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

These techniques include spectroscopic methods such as nuclear magnetic resonance (NMR) and X ray diffraction.

(c) Wide angle camera (WAC) of the optical, spectroscopic and infrared remote imaging system (OSIRIS).

Detection and discovery Transits Spectroscopic studies first revealed the presence of a planet around HD 209458 on November 5, 1999.

The presence of water ice is supported by infrared spectroscopic observations, which have revealed crystalline water ice on the surface of the moon.

The azimuthal quantum number is the second of a set of quantum numbers which describe the unique quantum state of an electron (the others being the principal quantum number, following spectroscopic notation, the magnetic quantum number, and the spin quantum number).