کارت شما خالی است
Close-up view of a bulb's filament
Close-up view of a bulb's filament
The filament is made of a metal with high melting point and it is wound into a double spiral
فيزيك
Grade 9
71 kB
موزالينک
/لينک وب
The filament is made of a metal with high melting point and it is wound into a double spiral
فيزيك
Grade 9
71 kB
موزالينک
/لينک وب