Patrick Smith Chemistry 115 Section 10 Atomic Spectra and Atomic Structure 16 April 2007 Lucas McElwayne Dear Mr. TA, In today’s experiment, our goal was to calibrate the spectroscope and then observe the emission spectrum of hydrogen. We first calibrated the spectroscope by using helium. After looking inside, we would find seven colors visible to the naked eye. The first of the colors was violet, with an observed wavelength (nm) of 450 nm and a known wavelength of 447 nm. Next in line was blue, which had an observed wavelength of 470 and a known of 471. Yellow had an observed wavelength of 580 nm, and a known wavelength of 588 nm. Next was red, which was observed to be near 660 nm, and absolutely known to be around 706 nm. Green had an observed wavelength of 500, and a known of 492. There was also a lighter shade of green which was seen to be a little higher than the standard shade; observed at 550, and known for 502. Lastly there was a darker shade of red which was seen to be observed at around 610, and known to be 668.
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This note was uploaded on 05/07/2008 for the course CHEM 105 taught by Professor Wescott during the Spring '08 term at Ole Miss.