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Aug 12, 2016 at 15:14 history edited Wolpertinger CC BY-SA 3.0
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Aug 12, 2016 at 15:13 comment added Wolpertinger @garyp oops, i think i read that third picture wrong, i thought that was the second one inverted. my bad, i'll edit
Aug 12, 2016 at 14:44 comment added user115953 3rd wave also in forward (rightward). all waves are drawn in same direction. For each wave there are 3 arrows. one for E, one for M (or B) and one for wave motion. I forgot to give labelling on the right column on fig 2a
Aug 12, 2016 at 14:40 comment added garyp They all look ok to me. Which one is wrong, and why?
Aug 12, 2016 at 13:18 history answered Wolpertinger CC BY-SA 3.0