Bran
Bran, the edible broken seed coat, or protective outer layer, of wheat, rye, or other cereal grain, separated…
Grinding
Sandpapers Sandpapers (coated abrasive) are the next most significant abrasive product. They…
Electrical discharge
Animal communication Animal communication, process by which one animal provides information that other animals…
Types of electromagnetic-radiation sources
Broadband-light sources Although flames and discharges provide a convenient method of excitation,…
Emission spectroscopy
Spectroscopy also provides a precise analytical method for finding the constituents in material having unknown chemical composition.…
Stone Age
Stone Age, prehistoric cultural stage, or level of human development characterized by the creation and use…
Silver
Silver (Ag), chemical element, a white lustrous metal valued for its decorative beauty and electrical conductivity.…
Metallurgy
Metallurgy, art and science of extracting metals from their ores and modifying the metals…
