Rutherford Model
Alpha scattering — toggle Thomson (pudding) vs Rutherford (point nucleus). Coulomb deflection.
Notes coming soon — open the simulation for the live walkthrough.
Class 12 · Notes
Atoms— Notes, Formulas & Revision
Complete revision notes and formulas for Atoms (Class 12). Curated for JEE, NEET, AP Physics, SAT, and CUET. Tap any topic to open the live simulation and full PYQ set.
Bohr Model
Circular orbits rₙ = n²a₀/Z with standing wave pattern nλ = 2πr.
Notes coming soon — open the simulation for the live walkthrough.
Energy Levels
Eₙ = −13.6 Z²/n² eV — horizontal levels with continuum above the ionization limit.
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Spectral Lines
Rydberg: 1/λ = R(1/n₁² − 1/n₂²) — selector for Lyman, Balmer, Paschen, Brackett, Pfund.
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Hydrogen Spectrum
All 5 series on a log-wavelength axis with visible-band zoom toggle.
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Transitions Between Levels
Click a level pair — photon animates out with wavelength-matched color.
Notes coming soon — open the simulation for the live walkthrough.
Atoms on sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs). Free physics revision for Class 12, JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT Subject Physics, and CUET-UG.