Units
- Ps, picosecond, an SI unit of time equivalent to 10−12 of a second, standard abbreviation ps (uncapitalized)
- PS, the German abbreviation for the word Pferdestärke, meaning horsepower
- Peta second, an SI unit of time equivalent to 1015 seconds
- Picosiemens, an SI unit of electric conductance based on the siemens
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“Even in harmonious families there is this double life: the group life, which is the one we can observe in our neighbour’s household, and, underneath, another—secret and passionate and intense—which is the real life that stamps the faces and gives character to the voices of our friends. Always in his mind each member of these social units is escaping, running away, trying to break the net which circumstances and his own affections have woven about him.”
—Willa Cather (1873–1947)