What is the difference between dot and pixel?
I've read many explanations, but either they all are too abstruse or they gainsay each other.
A dot refers to ink density, effectively; a pixel refers to image density on a screen.
Well what does "density" mean?
It’s actually pretty simple: LCDs are made up of pixels, and pixels are made up of dots.
joojaa's answer is similar.
No, each pixel is represented by multiple dots*.
But Scott gainsaid all this.
There is absolutely zero correlation between pixels and dots. None.
Then I tried Alan Gilbertson's answer.
A pixel (the word was originally coined, iirc, by IBM and derives from "picture element") is the smallest indivisible unit of information in a digital image. Pixels may be displayed, or they may be printed, but you can't divide pixels into smaller pieces to get more information.
How many channels and bits per channel make up one pixelis the measure of how subtle the information in a pixel may be, but the basic fact is that 1 pixel is the smallest increment of information in an image. If you do video, you know that pixels don't have to be square -- they are non-square in all older video formats. Square or not, a pixel is still the smallest unit of a picture.
The sentence colored in gray addled me. What are "channels" and "bits per channel"?
An inch (okay, so you know this already -- bear with me) is a unit of linear measurement on a surface, which could be a screen or a piece of paper.
A dot is, well, a dot. It can be a dot on a screen, or it can be a dot produced by a printhead. Like pixels, dots are atomic. They're either there, or they're not. How much fine detail a screen can display depends on how close the dots are (what they used to call "dot pitch" in the old CRT days). How small the dots are from an inkjet, a laser printer or an imagesetter determines how much fine detail it can reproduce.
What does "atomic" mean? I feel I need to know some physics to understand this answer!
Rafael's answer is the least abstruse, but it still refers to recondite terms like "the bit depth".