Science and Technology
- para-Chloroamphetamine or 4-Chloroamphetamine
- Principal component analysis, a statistical procedure
- Printed Circuit Assembly or Printed circuit board
- Protocatechuic acid, a polyphenol antioxidant
Read more about this topic: PCA
Famous quotes containing the words science and/or technology:
“The universe is the externisation of the soul. Wherever the life is, that bursts into appearance around it. Our science is sensual, and therefore superficial. The earth, and the heavenly bodies, physics, and chemistry, we sensually treat, as if they were self-existent; but these are the retinue of that Being we have.”
—Ralph Waldo Emerson (1803–1882)
“If we had a reliable way to label our toys good and bad, it would be easy to regulate technology wisely. But we can rarely see far enough ahead to know which road leads to damnation. Whoever concerns himself with big technology, either to push it forward or to stop it, is gambling in human lives.”
—Freeman Dyson (b. 1923)