Experiment 3 – The Hydrogen Emission Spectrum

Experiment 3 – The Hydrogen Emission Spectrum - Trevor...

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Trevor Smith 1/22/09 #19730 S. Fier Experiment 3 – The Hydrogen Emission Spectrum Part 1 – Theoretical Determination of Balmer Series Wavelengths 1. Calculate the energies of the three transitions of the Balmer Series using Bohr’s equation , the frequencies of visible light emitted for these three transitions from their energies using Plancks’s equation , and the wavelengths of the visible light emitted for these three transitions from their frequencies . Part 2 – Experimental Determination of Balmer Series Wavelengths 2. In groups of 3 to 4, locate hydrogen spectrum tube, found in the spectrum tube holder. *Handle with extreme care. 3. Confirm variac is unplugged , switch in off position. Dial = 0. Adjust tube until tube stands vertically. Metallic tips of tube must be in contact with the metallic clips of the holder, not glass. Next, plug in holer to the variac. 4. Set up 1 meter stick on edge, fastened with clamp, on bench top in front of the tube and close to it as possible. Set up 2 nd
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