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Optical Spectroscopy

Optical Spectroscopy - Optical Spectroscopy by Joseph...

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Optical Spectroscopy by Joseph Shapiro Lab Instructor: Robert Neuman October 25, 2007
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Results and Analysis In this experiment the wavelengths of various light sources were determined using handheld and computerized spectrometers. The first set of spectra observed was from fluorescent, incandescent, helium, and hydrogen light sources. These measurements were taken using a handheld spectrometer. (All wavelengths are measured in nanometers nm)     red yellow green  G-B violet blue Flourescent wavelength 620 585 550 490 450 375   intensity  6 5 8 5 7 6 Incandescent wavelenth 625-575 575-555 555-505 505-490 490-460 460-400 (continuous) intensity 6 2 7 5 5 5 Helium wavelength 650 588 500 495 460 440   intensity 5 9 6 6 7 7 Hydrogen wavelength 650 580   485 430     intensity 10 4   10 8   The same light sources were then measured using the computerized spectrometer. flourescent wavelength 405.922 437.29 488.35 547.88 589.16 611.3 711.34   intensity 131.926 1010.123 354.723 2526 621.22 3367.4 72.923 helium wavelength 390.69 449 472 493.8         intensity 1082 359 74.6 189,7       hydrogen wavelength 487.99 590.56 657.98 435         intensity 401.067 114.567 2008.38 24.967  
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