Physics307L:People/Cordova/Matt's Balmer Series Lab Summary
My partner for this lab was Sebastian
The notebook for this lab can be found here.
- Obtain the physical quantity known as the Rydberg constant through the measurement of spectral lines produced by hydrogen gas in an excited state.
- The tubes are made of glass, and they should be handled with care.
- Glass tubes can get hot after even minimal use. Use caution when handling immediately after use.
- Spectrometer - Adam Hilger; London, England; Serial: 12610
- Spectrum Tube Power Supply - Model: SP200 (5000V;10mA; Electro-Technic Products)
- Mercury Tube
- Hydrogen Tube
- Deuterium Tube
- Place spectrometer and lamp on a sturdy, flat surface.
- Elevate the lamp to the point where the thinner part of the glass tube (while placed in the lamp) is level with the eye sight of the spectrometer. We used a stack of books.
- Fiddle with spectrometer until you obtain desirable cross hair position and preferred slit width.
- Note: A thinner slit yields more accurate results, but sacrifices visibility.
ResultsSJK 13:56, 22 October 2010 (EDT)
With our data, the results came out to be
The accepted values for these constants are given in the Google doc, and are
Our result for is within 2 SEM. Our result for is within 11 SEM.