Television

=Television= By: Carla Hespe

=Why Was It Invented?= The Television was invented for human being's entertainment and satisfaction.

=How Is It Still Used Today?= The Television is one of the many sources of entertainment used today.

=Where Was It Invented?= Germany

=When Was It Invented?= In 1884, Paul Gottlieb Nipkow, a 23-year-old university student in Germany, mad the first electrical television. - Wikipedia

=How has It Changed Over Time?=

I will show you a few changes made over time

1.

=Info:= Buying a television can be frustrating if you don’t know what you’re looking for. From tubes to plasma, there are more models on store shelves than covers of magazines. Before exploring analog versus digital, SDTV, HDTV, and EDTV, take a look at the types of televisions in today’s consumer market.

=What= The television set has become ubiquitous in homes, businesses and institutions, particularly as a source of entertainment and news. - Wikipedia

In its early stages of development, television employed a combination of optical, mechanical and electronic technologies to capture, transmit and display a visual image. By the late 1920's, however, those employing only optical and electronic technologies were being explored. All modern television systems rely on the latter, although the knowledge gained from the work on electromechanical systems was crucial in the development of fully electronic television. - Wikipedia

The first images transmitted electrically were sent by early mechanical fax machines developed in the late nineteenth century. The concept of electrically powered transmission of television images in motion was first sketched in 1878 as the telephonoscope, shortly after the invention of the telephone. At the time, it was imagined by early science fiction authors, that someday that light could be transmitted over wires, as sounds were. - Wikipedia

=Who=

-In 1884, Paul Gottlieb Nipkow, a 23-year-old university student in Germany, patented the first electrical television system which employed a scanning disk, a spinning disk with a series of holes spiraling toward the center, for rasterization. The holes were spaced at equal angular intervals such that in a single rotation the disk would allow light to pass through each hole and onto a light-sensitive selenium sensor which produced the electrical pulses. As an image was focused on the rotating disk, each hole captured a horizontal "slice" of the whole image. - Wikipedia -In 1927, Philo Farnsworth made the world's first working television system with electronic scanning of both the pickup and display devices, which he first demonstrated to the press on 1 September 1928. - Wikipedia = = =How Has It Changed Over Time?=

This is a few dates for what happened though the process of televisions.

1st Date
in 1884 Paul Gottlieb Nipkow, a 23-year-old university student in Germany, made the first electrical television. From- Television History - The First 75 Years
 * -1884**

2nd Date
The Television is commercially available since the late 1920's. From- Television History - The First 75 Years
 * -1920**

3rd Date
Mechanical CBS Color TV Broadcasting ends forever. From- Television History - The First 75 Years
 * -Oct 20, 1951**

- 1956
Ampex introduces the first practical videotape system of broadcast quality. - Inventors.about.com

=Webliography=

http://en.wikipedia.org/wiki/Television#History

http://www.tvhistory.tv/History%20of%20TV.htm

http://inventors.about.com/od/tstartinventions/a/Television_Time_4.htm