Drawing on Eratosthenes' method, if two observers are due north and south of each other and are separated by 400 km, what is the circumference of their spherical world if they see the same star on their meridian at altitudes of 23 degrees and 47 degrees respectively, and at the exact same time?© BrainMass Inc. brainmass.com October 17, 2018, 2:40 am ad1c9bdddf
Estimating the circumference of a body based on Eratosthenes' method:
Two observers positioned at S1 & S2 on a North-South meridian see a star (observed at the same time) at altitudes of 47 deg and 23 deg respectively. If their physical separation S1-S2 is 400 km what is the circumference of their world.
First we can assume that the starlight is ...
Determining the circumference of an observers world using angles of inclination of two stars and Eratosthenes theorem
Rhetorical Analysis of Lysias 1: On the Murder of Eratosthenes
1.Your rhetorical analysis should analyze a text, not simply describe it. In other words, the analysis should shed light on the text by using the rhetorical concepts introduced in this unit.
2.The analysis should use specific examples from the chosen text to support the observations and claims that you make in your essay. It should demonstrate attention to detail and depth of thought.
3.Your essay should have a beginning, a middle, and an ending. These portions of the essay should fulfill the needs and anticipations of readers and enhance the meaning of your essay.
4.Your essay should have a title—strive for one that is meaningful and/or creative.
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