3 ms·

I don't think it does, but rather says whatever direction the first one is pointing in is exactly the same as the direction the second one points in.

• PittleyDunkin 2y ago
  Parellelism doesn't imply directionism at all.
  • gus_massa 2y ago
    From a mathematical point of view: no, no directionism at all. From a physicist working with spins point of view: yes, parallel has the same direction and antiparallel the oposite. Each area create their own jargon. Sometimes it's confusing to ousiders and when you pick a book from another area you must double check that the worlds mean what you think their mean.
    • gilleain 2y ago
      For what it's worth, protein structural biochemistry uses similar terminology for sheets. Since a strand has a direction (N to C), sheets are 'parallel' when neighbouring strands are pointing (roughly) in the same direction, and 'antiparallel' when pointing in opposite directions.