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Thread: vector - scalar

  1. #1 vector - scalar 
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    What the difference between vector to scalar?


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  3. #2  
    Forum Ph.D. Heinsbergrelatz's Avatar
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    Scalar represents a quantity/magnitude.
    Vector represents a quantity/magnitude with direction.

    Example of a scalar includes speed,mass, temperature,electric charge etc... These all have values or quantities but neither of them has direction.

    Example of a vector is velocity, magnetic field etc... These all have directions.

    A more evident example would be; that car is travelling at 100km/h---scalar
    That car is travelling 100km/h toe the east---vector


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  4. #3  
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    Heinsberg is correct up to a point, though there is an interesting subtly, via equivalence classes, implied in the concept of a vector.

    But beware, this poster is a "hit and run poster", so I shouldn't work too hard to try and help him if I were you.
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  5. #4  
    Forum Ph.D. Heinsbergrelatz's Avatar
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    Quote Originally Posted by Guitarist
    Heinsberg is correct up to a point, though there is an interesting subtly, via equivalence classes, implied in the concept of a vector.

    But beware, this poster is a "hit and run poster", so I shouldn't work too hard to try and help him if I were you.
    lol, so there is a specific name given to these type of posters.. hmm interesting indeed :P
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  6. #5  
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    A scalar is a tensor of 0th order, a single number that is invariant under rotations of the coordinate system. A vector is a tensor of 1st order, an element of a vector space.
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  7. #6  
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    Scalars are quantity with magnitude only.
    Vectors have both magnitude and direction and can be added by triangle law.
    Eg speed is salar but velocity is vector.
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