Why are televisions or monitors rectangular or square?
Answer:
It's a logical, efficient way to display data. Also, analog TV systems used horizontal scan lines to build the image. Stacked scan lines of equal length naturally build a rectangular image. It's convenient to have scan lines of equal length because each line will have an identical scan time, making synchronization a lot easier on primitive analog systems. A round screen, for instance, would require each line to have a different scan time which would have to be incremented and de-incremented depending on the line's position on the screen. This is technically difficult to do without digital circuitry. The TV 4 to 3 aspect ration was chosen because it matched the standard aspect ratio for motion pictures at the time.
Because your field of vision is horizontal.
Perhaps because most photos and paintings are? I.e. either we've become conditioned that rectangular images are somehow preferable over circular/triangular/whatever shapes, or for some other reason the majority of people find rectangular images more pleasing or easier on the eye?
Just a guess, nothing to back this up.
CRT (Cathode Ray Tube) televisions were the only form of television until the late 1970's. In fact, television sets from the 40's and 50's were displayed round images on the set.
However, it seemed that most people preferred having a rectangular set than a round one, so manufacturers started changing their CRTS so they picture would be more rectangular than round.
If you take a look at some old sets from the 60's and 70's, you'll see rounded corners that recede back from the center, like a bulb. Technology has improved this bulb, making it more flat.
And that is where we stand with television sets now.
TV pictures were originally transmitted providing a picture with a 4:3 aspect ratio. This standard was naturally adopted for early computer monitors, particularly for PCs. Probably driven by marketing in persuading consumers to update their TVs, widescreen formats were introduced. PCs have followed this trend. I must admit that these are better for watching movies made in widescreen format.
With the introduction of LCD PC monitors, some screens have become squarer with a 5:4 aspect ratio. Personally, I prefer this format on 19 inch monitors, as more lines on text/web pages can be seen, compared with the more expensive 19 inch widescreen varieties.
The original cathode ray tubes from which televisions were developed were circular.
Because most of us have two side-by-side eyes we don't see the world as a circle. The "porthole view" is un-natural. Your actual field of view is a very elongated elipse like shape.
Therefore, the most natural shape for an image is one that's wider than it is high.
Have a look at paintings and photographs. With a few specialist exeptions such as portraits and architecture, the most pleasing are "wide aspect".
Cinemascope films were very wide to give an impression of depth to the cinema visitor.
Early televisions had a mask over the screen face to provide a square picture. Over many decades this evolved to the now standard 16:9 aspect ratio.
Hope this helps.
what do you want?a circle or a triangle.
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