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№ 31.67
Sold: 0
Uploaded: 15.01.2016
Content: 31.67.rar 156,15 kB
Uploaded: 15.01.2016
Content: 31.67.rar 156,15 kB
Product description
Ignoring losses on heat conductivity, to find power of electric current, necessary for incandescence of filament the diameter of a 1 mm and long a 20 cm to the temperature 2500 Kelvin. To consider that a filament radiates, as a black body and after establishment of equilibrium the amount of warmth all distinguished in a filament is lost on a radiation.
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