The text for definition 1. reads, "A change in the arrival time of a reflection because of the dip of the reflector. The quantity Δtd/Δx in Figure R-9." I do not think that R-9 is the correct figure, It does not show the quantity Δtd/Δx.
- Good catch! Definitely not the correct figure. I don't think D-20 is correct either (at least, it doesn't mention the quantities), but it's closer. If anyone unearths the right one, please edit the article! Note the same incorrect reference was made on Dictionary:Moveout so I did the same fix there. Matthall 08:48, 14 March 2013 (CDT)