Physics307L:People/Gleicher/Balmer
SJK 15:48, 15 October 2007 (CDT)
The experiment performed is detailed on this page [1] under Balmer Series.
The data I obtained is on this page Physics307L:People/Gleicher/Notebook/071001. There is error in the data due to backlash in the gears and subjectivity in the measurement.
Mercury
My Measurements
Violet: 436 nm, 435 nm, 434.6 nm
Green: 545 nm, 544.6 nm, 544 nm
Yellow: 577.1 nm, 576.1 nm, 570 nm
Using my data, I calculated the "true" value of the the lines of Mercury.
True Values
Violet - 435.2 nm +/- 0.1nm
Green - 544.5 nm +/- 0.048nm
Yellow - 574.4 nm +/- 2.842nm
Red - not visible
Next, I measured the wavelength of the lines for hydrogen and calculated the true value and my error.
Hydrogen Spectra
My Measurements
Red: 656.1 nm, 656.8 nm, 657 nm
blue: 485.6 nm, 487 nm, 486.1 nm
violet I: 433.6 nm, 431.8 nm, 434 nm
violet II: 409.9 nm, 411.2 nm, 410.5 nm
SJK 15:50, 15 October 2007 (CDT)
True Values
Red - 656.6 +/- 0.04298052 nm
Blue - 486.2333333 +/- 0.096866545 nm
Violet I - 433.1333333 +/- 0.264298123 nm
Violet II - 410.5333333 +/- 0.081470538 nm
Deuterium Spectra
My Measurements
Red: 655 nm, 656.1 nm, 657 nm
blue: 485 nm, 484.8 nm, 486 nm
violet I : 433.2 nm, 433.8 nm, 434.5 nm
violet II: 409.5 nm, 410.2 nm, 413 nm
True Values
Red - 656.0333333 +/- 0.19309159 nm
blue - 485.2666667 +/- 0.079546037 nm
violet I - 433.8333333 +/- 0.081470538 nm
violet II - 410.9 +/- 0.660103808 nm
Rydberg constant
Given Value: R = 1.0967758 × 107 m−1
My values for the Rydberg constant are as follows:
10972282.65 1/m SJK 15:53, 15 October 2007 (CDT)
Here is my excel sheet: