Why are there two numbers to the grit size? Both of those the ANSI grit standard within the US plus the FEPA grit standard in Europe relate to a median particle size, but use slightly different measurement methods. Blue light comprises high-energy photons; gallium nitride, with its wide bandgap, was https://www.quora.com/profile/Trevor-Flatcher-2/Advantages-and-Challenges-of-Silicon-Carbide-Specialty-Ceramics-Macrocosm-Materials-Company-Overview-Founded-in-2016