Lancair crash at SnF On Apr 26, 9:43 am, Stefan <stefan@mus._INVALID_.ch> wrote:
> WingFlaps schrieb:
>
> >>>>>> In everyday's language, the word velocity stands for the _magnitude_ of
> >>>>>> the vector.
> >>>>> Nope. Not even at high school. The magnitude is "speed".
> >>>> Maybe where you live. Not where I live.
> >>> BS. This is stated in any basic physics text book -even Wiki knows it:
> >>> "In physics...The scalar absolute value (magnitude) of velocity is
> >>> speed."
> >> What part of "everyday's language" wasn't clear?
> > I can see you have trouble with English too.
>
> If my mediocre English is offending you, then feel free to converse in
> German, French, Italian or Spanish with me. I know all those languages
> better than English, which obviously isn't my native language. How many
> languages do _you_ speak?
>
> Nevertheless I know English good enough to know that in general use
> velocity is synonymous to speed. I don't expect you to agree with me,
> but maybe you accept an excerpt from the OED:
>
> velocity
>
> 1. a. Rapidity or celerity of motion; swiftness, speed.
>
> 1849 Macaulay Hist. Eng. iii. I. 379 The flying coaches are extolled as
> far superior to any similar vehicles ever known in the world. Their
> velocity is the subject of special commendation.
>
> c. In scientific use, speed together with the direction of travel, as a
> vector quantity.
>
> So again: If, outside a strictly scientific or technical environment,
> you choose to use a technical term which has a different meaning in
> general use than in scientific use, then better advise it.
Ok just for you I'll give you a heads up when I'm talking about
technical things just so you can place the conversation in the context
of your extensive(?) physics knowlege.
Technical comment :
Is there anyone here who thinks velocity is not used by pilots as a
vector (apart from Stefan)? I say the common parlance for the
magnitude of velocity is SPEED that is why you have an ASI in your
plane and a speedometer in your car. Anyone disagree?
I suggest that we are in a piloting forum, a technical environment,
and pilots do know the difference, e.g. they understand and use basic
physics and vector addition all the time... But I could be wrong and
if so I apologize for using technical terms correctly.
Cheers |