Physics307L:People/Gleicher/Balmer

The experiment performed is detailed on this page 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

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

Here is my excel sheet:

[[Media:balmer series.xls]]