Thomas Edison invented the light bulb in October 1879. He worked with his team to develop a long-lasting light bulb, trying over 1,500 materials before settling on one with a carbon filament that lasted nearly 200 hours. While incandescent bulbs are inefficient, converting only 4-6% of power to visible light, they remain widely used due to their low cost and ease of incorporation into electrical systems.

2. The light bulb
• Thomas Edison was
born on February 11,
1847 and died
on October 18, 1931
in New Jersey. He
was 84 years of age.
 The light bulb was
invented by Thomas
Edison. Thomas
Edison created the
light bulb in October
22, 1879.

3. Light bulb
 Positive  Negative
Without light bulbs Incandescent light bulbs use
significantly more electricity
you cant see anything in than other light emitting bulbs
the night. Candles can such as fluorescent bulbs.
fall and burn. Depending on the cost of your
electricity, average savings for
using fluorescent lighting for
a comparable incandescent
bulbs may be $60-$75 per
year assuming 4 hours of
usage a day.

4. Candles
Back in the day people used
candles . Some candles are
scented and bad for your
health. Candles are bad for
the environment, because
they release an assortment
of pollutants when they are
burned, just like anything
else, as combustion
generates an assortment of
chemical compounds

5. Albert Einstein Thomas Edison
Ben Franklin George Washington

6. Albert Einstein Thomas Edison
Wrong 
Ben Franklin George
Washington

7. Albert Einstein Thomas Edison
Correct !
Ben Franklin George
Washington

8. Thomas Edison
 He and his team
worked to make a
light bulb which
would burn for a long
time without burning
out. They tried 1,500
materials and nothing
worked well. Finally
he tried a new
material in the
filament that burned
nearly 200 hours.

9. Thomas Edison
 The early solution to this
dilemma was to operate
the filament at lower
temperatures to attain
reasonable life. However,
the incandescent
brightness of the bulb
was sacrificed in the
process. Other light bulb
inventors tried two new
filament materials to
improve bulb brightness.

10. Thomas Edison

11. Thomas Edison
 1887 Develops the
New phonograph ,
using a wax
cylinder. Edison
Phonograph Co.
formed in October.
Moves to a larger
and more modern
laboratory in West
Orange, New
Jersey.

12. Thomas Edison
1894-.- First Kinetoscope
parlor opened in midtown
Manhattan on April 14.-
Puts the Edison
Manufacturing Co. in
charge of the manufacture
and sale of Kinetoscopes
and films on April 1.

13. Thomas Edison
 In 1881 he creates
the Edison Electric
Lamp Co., the
Edison Machine
works and other
companies to
produce his electric
lighting system.

14. Thomas Edison
 Modern incandescent bulbs are
not energy efficient, only four
to six percent of the electrical
power supplied to the bulb is
converted into visible light. The
remaining energy is lost as
heat. However these inefficient
light bulbs are still widely used
today due to many advantages
such as: wide, low-cost
availability
 easy incorporation into
electrical systems
 adaptable for small systems
 low voltage operation, such as
in battery powered devices
 wide shape and size availability

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