Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2013-12-01 04:37:32

Al-Allo
Member
Registered: 2012-08-23
Posts: 290

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

Offline

#2 2013-12-01 05:04:08

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,749

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.

Offline

#3 2013-12-01 05:19:48

Al-Allo
Member
Registered: 2012-08-23
Posts: 290

Re: Vector question

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

Offline

#4 2013-12-01 05:29:54

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,749

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.

Offline

#5 2013-12-01 10:08:53

Nehushtan
Member
From: London
Registered: 2013-03-09
Posts: 607
Website

Re: Vector question

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


147 books currently added on Goodreads

Offline

Board footer

Powered by FluxBB