Labels:hakham | web site OCR: SPECTROSCOPY ATTER gives off "light of specific wavelengths (colors) when incandescent (glowing from heat) This light is called the em nission spectrum. When the same matter in ite normal state it will take in light exactly the same wavelengths. This light iS called the absorption spectrum. Using an instrument called spectrometer it possible to identify an un known material by matching its emission or absorption spectrum with that ofa known material