7 Emission Spectrum of Hydrogen

Modern Physics

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: PHY251 - Hydrogen Spectrum PHY 251 Emission Spectrum of Hydrogen Introduction In this experiment you will measure the visible part of the hydrogen spectrum, the Balmer series, and determine the Rydberg constant R y . If parallel rays of light are incident perpendicularly to the plane of a diffraction grating, with uniform phase over the grating, then one will observe a diffraction pattern which will have a series of intensity maxima at angles satisfying the equation n = d sin , n = 0, 1, 2,... where is the wavelength of the emitted light, and d is spacing between adjacent grooves on the grating. Thus the grating will allow a determination of an unknown wavelength if the positions of the intensity maxima are measured and d is known. Apparatus The means for mounting the grating, obtaining parallel rays and measuring the positions of the maxima are provided by the spectrometer table, indicated in the Figure. Light from the source passes through a collimator which consists of a vertical slit and lens. With proper adjustment the collimator can be made collimator which consists of a vertical slit and lens....
View Full Document

This lab report was uploaded on 02/05/2008 for the course PHY 251 taught by Professor Rijssenbeek during the Fall '01 term at SUNY Stony Brook.

Page1 / 3

7 Emission Spectrum of Hydrogen - PHY251 - Hydrogen...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online