User:David J Weiss/Notebook/notes Balmer

Balmer Series

In this expernment we will find through expernmentation the value of the Rydberg Constant through the observation of spectral lines of the Hydrogen Atom and the Deuterium Atom. To do this we will excite the atoms of the Hydrogen and Deuterium by means of electric stimulation of the gas to excite the electrons in the gas to highter energy levels. When the electrons go back into the orignal energy levels they emit a photon whose wavelength is equal to the amount of energy of the electron.

Equipment

• Constant-Deviation Spectrometer
• Spectrum Tube Power Supply Model SP200 5000V
• Spectrum Tube, Mercury Vapor S-68755-30-K
• Spectrum Tube, Hydrogen S-68755-30-G
• Spectrum Tube, Deuteruim S-68755-30-E

Setup

The set up of this lab is as follows:

• Position the Constand-Deviation Spectrometer so you can have to view the Gas tubes
• Adjust the Height of the Spectrum Tube Power Supply so you can view the tubes through the eyepeace of the Spectrometer
• Place the tube into the Spectrum Tube Power Supply
• Plug the spectrum Tube Power Supply in and turn it on
• Adjust the prism so you can view the spectral lines of the Mercury Vapor

Safety

This lab has the following safety concerns:

• Electrical Shock: due to the fact that the gasses are excited through electrical means there is a safety concern that the equipment due to the fact that it runs on electricity will shock you
• Glass Tubes: glass may break and cut your skin and also make sure you do not inhale the gasses contained within the tubes
• Mercury Gas: toxic gas that can cause bodily harm if inhaled
• Care of the insterments
• Dont Drop things on your self

Referances

Phyc 307L page Balmer Notes

Dr Golds Lab Maunual

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