black_brook t1_j2lg62t wrote
Reply to comment by wi_voter in Researchers have discovered a new situation from the everyday environment where our crucial ability to perceive what is truly vertical is compromised: when our body pitches (body pitch) and moves at the same time (body motion) by giuliomagnifico
Pitch, yaw, and roll, are the terms used for the 3 different possible rotational motions in 3d space. They are used in aeronautics and I expect other disciplines where these are important. Pitch is the motion your head makes if you nod it.
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