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Explore the various spectroscopy methods such as UV/VIS, IR, NMR, and ESR to analyze the absorption of electromagnetic radiation in different fields. Reference the significant impact of external magnetic fields in these studies.
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p+ p+ SPECTROSCOPY ABSORBANCE OF EM RADIATION H 3s1 UV/VIS DE = hnUV H 1s1 Microwaves IR infrared spectroscopy Radio waves Reference Ref1 DE = hnIR nuclear magnetic resonance NMR S ESR electron spin resonance S external magnetic. field external magnetic. field DE = hnmicro DE = hnradio N N