Question

when current passes through filament it emits light but not in other wires why?Write in short.
Thermosphere is important for communications.explain

Answer 1

Explanation:

1)the filament is mainly made up of the tungsten because it has more melting point nearly 3380°c

and works on the principal of heating effect of current and heat is emmited it converted into light energy

2)because it reflects the ions there it called as ionosphere