Week 2 Lab Report

# Week 2 Lab Report - ACADEMIA @ UCI Physics 3LC Week 2...

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ACADEMIA @ UCI Physics 3LC 2.2.2 OBJECTIVE : The goal of this experiment is to find the intensity of a desk lamp measured by a photometer then comparing the intensity to the distance between the light source and the photometer. DESCRIPTION : Describe the apparatus and procedures used in this section. Notes on procedure should include the kind of specifications that would help you repeat the experiment and confirm its results long after you performed it (e.g. is your desk lamp set on low or high? Does the laser require careful positioning to achieve a maximum reading on the photometer? Referring to the Physics 3LC lab manual (page 14) for the set up procedure. Desk lamp set on low, digital multi-meter set on 2-V. The background noise that was caused by the desk lamp was found to be 0.0025-V. The photometer was placed 21-cm from the laser. On the optical bench, began measuring 10-cm from laser on optical bench 91.5-cm. Laser had lined up exactly where optical bench ruler was. The photometer was raised 10.5-cm from the base. *DRAW DIAGRAM OF THE EXPERIMENTAL SETUP! DATA AND ANALYSIS: Source-Detector Distance (cm) Lamp Intensity (volts) Raw, Normalized, Theory (R o 2 /R 2 , R o /R) Laser Intensity (volts) Raw 10 0.94, 2.23, 9, 3 0.95 20 0.76, 1.81, 2.25, 2 0.94 30 0.42, 1.0, 1.0, 1.0 0.94 40 0.26, 0.62, 0.56. 0.75 0.94 50 0.17, 0.40, 0.36, 0.6 0.94 60 0.13, 0.28, 0.25, 0.5 0.94 70 0.10, 0.23, 0.18, 0.42 0.94 *GRAPH 2.2.2. - For the LAMP DATA, plot the NORMALIZED values on GRAPH paper ( to be torn from the

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## This note was uploaded on 04/08/2008 for the course PHYS 3LC taught by Professor Kiratov during the Fall '07 term at UC Irvine.

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Week 2 Lab Report - ACADEMIA @ UCI Physics 3LC Week 2...

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