In: Mechanical Engineering
A thin tungsten wire (i.e. a filament) is heated to a given temperature T. In the visible range (i.e. wave length between 0.39µm and 0.77µm), Determine the following for the four cases listed below:
(a) the band fraction of emitted radiation energy
(b) the blackbody radiation energy emitted
The four cases correspond to to following values of T: (i) T=500K (ii) T=1500K (iii)T=2500K (iv) T=3500K
The melting temperature of tungsten is 3698K. Show all calculation details.