Is yaw as in the movement within a vortex?

I always thought it's what a plane did when turning along its axis (the one from nose to tail).

There's three ways a ship (air or water) can move. If you imagine axes, two horizontal, one running the length of the ship (x), one running across the ship (y) and one vertical, running up and down through the middle (z). Rotation about the x-axis is called roll, rotation about the y-axis is called pitch, z-axis rotation is called yaw. In an airplane roll is when the wings go up and down alternately, pitch is when the nose goes up or down and yaw the nose waggles back and forth relative to the direction of travel.

So, basically what jheem said only more specific and less understandable.

And then there's a cousin to syphilis, fortunately less
serious. I've never seen a case.
Rare (in the US) diseases caused by organisms related to T. pallidum are bejel, yaws and pinta.

Yaws is a crippling and disfiguring disease affecting some 50 million people in the world © WHO

OK, lemme get this *straight:

Nod my head up and down to indicate 'yes' = pitch
Shake my head back and forth to mean 'no' = yaw
Crack my neck like a chiropractor would = roll

*straight

You got it.

On a large Navy ship the roll was felt as an angular thing, the pitch, which was more noticeable far forward or far aft than it was amidships, was felt as a weight change. Yaw was probably noticed only by the helmsman.

I can remember long ago seeing underpowered light planes
at almost 45degress to line of travel.

underpowered light planes
at almost 45degress to line of travel.

Does this mean they were *pitching hard for enough lift to stay aloft?

I was correct then, Faldage, because a vortex yawing in a pool would be Musick's head moving in an extended 'Noooooooooooooooooooooooooooooooo'---or like Linda Blair.

That's pretty funny....I was thinking bejel, yaws and pinta were the names of Colubus' ships, but my dear Sandra said no, it's a law firm.

Ron.

z-axis rotation is called yaw Ah--like windshield wipers! (I hope.)

like windshield wipers!

I'd say windshield wipers were more roll. Unless your windshield is lying flat.

Simply put, when you turn the steering wheel on your car, it results in a right or left yaw.

Which reminds me: some guy named Hatfield rode his explosives-loaded mule into a residence housing a bunch of McCoys and blew the place up. Were any of you aware that the Hatfields had declared another gee-hawed against the McCoys.

Argggghhhh. Glad to see you back in form, Ted.

Dang it, when will you people learn to read my mind?! When I said windshield wipers, I was imagining two centerpoints in the windshield (one for each wiper), and the wipers moving to the right and to the left of these. Or, let's just say one centerpoint and one wiper. No downward or upward motion at all, strictly right and left? Like Ted said--I hope?

No downward or upward motion at all, strictly right and left?

On my car there is upward and downward motion on the widnshield wipers. That's because my windshield has up and down to it. Now maybe if you had wipers on your sun-roof…

Attually® on most windshields these days there is roll and yaw going on, cause the windshield isn't straight up and down.

Your turntable is all yaw. (you remember turntable?)

think more about sliding around the corner, fishtailing. that'd be a yaw...

The movement of windshield wipers is definitely roll. Yaw would be if someone hit your car and it spun around in a 360. Pitch would be if it went end over end over the guardrail. Double roll would be the windshield wipers plus the car rolling over on its sides.

Probably not related is thinking about musical pitch going up and down. I think of pitching a roof--taking it up high--and musical pitches. And that ship pitching over the waves--its bow rising and falling over the waves. Would the pitch of a ship--the origin of the word--have anything in common with musical pitch?

Would the pitch of a ship--the origin of the word--have anything in common with musical pitch?

You can pitch a voice, a ship or an egg, Wordwind.

But which came first, the voice or the egg?

Or the ship or the egg?

Shakespeare wrote about "enterprises of great pitch and moment" so our search for "pitch" would have to start long before that.

The longer the pitch, the deeper the mystery.

BTW "perfect pitch" is a very rare thing. The last perfect pitcher I remember is David Wells against the Twins almost 6 years ago (May 17, 1998).

Going back to the origins of "pitch", my guess is they were pitching woo long before sailors were pitching and tossing at sea.