State the propagation of heat in liquids and in A vacuum
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Heat can flow in a vacuum by a process called radiation, which is the transfer of energy through electromagnetic waves. ... A fluid is any material in a state that flows, and heat flows in fluids (including liquids and gases) by a process called convection.
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In vacuum there have no material medium. So Heat transfer only takes place by Radiation only.
A LIQUID is any material in a state that flows, and heat flows in liquid by a process called convection.
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