The person who first theorized the Atom.

The emission of electrons or other free carriers when light hits a material.

Experiment that proved the existence of the nucleus of an atom.

States there is a very large—perhaps infinite[2]—number of universes, and everything that could possibly have happened in our past, but did not, has occurred in the past of some other universe or universes.

Occurs when an atom breaks into two smaller nuclei.

Atomic Model with tiny, negatively charged electrons embedded in a positively charged substrate

h = 6.626 x 10-34 J-s

The first atomic model that incorporates quantum theory and describes electrons in terms of set energy levels.

States that measurements can only be so accurate because if you know position really well, you lose information on that particle’s momentum

the process by which an unstable atomic nucleus loses energy by emitting an alpha particle, beta particle or a gamma ray.

An experiment created to detect the "luminiferous aether".

The minimum energy needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface.

The spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule transitioning from a high energy state to a lower energy state.

States that no two fermions (particles with spin ½) can occupy the same quantum state at the same time

The minimum energy that would be required to disassemble the nucleus of an atom into its component parts.

Theory that describes the propagation of light and matter at high speeds.

The unexpected result observed when X-rays are scattered on some materials that the scattered X-rays have different wavelengths from the wavelength of the incident X-rays.

-13.6 eV

An elementary particle of half-integer spin that does not undergo strong interactions.

1.66x10-27 kg

The scientific journal that Einstein published his Annus Mirabilis papers in.

λ = h/mv

A series of spectral emission lines of the hydrogen atom that result from electron transitions from higher levels down to the energy level.

Emergent phenomena that occur when a microscopically complicated system behaves as if it contained different weakly interacting particles in free space.

The process that occurs when a subatomic particle collides with its respective antiparticle to produce other particles