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# Lap - Lab Report Example

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Experiment #2: The Size of the Moon YOUR NAME Viewing location and other student present if any Statement of Purpose: The purpose of the experiment is the measurement of the angular size of the moon. The angular size of the moon refers to the number of arc degrees the width of the moon occupies in the sky…

## Extract of sampleLap

Download file to see previous pages... Explanation of Procedure: A meter stick was mounted at slightly greater than eye level, level to the ground. A plumb bob, actually a string with a nut tied to the end, hung at head level exactly 0.5 meters from the meter stick. This served as an observation post with easily converted and consistent measures. As the moon fully rose past the horizon, two index cards were “butted” to either edge of the moon and the indicated length was recorded. This procedure was repeated later. Data and Calculations: The chart results: time d (cm) D (cm) conversion ? 7:10 50 0.5 205265 2053 10:10 50 0.5 205265 2053 Where: d=50 cm as set by the experiment. D= the measure between the cards ?=the angle size of the moon in arc seconds calculated as =(D/d) x 205265 The diameter of the moon is calculated as: D= (205265 x 2053)/ 380000km d=3800 km The angular size of the moon by calculation is: 2053 arc seconds The estimated diameter of the moon is: 3800 km The angular size of the moon is consistent throughout a one night period; however, the distance to the moon varies over time, so over years, the angular size changes Conclusions and Analysis: The method used produces a good approximation of the diameter of the moon. ...Download file to see next pagesRead More
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