written by
Roger A. Freedman
This media module on the Universe textbook website introduces the concept of parallax. It includes a definition, a calculator for converting parallax measurements to distance, and examples to test student understanding.
This module is one of a series of online learning tools to supplement an introductory astronomy textbook.
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<a href="https://www.compadre.org/portal/items/detail.cfm?ID=889">Freedman, Roger. Universe: Using Parallax to Determine Distance. February 5, 2006.</a>
R. Freedman, (2004), WWW Document, (http://bcs.whfreeman.com/universe6e/pages/bcs-main.asp?v=category&s=00070&n=19070&i=19070.03&o=|19000|01000|&ns=0).
R. Freedman, Universe: Using Parallax to Determine Distance (2004), <http://bcs.whfreeman.com/universe6e/pages/bcs-main.asp?v=category&s=00070&n=19070&i=19070.03&o=|19000|01000|&ns=0>.
Freedman, R. (2006, February 5). Universe: Using Parallax to Determine Distance. Retrieved June 9, 2026, from http://bcs.whfreeman.com/universe6e/pages/bcs-main.asp?v=category&s=00070&n=19070&i=19070.03&o=|19000|01000|&ns=0
Freedman, Roger. Universe: Using Parallax to Determine Distance. February 5, 2006. http://bcs.whfreeman.com/universe6e/pages/bcs-main.asp?v=category&s=00070&n=19070&i=19070.03&o=|19000|01000|&ns=0 (accessed 9 June 2026).
Freedman, Roger. Universe: Using Parallax to Determine Distance. 2004. 5 Feb. 2006. 9 June 2026 <http://bcs.whfreeman.com/universe6e/pages/bcs-main.asp?v=category&s=00070&n=19070&i=19070.03&o=|19000|01000|&ns=0>.
@misc{
Author = "Roger Freedman",
Title = {Universe: Using Parallax to Determine Distance},
Volume = {2026},
Number = {9 June 2026},
Month = {February 5, 2006},
Year = {2004}
}
%A Roger Freedman %T Universe: Using Parallax to Determine Distance %D February 5, 2006 %U http://bcs.whfreeman.com/universe6e/pages/bcs-main.asp?v=category&s=00070&n=19070&i=19070.03&o=|19000|01000|&ns=0 %O application/java %0 Electronic Source %A Freedman, Roger %D February 5, 2006 %T Universe: Using Parallax to Determine Distance %V 2026 %N 9 June 2026 %8 February 5, 2006 %9 application/java %U http://bcs.whfreeman.com/universe6e/pages/bcs-main.asp?v=category&s=00070&n=19070&i=19070.03&o=|19000|01000|&ns=0 Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
Citation Source Information
The AIP Style presented is based on information from the AIP Style Manual. The APA Style presented is based on information from APA Style.org: Electronic References. The Chicago Style presented is based on information from Examples of Chicago-Style Documentation. The MLA Style presented is based on information from the MLA FAQ. |
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