Let X be a set and Ï a Ï-algebra over X. 1  A function Î¼ from Ï to the extended real number line is called a measure if it satisfies the following properties: 2  Non-negativity: For all E in Ï: Î¼(E) â¥ 0. 3  Null empty set: Î¼(â) = 0.
Contact wipe is an action designed into a contact so that the contact motion exceeds the initial electrical contact touch point. Using a flexible contact arm causes the contact surface to wipe against its counterpart as the arm bends slightly.
Wet wipe. Wet wipes (textile), unwrapped. A wet wipe, also known as a wet towel, or a moist towelette, is a small moistened piece of paper or cloth that often comes folded and individually wrapped for convenience. Wet wipes are used for cleaning purposes, like personal hygiene or household cleaning.