From: Bob Kolker on
Ka-In Yen wrote:

> On Apr 24, 9:25 am, Bob Kolker <nowh...(a)nowhere.com> wrote:
>
>>Ka-In Yen wrote:
>>
>>
>>>Dear Bob Kolker,
>>
>>>Thank you for your comment. Pressure(p) is a scalar.
>>>Force and area are vectors.
>>
>>Force can be represented by a vector. That is because forces have both
>>megnitude and direction. Area cannot. Area is a measure. What is the
>>direction of an area?
>
>
> Let's check this equation Pressure = Force / Area.
> If force is a vector and area is a scalar, then
> pressure is a vector. This is a disaster of physical
> mathematics.

You did not answer my question.

What is the direction of an area?

Bob Kolker

>
From: Phineas T Puddleduck on
In article <59cpr5F2ko7f6U1(a)mid.individual.net>,
Bob Kolker <nowhere(a)nowhere.com> wrote:

> Ka-In Yen wrote:
>
> > On Apr 24, 9:25 am, Bob Kolker <nowh...(a)nowhere.com> wrote:
> >
> >>Ka-In Yen wrote:
> >>
> >>
> >>>Dear Bob Kolker,
> >>
> >>>Thank you for your comment. Pressure(p) is a scalar.
> >>>Force and area are vectors.
> >>
> >>Force can be represented by a vector. That is because forces have both
> >>megnitude and direction. Area cannot. Area is a measure. What is the
> >>direction of an area?
> >
> >
> > Let's check this equation Pressure = Force / Area.
> > If force is a vector and area is a scalar, then
> > pressure is a vector. This is a disaster of physical
> > mathematics.
>
> You did not answer my question.
>
> What is the direction of an area?


He never answered my question as to the direction of an irregular
arbitarily-curved area Bob. This is one question he will duck and dive.

--
Sacred keeper of the Hollow Sphere, and the space within the Coffee Boy
singularity.

COOSN-174-07-82116: alt.astronomy's favourite poster (from a survey taken
of the saucerhead high command).
From: Ka-In Yen on
On Apr 27, 7:10 am, Bob Kolker <nowh...(a)nowhere.com> wrote:
> Ka-In Yen wrote:
> > On Apr 24, 9:25 am, Bob Kolker <nowh...(a)nowhere.com> wrote:
>
> >>Ka-In Yen wrote:
>
> >>>Dear Bob Kolker,
>
> >>>Thank you for your comment. Pressure(p) is a scalar.
> >>>Force and area are vectors.
>
> >>Force can be represented by a vector. That is because forces have both
> >>megnitude and direction. Area cannot. Area is a measure. What is the
> >>direction of an area?
>
> > Let's check this equation Pressure = Force / Area.
> > If force is a vector and area is a scalar, then
> > pressure is a vector. This is a disaster of physical
> > mathematics.
>
> You did not answer my question.
>
> What is the direction of an area?

Dear Bob,

In 3D vector algebra, there are four basic
operations: addition, dot product, cross
product, and scalar multiplication. To get
the area of the parallelogram generated
from vectors A and B, cross product has
to be used: area=AXB; so the area
HAS TO be a vector.

A parallelepiped is constructed from three
vectors: A, B, and C. The volume of the
parallelepiped is

volume=A dot (B cross C).

>From the above equation, we can conclude
that area HAS TO be a vector.

From: Phineas T Puddleduck on
In article <1177633150.538170.39860(a)c18g2000prb.googlegroups.com>,
Ka-In Yen <yenkain(a)yahoo.com.tw> wrote:

> > What is the direction of an area?
>
> Dear Bob,
>
> In 3D vector algebra, there are four basic
> operations: addition, dot product, cross
> product, and scalar multiplication. To get
> the area of the parallelogram generated
> from vectors A and B, cross product has
> to be used: area=AXB; so the area
> HAS TO be a vector.
>
> A parallelepiped is constructed from three
> vectors: A, B, and C. The volume of the
> parallelepiped is
>
> volume=A dot (B cross C).
>
> >From the above equation, we can conclude
> that area HAS TO be a vector.


You did not answer Bob's question.

--
Sacred keeper of the Hollow Sphere, and the space within the Coffee Boy
singularity.

COOSN-174-07-82116: alt.astronomy's favourite poster (from a survey taken
of the saucerhead high command).
From: Eric Gisse on
On Apr 26, 4:19 pm, Ka-In Yen <yenk...(a)yahoo.com.tw> wrote:
> On Apr 27, 7:10 am, Bob Kolker <nowh...(a)nowhere.com> wrote:
>
>
>
> > Ka-In Yen wrote:
> > > On Apr 24, 9:25 am, Bob Kolker <nowh...(a)nowhere.com> wrote:
>
> > >>Ka-In Yen wrote:
>
> > >>>Dear Bob Kolker,
>
> > >>>Thank you for your comment. Pressure(p) is a scalar.
> > >>>Force and area are vectors.
>
> > >>Force can be represented by a vector. That is because forces have both
> > >>megnitude and direction. Area cannot. Area is a measure. What is the
> > >>direction of an area?
>
> > > Let's check this equation Pressure = Force / Area.
> > > If force is a vector and area is a scalar, then
> > > pressure is a vector. This is a disaster of physical
> > > mathematics.
>
> > You did not answer my question.
>
> > What is the direction of an area?
>
> Dear Bob,
>
> In 3D vector algebra, there are four basic
> operations: addition, dot product, cross
> product, and scalar multiplication. To get
> the area of the parallelogram generated
> from vectors A and B, cross product has
> to be used: area=AXB; so the area
> HAS TO be a vector.

No, retard.

Area = | A x B |

>
> A parallelepiped is constructed from three
> vectors: A, B, and C. The volume of the
> parallelepiped is
>
> volume=A dot (B cross C).
>
> >From the above equation, we can conclude
>
> that area HAS TO be a vector.


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