title: Concept of Image pixels, resolution and magnification of image
body: <p>I am trying to understand the relation between image pixels, their size, resolution and how changing the resolutions of an image results in the same image size but slight amount of blurriness. I referred to <a href="http://www.neocamera.com/article/image_size_resolution" rel="nofollow">this links</a> but some doubts still remain:</p>
  
  <p>1) So, what is the "commonly" accepted definition of "resolution"?</p>
  
  <p>2) How(and Why) does changing the resolution of an image (say, a Desktop wallpaper) result in the same image size but a slight amount of blurriness? In this case, what definition of "resolution", "pixels" and "image size" are we talking about?</p>
  
  <p>Thanks in advance!</p>