Spectrum Lab · emission spectra → sound

Emission lines, then ΔE = hf.

Every element glows in its own exact colors. Tap one to hear its chord: each line's light frequency, divided by 2⁴⁰ (forty octaves down), so every ratio between lines is kept exactly.

Tap a line to hear it alone.

Sound needs a tap first (your browser's rule). Loudness of each line is simplified; wavelengths are air values.

Where hydrogen's colors come from

In the Bohr model, E_n = −13.6 eV / n². When the electron falls to a lower level, it gives off one photon with exactly the energy difference: ΔE = hf = hc/λ. Tap a fall.

MCAT check

Three questions. Pick, then the red pen.

Also in the lab

Neuron LabA real Hodgkin–Huxley neuron: push it, numb it, block its K⁺ channels, and hear every action potential.

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