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**Al-Allo****Member**- Registered: 2012-08-23
- Posts: 293

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

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 84,516

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.**

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**Al-Allo****Member**- Registered: 2012-08-23
- Posts: 293

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

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 84,516

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

**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.**

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