Recent content by Arijit Dutta

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    Undergrad Definition of thermal equilibrium?

    I should have added- both the systems must be separated from their surroundings by adiabatic wall.
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    Undergrad Definition of thermal equilibrium?

    2 systems are said to be in thermal equilibrium with each other if there is no change in co- ordinates of either system when they are separated by a diathermal wall.
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    Undergrad Definition of thermal equilibrium?

    You are having a confusion between Thermal Eqb. and Steady State. Thermal Eqb.: Ṫ = 0 = ∇T Steady State: ∂T/∂t = 0; where T = T(r,t) is the temperature of the system.
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    Graduate Maxwell's Equations: Mutual consistency

    @ Meir Achuz But what about the gauge condition? Isn't it another constraint. So now there r 4 unknowns and 5 equations. Again a question of mutual consistency arises. @ Phrak I really don't get all that mathematics. Sorry, but I can't help. I guess I'm not upto ur level in mathematical...
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    Graduate Maxwell's Equations: Mutual consistency

    Please explain, could u?
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    Graduate Maxwell's Equations: Mutual consistency

    The no. of unknowns in the Maxwell's Equations is 6- the components of E and B. But there are 8 partial differential equations if we separate them out component- wise. So when we find the solution to them how do we ensure their mutual consistency?