GNav Basics 4a: Convergency 1 

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Re-uploaded due to some audio issues!
This is the fourth video in a series covering the basics of GNav for ATPL students. Originally this video was going to be really long so I cut it into two parts. This first part looks at Earth convergency, and the next part will look at convergency between rhumb lines & great circles!
This series of GNav Basics also includes:
Video 1: • GNav Basics 1: Lat/Lon... . Refresher on Latitude & Longitude
Video 2: • GNav Basics 2: All Ab... . The Departure Formula
Video 3: • GNav Basics 3: Great ... . Great Circles & Rhumb Lines
Video 4b: • GNav Basics 4b: Conve... . Convergency (part 2): Rhumb Line and Great Circle Convergency, & Conversion Angle.
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