Exploring the Physics of Television: Light, Radio, and Sound Waves Explained

In summary, televisions use electromagnetic waves to send pictures and sounds from the TV to the viewer. The speed of light is faster than the speed of sound, so the picture and sound arrive at sync.
  • #1
physics246
7
0
How does physics play a role in televisions with respect to light waves, radio waves, and sound waves. Also, if the speed of light is faster than the speed of sound, why does the picture and sound arrive at sync in a television. I just need to know a little bit about the basis of a television, not too much.

Thank you
 
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  • #2
If the sound as you hear it from the television had actually been transported in the shape of a sound wave from the sender, then a lot of eardums on the way would have exploded.

The information necessary to construct the sound inside your television set is carried by electro-magnetic waves just as the information necessary to construct the image on your television set.

That is, actual image and sound production happens within your television set, on basis of the information carried to it as a sequence of electric signals in the cable; that sequence again having been started at your antenna on receiving the incoming EM wave.
 
  • #3
Also, if the speed of light is faster than the speed of sound, why does the picture and sound arrive at sync in a television.
Speed of sound is roughly 1000 ft/sec., so if you are 10 feet away from the screen, it arrives in about .01 sec - you can't tell the difference.
 
  • #4
1. Is it possible to convert sound waves (longitudinal) into electromagnetic waves (transverse)
2. I know that the picture travels as an electromagnetic wave to get from the station to the T.V., but when it gets from your monitor to your eyes, how does it travel.
 
  • #5
1. Yes. That coversion process is happening when the journalist speaks into his microphone. The sound waves hitting the microphone triggers the apparatus to deliver its signals onwards.

2. As waves in the spectrum of visible light.
 

1. How accurately do television shows portray physics?

The accuracy of physics in television shows varies depending on the specific show and its target audience. Some shows may take creative liberties with physics for the sake of entertainment, while others may strive for more accuracy. It is important to remember that television shows are primarily for entertainment purposes and may not always be scientifically accurate.

2. Can television shows accurately depict complex physics concepts?

While some television shows may attempt to accurately depict complex physics concepts, it can be challenging to do so in a way that is easily understandable for the general audience. Oftentimes, these concepts may be simplified or altered for the sake of storytelling. It is important to approach these depictions with a critical eye and not take them as absolute truth.

3. Are there any television shows that accurately portray physics?

There are some television shows that strive for accuracy in their depiction of physics. These may include science documentaries or educational shows. However, even in these cases, it is important to remember that the content may still be simplified or altered for entertainment purposes.

4. How can television shows effectively use physics in their storytelling?

Television shows can use physics in their storytelling by incorporating scientific principles to enhance the plot and add a sense of realism to the fictional world. This can also be a way to introduce complex concepts to a wider audience in a more relatable and accessible way.

5. Can watching television shows about physics help improve our understanding of the subject?

While watching television shows about physics may spark interest and curiosity in the subject, it should not be a replacement for traditional learning methods such as textbooks and lectures. These shows may provide a basic understanding of certain concepts, but it is important to supplement with more in-depth and accurate sources for a better understanding of physics.

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