Wednesday, November 05, 2008

tricks for apo and peri

I learned some tricks this evening, during the NOVA course, that others use to remember the distance associated with the prefixes "apo" and "peri," such as in aphelion (of the Sun) and perigee (of the Moon).

Alliteration: "apo" starts with the same later as "away."

Size: "apo" is the same length as "far;" whereas, "peri" is the same size as "near."

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