Chemistry

Introduction

In this experiment we are trying to examine and fine the interference of light waves and to observe how the interference pattern depends on the geometry of the apertures. Interference occurs because we combined two lights waves, one is coming from each slit. The definition of interference in physics is the combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or canceled. In this lab the light beam is assumed to be wide enough to illuminate both slits. The light which passes through two slits is viewed on a wall (chalkboard wall) located far from the slits and in a plane parallel to the pane containing the slits.

The equipment that we are using are a laser, slit slides and a double and multiple, diffraction, and a meter stick to measure how to project the laser.

To begin the process of the lab we had to place the He-Ne laser and the double slit slide in the holder on the optical bench. Then we measured it how far is to project it. Using d hm/D= my with your measured values of hm, D and dA calculate the wavelength for each m value. Replace your measurements for Pattern B. In this case we use ‘y’ to calculate values for the slit separation d.

Data

On separate sheet

Conclusion/ Data Analysis

In our experiment we learned how to examine the interference of light waves and to observe how the interference pattern depends on the wavelength of the light and the geometry of the apertures. During the lab I was the one who drew the light presented on the wall. I tried my best to dare and shade in the lights and spaces exactly.

Post Lab Questions

1.

Introduction