Image resolution, Pixel Dimensions, Document Size in Photoshop

1. Document size

1.1. Resolution box

1.1.1. how many pixels will print in every inch of paper from width to height

1.1.1.1. # of pixels will always be identical from width to height

1.2. width and height box

1.2.1. actual width/resolution number = the width of the actual printed picture

1.2.2. Height/resolution number = the height of the actual printed picture

2. Pixel size

2.1. Change in order to fit a certain amount of pixels in a square inch

3. Image Resolution

3.1. NOTHING to do with image on the screen

3.2. how it looks when it prints

4. Pixel Dimension

4.1. in Photoshop

4.1.1. width and height of image in pixels

4.1.1.1. width; left to right

4.1.1.2. height; top to bottom

4.2. size

4.2.1. MB; megabytes or mill of bytes

4.2.2. MP; megapixels

4.3. how many pixels in picture