Home▸Physics & Mechanics▸Energy Ladder to Ionization: 2D Hydrogen Levels

⚡ Energy Ladder to Ionization: 2D Hydrogen Levels

Interactive 2D energy-level ladder of the hydrogen atom: set a photon's energy by dragging an arrow, watch resonant photons lift the electron up the Bohr levels, spontaneous emission cascade back down, and photons above 13.6 eV free the electron, with a live emission spectrum.

Physics & Mechanics2DEasy60 FPS📱 Mobile-adapted⇄ 3D version

Details

CategoryPhysics & Mechanics

RenderingCanvas 2D

DifficultyEasy

Target FPS60

ControlsDrag the arrow tip to set photon energy, click a level or orbit to move the electron; sliders for photon energy, rate, line width, lifetime and orbit speed; six presets (Lyman, Balmer, Paschen, ionization, broadband, cascade), fire, pause and step.

hydrogen atomBohr modelenergy levelsphoton absorptionionizationemission spectrum

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⚙ Under the hood

hydrogen atomBohr modelenergy levelsphoton absorptionionizationemission spectrum

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install