Three, fluorescent candescent,and halogen
Billions
without light bulbs the modern world would be plunged into darkness. Light bulbs can not only produce light, but also heat, preventing the death of some pets, such as geckos, snakes, and lizards.
in the whole world? theres about ALLOT!
There are no light bulbs in the wizarding world.
everyone
The first person who invented light bulbs was Sir Joseph Swan. He was a British chemist and physicist. His house was the world's first place to be illuminated with light bulbs.
Beakman's World - 1992 Electricity Beakmania and Light Bulbs 1-7 was released on: USA: 31 October 1992
Believe it or not, an engineer put a bunch of light bulbs in the sky to light up the world. Before that, there was no source of light.
Yes; Edison invented the light bulb in 1879, though electric light bulbs weren't the dominant source of light until after World War I. Most Victorian homes used gas lighting or candles.
It's pretty hard to know but there may have been over a million lights (like fluorescent light bulbs) in the WTC.
last longer and cost less on your bill
no the world isn't doomed of different types of evil