light bulb?

Audioguru

Joined Dec 20, 2007
11,248
There is an old incandescent light bulb that is still lighted after more than 60 years.
1) It is dim so it is not very hot.
2) It has been at the same temperature all the time. Most incandescent bulbs burn out when they are cool and when they are turned on then the current surge is very high which blows them.
 
Top