The proof of mass vector.
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From: Bob Kolker on 26 Apr 2007 19:10 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 26 Apr 2007 19:35 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 26 Apr 2007 20:19 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 26 Apr 2007 20:25 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 26 Apr 2007 20:59
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. |