To paint a large portion with no leaving lap marks, roll the nearly dry roller in several directions together the dry edge, feathering out the paint while you go. Immediately after completing the entire duration of your wall or ceiling, transfer to another area and paint in excess of the feather

two are the index of refraction of the main and 2nd media, respectively. The index of refraction for almost any medium is a dimensionless continuous equal into the ratio on the pace of light within a vacuum to its velocity in that medium. [21] Yet another instance is incandescent light bulbs,