Aspect Ratio Calculator Question and some monitor question

[Anas Dweik]

Hi guys, i have an Exam Tomorrow. so i have some questions i cant understand :

  

why  the width  x pixel aspect ratio?? not the Hight ?

and where did the 4 :3 comes from?> what is the calculation here?

 

seconded questions  : 

i cant understand the 16:9 

and how 1080p can be in very big screens ? 

the monitor picture shows that 4k = bigger screen than 1080 p , but there is very big screens with 1080p ?

does size = higher resolution ?>

or just the pixel shape changes??

if the pixel shape change , how it saves the picture quality ?

 

third question :

what are these 0.9, 1.2 , 1.0, 1.33 means and where they come from ?

 

 

[tikker]

1 hour ago, Anas Dweik said:

seconded questions  : 

i cant understand the 16:9 

and how 1080p can be in very big screens ? 

the monitor picture shows that 4k = bigger screen than 1080 p , but there is very big screens with 1080p ?

does size = higher resolution ?>

or just the pixel shape changes??

if the pixel shape change , how it saves the picture quality ?

What we call resolution is nothing more than the number of pixels along each axis. You can make a 10 cm 2160p screen or a 10 m 480p screen if you want. A bigger screen at the same resolution will need bigger physical pixels. A bigger screen at the same physical pixel size will have a higher resolution. That figure just illustrates the relative difference in resolution. If you take a 4096x2160 screen and display a 1280x720 picture on it, it will have the size of the gray rectangle.

 

[Helpful Tech Witch]

The resolution is just how tall it is. If it's 1080 pixels tall, then it's 1080p.

The aspect ratio is the ratio of pixels from top:side. So 1080p 16:9, you divide 1080 by 9, then multiply by 16, that's 1920. So 16:9 1080p is 1920x1080.

 

 

Pixels are not a set size. They can be giant, or tiny.