Cutlery
Cutlery, cutting implements, such as knives, razors, and scissors, used for industrial, commercial, and domestic…
Specific gravity
a substance to that of a standard substance. hydrometerHydrometer used to measure…
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.…
Silver
Silver (Ag), chemical element, a white lustrous metal valued for its decorative beauty and electrical conductivity.…
Gold
Gold (Au), chemical element, a dense lustrous yellow precious metal of Group 11 (Ib), Period 6,…
Metallurgy
Metallurgy, art and science of extracting metals from their ores and modifying the metals…




