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Turbulent Flow

Flow descriptions such as Poiseuille's law are valid only for conditions of laminar flow. At some critical velocity, the flow will become turbulent with the formation of eddies and chaotic motion ...

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http://hyperphysics.phy-astr.gsu.edu/hbase/pturb.html#turb

Current Law

The electric current in amperes which flows into any junction in an electric circuit is equal to the current which flows out. This can be seen to be just a statement of conservation of charge.

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http://hyperphysics.phy-astr.gsu.edu/hbase/electric/ohmlaw.html#c3

Laminar Flow

A short introduction to laminar flow, a fluid dynamics term.

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http://hyperphysics.phy-astr.gsu.edu/hbase/pfric.html#lam

In a conductor, electric current can flow freely, in an insulator it can not. Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely ...

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http://hyperphysics.phy-astr.gsu.edu/hbase/electric/conins.html#c1

Electric Current

Electric current is the rate of charge flow past a given point in an electric circuit, measured in coulombs/second which is named amperes. In most DC electric circuits, it can be assumed that the ...

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http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elecur.html#c1

Resistance

The electrical resistance of a material is defined as the ratio of the voltage applied to the electric current which flows through it.

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http://hyperphysics.phy-astr.gsu.edu/hbase/electric/resis.html#c1

Hall Effect

If an electric current flows through a conductor in a magnetic field, the magnetic field exerts a transverse force on the moving charge carriers which tends to push them to one side of the conductor. ...

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http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/hall.html#c1