Science
- Hectopascal (hPa), a unit of pressure equivalent to about 1/1000 of 1 atmosphere
- Hypothalamic-pituitary-adrenal axis in physiology, regulation of hormone levels and maintaining homeostasis
- Human physical appearance, in anthropology
- Human platelet antigens, in clinical medicine, blood transfusion, alloantigens
- Heteropoly acid, often used as an acidic catalyst
Read more about this topic: HPA
Famous quotes containing the word science:
“Science, unguided by a higher abstract principle, freely hands over its secrets to a vastly developed and commercially inspired technology, and the latter, even less restrained by a supreme culture saving principle, with the means of science creates all the instruments of power demanded from it by the organization of Might.”
—Johan Huizinga (18721945)
“Our science has become terrible, our research dangerous, our findings deadly. We physicists have to make peace with reality. Reality is not as strong as we are. We will ruin reality.”
—Friedrich Dürrenmatt (19211990)
“When science is learned in love, and its powers are wielded by love, they will appear the supplements and continuations of the material creation.”
—Ralph Waldo Emerson (18031882)