On Sunday 29 October 2006 16:25, Randall R Schulz wrote:
Hi,
On Sunday 29 October 2006 07:16, Anders Johansson wrote:
On Sunday 29 October 2006 16:06, Basil Chupin wrote:
The resolution is 1366x768 and the dp is 0.51mm.
dpi stands for "dots per inch", it can't possibly be expressed in millimeters, it must be a quantity. You probably mean one pixel is 0.51 millimeters, making for a dpi value of 25.4/0.51 or roughly 50
The term for that measure is "dot pitch" and it's not the size of the pixels (their light-emitting area) but rather the (slightly larger) distance for a given edge of one pixel to the corresponding edge of the immediately adjacent pixel. While it need not be the same vertically and horizontally, nowadays it usually is.
If you multiply the dot pitch by the number of pixels (in a given dimension) you get the physical size of the imaging area of the display.
Leaving revisionism aside for a second, in the previous mail the abbreviation DPI was used by Basil, not DP, with the same values in millimeters. Also, "dot pitch" is hardly a well defined term (normally 'pixel pitch' is used, as indeed it is in that pdf file), and whenever an abbreviation is used for the first time that is not in common usage, it is common practice to explain it In this case though, I suspect it's second-guessing and backformations