Television

A brief about inventors of Televison , mechanical and electronics television,CRT TVs, today's TVs,future and impact of TELEVISION.

1. TELEVISION

2. INTRODUCTION Few inventions have had as much effect on society as television It has brought different culture , views, language, experiences throughout the world on a single stage

3. Inventors Five men became the most popular and prestigious inventors of what we know today as television, giving the history of TV a rich beginning Paul Nipkow John Baird Charles Jenkins Vladimir Zworykin Philo Farnsworth They each contributed significantly to the development of television technology

4. Inventors and Their Contributions Paul Nipkow proposed and patented the world's first mechanical television system in 1884. Paul Nipkow devised the notion of dissecting the image and transmitting it sequentially. Charles Francis Jenkins Jenkins introduced prismatic rings that would replace the shutter on a film projector .

5. Vladimir Zworykin Zworykin applied for a patent for the iconoscope, which would scan pictures to produce images. He later developed a new tube called the kinescope, which is the basis of modern day televisions . John Logie Baird Baird was able to transmit simple face shapes using a mechanical television.

6. Philo Farnsworth Farnsworth was a specialist in cathode-ray tubes and their use in televisions. Farnsworth's first application for a patent was for an electronic television system, which included an image dissector tube used to scan images for transmission

7. Mechanical vs. Electronic I nventors attempted to either build a mechanical television system based on the technology of Paul Nipkow's rotating disks; or an electronic television system using a cathode ray tube. Electronic television systems worked better and eventually replaced mechanical systems.

8. Mechanical vs. Electronic Mechanical television based on Nipkow Disk Cathode Ray tube ( NIMO )

9. CRT TELEVISIONS CRT is the technology used in traditional computer monitors and televisions. It was most widely used Tv set,the first CRT tv was manufactured in 1934 and at present it is still used in many countries. They are bulky and need more power as compared to LCDs and LEDs based tv sets.

10. CRT tvs are based on cathode ray tube.

11. Today’s TV’s LCD TVs Liquid-crystal-display televisions (LCD TV) are television sets that use LCD display technology to produce images. LCD televisions are thinner and lighter than cathode ray tube (CRTs) of similar display size, and are available in much larger sizes.

12. LED TVs An LED display is a flat panel display, which uses an array of  light emitting diodes as  pixels for a video display . It is subset of LCD.

13. HD TELEVISION High-definition television (HDTV) provides a resolution that is substantially higher than that of  standard definition television.

14. The Future of Television Web-Driven: Watch and record live TV over the Internet Smart Television Narrow down to 3 channels Will tv diminish?

15. Impact Television has has some positive effects with regards to education, entertainment and providing current world events There have been also some negative effects that television has brought. This is especially evident in the social and health aspects.

16. Positive Effect Of Television Powerful and effective learning tool Give knowledge about science, technology, history, geography etc Helps Individuals suffering from Social isolations Raises important issue of our siciety

17. Convey Information across the globe used as platform to find new talents Good medium of communication. Potential to unite communities. Share of cultural experience

18. Negative Effect Of Television Loss of concentration and addiction R educes metabolic rate, risk of heart attack gets more Obesity , affects eye power

19. Spreading false information Adult less sensitive to violence and commit it easily have learning difficulties Youths getting attracted to Alcohol, drugs and cigarettes

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