Disambiguation evidence for Kirchhoff's three laws of spectroscopy via surface form

"Kirchhoff's second law of spectroscopy"

As subject (4)

Triples where this entity appears as subject under the label "Kirchhoff's second law of spectroscopy".

Predicate	Object
appliesTo	excited atoms in a tenuous gas ⓘ
describes	emission line spectrum production ⓘ
instanceOf	physical law ⓘ
states	a hot, low-density gas produces a spectrum of bright emission lines ⓘ