proton

• Found the energy of a photon