engineering fundamentals Discussion Forum
Directory | Career | News | Standards | Industrial | SpecSearch®
Home Membership Magazines Forum Search Member Calculators

Materials

Design

Processes

Units

Formulas

Math
List Recent Topics | Start a New Topic
 

<< Previous Message No. 12813 Next >>
Author: ozogg
Time: 12/13/03 05:34 PST
This is a reply to message no. 12809 by b1ueshift
Reply | Original Message | New Topic | List Topics | List Messages on This Topic
Current Topic:
Rotation as a vector
In reply to b1ueshift, msg:12809.

You assert (without any discussion, let alone proof) that angular displacement (say, for example,  10degrees CW, from the standard reference of +X axis) is a vector

BECAUSE

this displacement has direction AND magnitude.

Sure, 10degrees is a magnitude.

But CW is a planar (scalar) term, not a direction, for how can this "CW" be expressed in terms of base vectors ?  It is irrelevant what system of base vectors we use, i,j,k (Cartesian) or Spherical, or Cylindrical, etc.

Go see my reply, ozogg:msg: 12812, to acroduster:msg: 12768.

Doesn't anyone read fundamental maths texts anymore, let alone maths encyclopedias ?

ozogg.
[ List Replies to This Message Only ]

Home  Membership  About Us  Privacy  Disclaimer  Contact  Advertise

Copyright © 2017 eFunda, Inc.