Quote:

> And if you really enjoy this stuff (I do), dig up a copy of McConnell,

> "Applications of Tensor Analysis". Dot and cross products become

> trivial straight forward items. You even learn that the so-called cross

> product can only be represented by a vector in a three dimensional

> space.

That's how I think of it, a vector pointing out in 3-space from the point

where the two other two vectors are made to touch (tail to head). I can't

think of where I got that visualization, though (it was from a book). For

something like torque it is very intuitive. The dot product I think of as

something like the length of the shadow (cos theta) of one vector on the

other (it's just a scalar, of course).

P.S. To be pedantic, the dot product is only a vector in 3-d space if the

other two vectors were in 2-d space to begin with, but the visualization

is still very useful.

Best regards,

--

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Spehro Pefhany --"it's the network..." "The Journey is the reward"

Embedded software/hardware/analog Info for designers: http://www.speff.com

Contributions invited->The AVR-gcc FAQ is at: http://www.BlueCollarLinux.com

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