- #1
heavystray
- 71
- 0
hi,
so i want to ask why is the inert gas pressure in an incandescent bulb should be low?
i thought that when the gas pressure is high, more 'free' tungsten atoms can collide with the gas particles (since the gas particles move at higher speed) and bounce right back towards the filament. hence, the rate of evaporation of atoms are further reduced. so, the bulb will be brighter since the filament can be heated to a higher temperature without disintegrating the filament. (and the bulb would last longer too)
or my concept is just totally wrong?
thanks in advance!
so i want to ask why is the inert gas pressure in an incandescent bulb should be low?
i thought that when the gas pressure is high, more 'free' tungsten atoms can collide with the gas particles (since the gas particles move at higher speed) and bounce right back towards the filament. hence, the rate of evaporation of atoms are further reduced. so, the bulb will be brighter since the filament can be heated to a higher temperature without disintegrating the filament. (and the bulb would last longer too)
or my concept is just totally wrong?
thanks in advance!