What power input is required to maintain the sphere

Reference no: EM13321631

The emissivity of tungsten is 0.35. A tungsten sphere of radius 1.5 cm is suspended within a large evacuated enclosure whose walls are at 300 K. What power input is required to maintain the sphere at a temperature of 3000 K. Assume that heat conduction along the supports can be neglected.

Reference no: EM13321631

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