spectroscopy
spectrometry
spectroscopic analysis
spectrum analysis
spectrographic analysis

I haven't done anything yet, except make some spectroscopic analyses.

Its low heavy element content was first recognized by spectroscopic analysis in 1963.

Spectroscopic analysis showed that they had created a seventh carbon form.

Around this time spectroscopic analysis also began to show that no water was present in the Martian atmosphere.

Visual spectroscopic analysis indicates a middle-aged star similar to Earth's sun.

Spectroscopic analysis of the clouds seemed to confirm their origin.

Prior to the advent of spectroscopic analysis, such methods were widely used.

The machine runs a continuous spectroscopic analysis and trips a signal when there's anything we might want.

But spectroscopic analysis of our drive emission would remove any doubts they might harbor.

Spectroscopic analysis, made from outer space, had indicated that the air here was breathable.