# Balmer series

> English word · Noun

## Definitions
1. The set of spectral lines of the hydrogen atom that correspond to transitions involving a principal quantum number n=2

## Etymology
For Johann Jakob Balmer, Swiss mathematician.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/balmer-series