You searched for: “grade”
Word Entries containing the term: “grade”
phi grade scale, phi scale
In geology, a logarithmic scale in which the diameter value of the Wentworth scale is replaced by the negative logarithm to the base two of the particle diameter (in millimeters), so that conventional statistical methods can be applied to sedimentary data.
Word Entries at Get Words containing the term: “grade”
metallurgical grade silicon
Silicon that is prepared by the heating of high-purity silica in an electric arc furnace at temperatures over 1900 degrees Centigrade using carbon electrodes, producing a material that is at least 99% pure.