The dimensions of the White House are as follows. The length is 168 feet (51.2 meters). The width is 152 feet with the porticoes. Without the porticoes it is 85 feet 6 inches (26.1 meters). The height is 60 ft 4 inches on the north. On the south it is 70 feet. The fence of the White House covers 18 acres.
A mobility shift assay is electrophoretic separation of a proteinâDNA or proteinâRNA mixture on a polyacrylamide or agarose gel for a short period (about 1.5-2 hr for a 15- to 20-cm gel).
Electron mobility. In solid-state physics, the electron mobility characterizes how quickly an electron can move through a metal or semiconductor, when pulled by an electric field. In semiconductors, there is an analogous quantity for holes, called hole mobility. The term carrier mobility refers in general to both electron and hole mobility in semiconductors. Electron and hole mobility are special cases of electrical mobility of charged particles in a fluid under an applied electric field. When an electric field E is applied across a piece of material, the electrons respond by moving with an average velocity called the drift velocity, . Then the electron mobility Î¼ is defined as