Wien's displacement law states that the product of absolute temperature and the
wavelength at which the emissive power is maximum is constant i.e. \(\lambda _{max} \,T\) = constant
Therefore it expresses relation between wavelength corresponding to maximum energy
and temperature.
For a black body at temperature \(727^{\circ}C\), its radiating power is 60 watt and temperature of surrounding is \(227^{\circ}C\). If temperature of black body is changed to \(1227^{\circ}C\) then its radiating power will be:
Conductance is an expression of the ease with which electric current flows through materials like metals and nonmetals. In equations, an uppercase letter G symbolizes conductance. The standard unit of conductance is siemens (S), formerly known as mho.
Conductance in electricity is considered the opposite of resistance (R). Resistance is essentially the amount of friction a component presents to the flow of current.