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A collection of some classic Lemmy memes for your enjoyment

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There are two kinds of people. (infosec.pub)

submitted 3 days ago by The_Picard_Maneuver@piefed.world to c/memes@lemmy.world

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[–] t0fr@lemmy.ca 10 points 3 days ago (1 children)

There are clearly more than two. In the top image that z-axis is pointing in the wrong direction.

[–] grue@lemmy.world 1 points 3 days ago (1 children)

Z pointing in the other direction is the same as the bottom image, just rotated.

[–] davidagain@lemmy.world 3 points 3 days ago* (last edited 3 days ago) (1 children)

No, the bottom image correctly follows the right hand rule (1,2,3=x, y, z on your thumb and two fingers at right angles), whereas the top one is wrong because it doesn't. It would be OK if the z axis in the top one pointed towards us. Top one would be a mirror image as well as rotation of the bottom one.

[–] grue@lemmy.world 2 points 3 days ago (2 children)

Right, that's what I said: if Z in the top image were pointing the opposite direction (i.e. if it followed the right hand rule), it would be the same as the bottom image. Rotation is irrelevant; only handedness matters.

[–] t0fr@lemmy.ca 1 points 3 days ago

I think the comic is trying to illustrate the difference between people who consider Y to be the vertical axis or z to be the vertical axis.

I think the right hand rule vs left hand rules coordinate systems was a mistake.

[–] davidagain@lemmy.world 1 points 3 days ago

Oh I'm so sorry, I misunderstood you completely; now that I reread it, I see I have been a dufus!