Editing Monolayer (section)

=== Formation time ===
The '''monolayer formation time''' or '''monolayer time''' is the length of time required, on average, for a surface to be covered by an adsorbate, such as oxygen sticking to fresh aluminum. If the adsorbate has a unity [[sticking coefficient]], so that every molecule which reaches the surface sticks to it without re-evaporating, then the monolayer time is very roughly:
:<math>t = \frac{3 \times 10^{-4} \, \mathrm{Pa} \cdot \mathrm{s}}{P}</math>
where ''t'' is the time and ''P'' is the pressure. It takes about 1 second for a surface to be covered at a pressure of 300&nbsp;μPa (2×10<sup>−6</sup>&nbsp;Torr).