Pixels on Laptop screens usually are square, but pixels Employed in digital video frequently have non-square facet ratios, for example Individuals Utilized in the PAL and NTSC variants with the CCIR 601 electronic video conventional, along with the corresponding anamorphic widescreen formats. This bordering margin is called a blanking interval https://a-course-in-miracles.org/a-course-in-miracles/