Blackbody Radiation
The Electromagnetic Radiation Emitted By An Ideal Object That Absorbs All Incident Electromagnetic Waves.

Plancks Constant
A Fundamental Constant In Quantum Mechanics Relating The Energy Of A Photon To Its Frequency.

Photoelectric Effect
A Phenomenon In Which Electrons Are Ejected From A Material When It Absorbs Photons, Supporting Wave Particle Duality.

Ionization Energy
The Amount Of Energy Required To Remove An Electron From An Atom, Related To Quantum Mechanics.

Excited State
A Higher Energy Level Occupied By An Electron After Absorbing Energy.

Ground State
The Lowest Energy Level Of An Electron In An Atom.

Energy Level
A Quantized State In Which An Electron Can Exist In An Atom, Related To Electron Orbitals.

Electron Orbital
A Region Around The Nucleus Where An Electron Is Likely To Be Found, Described In Quantum Mechanics.

Bohr Model
An Early Atomic Model In Which Electrons Orbit The Nucleus In Discrete Energy Levels.

Atomic Model
A Representation Of The Structure Of Atoms, Including Electrons, Protons, And Neutrons.