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#1 2013-12-02 03:37:32

Al-Allo
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Vector question

Hi, I'm learning vectors and there's two notions which I don't distinguish :

Is the orientation of a vector (determined by the angle it has) the same thing as the direction of a vector ???

thank you

#2 2013-12-02 04:04:08

bobbym
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Re: Vector question

Hi;

It is a fine point, my notes read like this,

The direction of a vector is a built in property of that vector, you can define the direction of a vector without any reference to the outside world.

Orientation depends on how it is placed with respect to other vectors (like a basis).


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#3 2013-12-02 04:19:48

Al-Allo
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Re: Vector question

mmmmmhh...... not sure....

#4 2013-12-02 04:29:54

bobbym
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Re: Vector question

Part of it can be backed up here on the first page:

http://www.eng.auburn.edu/~marghitu/MEC … 1_2110.pdf


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#5 2013-12-02 09:08:53

Nehushtan
Power Member

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Re: Vector question

Orientation is the angle the vector makes with a fixed axis, e.g. the x-axis. Direction is whether its pointing up or down, or left or right.


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