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# Lab2 - Reasina Suvaroporn MASC 110L Experiment 2 ATOMIC...

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Reasina Suvaroporn MASC 110L – 2/10/09 Experiment 2: ATOMIC SPECTROSCOPY Objective: To learn about the wavelengths and observe and calculate the light emitting properties of different atoms by using spectrometer Theory: The atoms are heated up to the point that the thermal energy promotes the electron up to an excited energy level and then measures the color/wavelength of light that is given off when the electron collapses back into the natural ground state. Moreover, when the electron absorbs the energy, it is promoted to the higher energy orbital. Nature wants the electron to go back to the ground state level (stability and entropy reasons) and give the energy back off at frequencies that are unique for that atom at that level of energy. These quantum photon energies can be calculated by using equation: ∆E = hν = hc λ Results: In class Q2d). The light incident on the diffraction slit is collimated because when it enters the slit, it becomes a collimated beam after passing through the objective lens in the collimator. The diffraction grating resolves this incident collimated beam into its component wavelengths.

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