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