Silver Halide Crystals

Famous quotes containing the words silver and/or crystals:

    ‘A Shape all light, which with one hand did fling
    Dew on the earth, as if she were the dawn,
    And the invisible rain did ever sing

    ‘A silver music on the mossy lawn;
    Percy Bysshe Shelley (1792–1822)

    It is clear that everybody interested in science must be interested in world 3 objects. A physical scientist, to start with, may be interested mainly in world 1 objects—say crystals and X-rays. But very soon he must realize how much depends on our interpretation of the facts, that is, on our theories, and so on world 3 objects. Similarly, a historian of science, or a philosopher interested in science must be largely a student of world 3 objects.
    Karl Popper (1902–1994)