Презентация по английскому языку на тему "TELEVISION" (9 класс)

• 1 слайд

  modern television technology
  

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  Television is certainly one of the most influential forces of our time.
  
  
  
  
  
  
  Most people spend hours each day watching programming on their TV set, however, many people might wonder how in fact television works
  

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  Have you ever wondered about the technology that makes television possible? 
  There are many parts to this process and many technologies that are involved.
  
  

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  Let's start at the beginning with a quick note about … 
  
  
  your brain
  
  There are two amazing things about your brain that make television possible. 
  

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  Both televisions and computer screens (as well as newspaper and magazine photos) rely on this fusion-of-small-colored-dots capability in the human brain to chop pictures up into thousands of individual elements.
  

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  The second principle is creating of moving images and scenes.
  

• 7 слайд

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  There are many major elements that are required in order for TV to work. They usually include a video source, an audio source, a transmitter, a receiver, a display device, and a sound device
  The fist television Technology was the cathode ray tube or CRT.
  

• 8 слайд

  There are three major ways to receive television broadcasts. They include Broadcast TV, Cable TV and Satellite TV.
  
  

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  Satellite TV uses a different form of transmission. . Satellite signals are usually digital and encoded and compressed. They require special antennas pointing in specific directions to pick up specific satellite signals.
  

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  The latest buzz is digital TV, also known as DTV or HDTV (high-definition TV
  

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  So what's next in television technology?
  3-D television.
  

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  In the 3-D business, there are two major categories of3-D glasses: passive and active.
  
  

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  This method relies on a display coated with a lenticular film. Lenticules are tiny lenses on the base side of a special film.
  

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  Future televisions may include a camera that tracks your position. The television will be able to adjust the image so that you're always in a sweet spot.
  

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