Where the classical picture finally breaks down. Light arrives in quanta, atoms keep only certain energies, nuclei decay on their own clock — and every spectrum is a fingerprint. The bench is a black field; whatever is live glows.
Six black-field benches — scan a spectrum, sweep a voltage, run a decay clock. One signature simulation per topic, each with a worked example and exam bank.
Enter the benches ↗Every derivation, worked example, exam bank and timed test as a full reader — with the live benches embedded inline, right where each idea appears.
Open the library ↗