Natural Science
- Processing medium, in industrial engineering, a material that plays a role in manufacturing processes
- Excitable medium, a nonlinear dynamic system which has the capacity to propagate a wave
- Gain medium, a quantum system that allows amplification of power (gain) of waves passing through (usually by stimulated emission)
- Growth medium (or culture medium), in biotechnology, an object in which microorganisms or cells experience growth
- Interplanetary medium, in astronomy, material which fills the solar system
- Interstellar medium, in astronomy, the matter and energy content that exists between the stars within a galaxy
- Porous medium, in engineering and earth sciences, a material that allows fluid to pass through it, such as sand
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Famous quotes containing the words natural and/or science:
“Doubtless, we are as slow to conceive of Paradise as of Heaven, of a perfect natural as of a perfect spiritual world. We see how past ages have loitered and erred. “Is perhaps our generation free from irrationality and error? Have we perhaps reached now the summit of human wisdom, and need no more to look out for mental or physical improvement?” Undoubtedly, we are never so visionary as to be prepared for what the next hour may bring forth.”
—Henry David Thoreau (1817–1862)
“The motive of science was the extension of man, on all sides, into Nature, till his hands should touch the stars, his eyes see through the earth, his ears understand the language of beast and bird, and the sense of the wind; and, through his sympathy, heaven and earth should talk with him. But that is not our science.”
—Ralph Waldo Emerson (1803–1882)