Tanna Orgeron PowerPoint on TV History part 1 LMP middle school

1. TV PRODUCTION
Tanna Orgeron

2.  Anything on television or in film is based off
of the idea of:

3.  The ability of the brain to retain an image
a split second longer than the eye actually
sees it.

4.  The ability of the brain to retain an image
a split second longer than the eye actually
sees it.
 Persistence of Vision is the phenomenon
that explains why the intervals between
the successive images merge into a single
image as our eyes hold one image long
enough for the next one to take its place.

5.  Toy makers used this theory to create
hand held machines that were the basis of
film development.

6.  1834 by William Horner
 Circular drum
with slits.
◦ allows moments
of darkness.
◦ creates illusion
of movement.

7. In 1878 Edward Muybridge, an
Englishman, needed to settle a
$25,000.00 bet.
He believed that a galloping horse
had all four feet off of the ground
at the same time but others said
that this was impossible.
The problem was that galloping
hooves move too fast for the eye
to see.

8. To settle the bet indisputable
proof was needed. In an effort to
settle the issue once and for all an
experiment was set up in which a
rapid sequence of photos was
taken of a running horse.
When the pictures were developed
it was found that the horse did
indeed have all four feet off the
ground for a split-second.

9. Why is this significant?
In doing this experiment they
found out something else —
something that becomes obvious
from the illustrations of the horse
on the left.
That discovery would soon make
that $25,000 look like pocket
change.

10. When a series of still images of a
moving object are viewed at a
certain speed the illusion of
motion is created.
In the case of Muybridge’s series
of still photos, when they were
presented sequentially at 0.1
second intervals they created the
illusion of continuous motion.
This is Muybridge’s actual footage

12. 1897
Karl Ferdinand Braun develops the Cathode Ray Tube.

13. 1897
A cathode ray tube is a vacuum tube in which images are produced when
an electron beam strikes a phosphorescent surface.

14. Two main inventors began working with electronic
television and the Cathode Ray Tube
Philo T. Farnsworth Vladimir Zworykin

15. 1923
Vladimir Zworykin develops the kinescope for picture display.

16. 1927
PHILO T. FARNSWORTH (1906-1971)

17. 1927
PHILO T. FARNSWORTH (1906-1971)
*1918 - At the age of 12, he built an electric motor and produced the first electric
washing machine his family had ever owned.

18. 1927
PHILO T. FARNSWORTH (1906-1971)
*1918 - At the age of 12, he built an electric motor and produced the first
electric washing machine his family had ever owned.
*1921 - Conceived the world's first all-electronic television at the age of
15.

19. 1927
PHILO T. FARNSWORTH (1906-1971)
*1918 - At the age of 12, he built an electric motor and produced the first
electric washing machine his family had ever owned.
*1921 - Conceived the world's first all-electronic television at the age of
15.
*1927, Philo Farnsworth was the first inventor to transmit a television
image comprised of 60 horizontal lines. The image transmitted was a
dollar sign.

20. Who invented Television?
Vladimir Zworykin
OR
PHILO T. FARNSWORTH

21. 1930
In 1930, the same year that Farnsworth won a patent for his all-electronic
TV, his labs were visited by Vladimir Zworykin of RCA,
who had invented a television that used a cathode ray tube and an
all-electric camera tube.

22. Off to Court
This led to a patent battle that lasted over ten years.
During a patent lawsuit against RCA in 1935, his high school
chemistry teacher, Justin Tolman, reproduced a drawing that
Farnsworth, when he was just 14, had made on the blackboard at the
school.
Farnsworth won the suit. Which resulted in RCA paying Farnsworth
$1M for patent licenses.
***That is why FARNSWORTH is often credited with the invention of
Television

23. Vladimir Zworykin
OR
PHILO T. FARNSWORTH