Presentation about lightning system
and light bulb
Enjoy watching !
Chapter 1 : How does this invention
work (the most important information) Chapter 2 : Who discovered it (when?,
where?, how?)
Introduction
First Chapter
Light bulb :
- produces light
- it has a simple structure
- it’s very useful for people
Invention
Structure
1. glass bulb
2. inert gas
3. tungsten filament
4, 5. contact wires
6. Support wires
7. stem
8. Contact wire
9. cap(sleeve)
10. thermal insulation ring
11. electrical contact
Light bulb :
- Works under high temperature Heat flows through the tungsten wire
which is the most important part of the light bulb
Action of light bulb
Types of lightbulbs : Incandescent bulbs (ordinary) CFLs LED Light Bulbs Halogen bulbs (halogen)
Types of light bulbs
Second Chapter
Date of birth : 1879 Date of death : 1931 Family : 4 sons and 2 daughters with
2 wifes
The most important facts
Thomas Alva Edison : A creator of many useful inventions for
people A member of the National Academy of
Sciences in Washington
Inventor
1886 – Edison Electric Light Company
was founded 1911 –The first power station and the
first electric urban lighting system were built by the company
1887 – West Orange Lab was opened
Company
Other inventions
His other inventions were :
- Dictaphone (tape recorder)
- gramophone record
- film camera
- phonograph…
The End
Prepared by : Krystian Fabinski