2 thoughts on “The Ominous Parallels”

  1. Tried this myself…. made some parallel marks on my thumb using a cd case.

    The apparent angle of the lines depends on the angle of the view plus straight lines on a curved surface look curved – you can make parallel lines or convergent line from tangents of two arcs.

    The other photo taken from a different angle looks close to parallel but even that photo angle is not the best.

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