Working Fluid
The working fluid can be of any composition and the system may be single phase (liquid only or gas only) or dual phase (liquid/gas).
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Famous quotes containing the words working and/or fluid:
“Stay-at-home mothers, . . . their self-esteem constantly assaulted, . . . are ever more fervently concerned that their offspring turn out better so they won’t have to stoop to say “I told you so.” Working mothers, . . . their self-esteem corroded by guilt, . . . are praying their kids turn out functional so they can stop being defensive and apologetic and instead assert “See? I did do it all.””
—Melinda M. Marshall (20th century)
“On and on eternally
Shall your altered fluid run,
Bud and bloom and go to seed;
But your singing days are done;”
—Edna St. Vincent Millay (1892–1950)