Incandescent light bulb:
Light bulb is an electric light with a wire filament heated to such a high temperature that it glows with a visible light. The fliament heated by passing an electric current is protected from oxidation with a glass or quartz bulb that is filled with inert gas or evacuated. The first recorded inventor of a light bulb was de Moleyns who in 1841 created a small electric lamp. It wasn't very successful invention because the platinum wire he used was easily melting. Much better was a bulb with carbon fiber obtained from charred bamboo created in 1854 by Henry Goebel. The third bulb inventor Alexander Łodygin's creation in 1873 lighted for 30 minutes. Among the light bulb inventors two of them stood out: Joseph Wilson Swan who used bayonet base in his bulb which in 1878 lighted for 13,5 hours and Tomas Alva Edison whose bulb in 1879 lasted for tens of hours. Swan's patent blocked the european market from Edison so they started the company named "Siemens Edison Swan". Till today we use Edison's bulbs with threaded shaft (Edison - E27) in our houses and Swan's bayonet base in car lights.
Edison's light bulbs:
It's all very nice but why is the bit below pasted here from Wikipedia, the patron saint of plagiarists? Sorry, maybe not pasted as there is one spelling mistake.
OdpowiedzUsuń"Light bulb is an electric light with a wire filament heated to such a high temperature that it glows with a visible light. The fliament heated by passing an electric current is protected from oxidation with a glass or quartz bulb that is filled with inert gas or evacuated."