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Originally Posted by AntonioLao The i-j-k are unit vectors therefore the axes are directional axes. When directions are attached to numbers, they change from scalars to vector quantities. Some physical quantities can only be described by vectors: force, electric field, magnetic field, gravitational field, velocity, acceleration, position, etc. Some physical quantities can best be described by scalars: mass, energy, density, temperature, volume, etc.
There are two distinct generalized fields: scalar fields and vector fields (samples are given as mentioned above).
When vector fields are multiplied together the products are tensor fields. |
That was exactly what I was wanting to arrive at. Tensors. Is there any physical quantity described as tensor? What is the spatial representation of tensors?
By the way, what is the product of the multiplication of a scalar and a vector (for example, mass times velocity)? Is it always a vector, like in E=mc^2?