What is the study of emission and absorption spectra in relation to element identification and relative motion

The study of emission and absorption spectra in relation to element identification and relative motion is called the Absorption spectroscopy. Absorption spectroscopy refers to the study that measures the radiation absorption, in relation to wavelength or frequency, by contact with the sample.

he believed that congress would be better not dealing with "lobbyists", or people who seek to influence (a politician or public official) on an issue, since historically, they had problems with these kinds of people. he thought lobbying produces benefits, but should be carefully monitored.

where is the diagram