Recent content by shiromani

  1. S

    Undergrad Polarization and refractive index

    Could you tell me what is a birefringent material?
  2. S

    High School What is the difference between vectors and scalars?

    What is direction of vector. Define direction of vector
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    High School Is the center of inertia the same as the center of mass?

    Is center of inertia a valid concept? I think inertia is quantitative concept.
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    Graduate Wave second order derivative equation

    Thanks.
  5. S

    Graduate Wave second order derivative equation

    Whenever the second order derivative of any physical quantity is related to its second order space derivative a wave of some sort must travel in a medium, why this is so?
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