Handbook of Mass Measurement

Frank E. Jones is currently an independent consultant. He received a bachelor's degree in physics from Waynesburg College, Pennsylvania, and a master's degree in physics from the University of Maryland, where he has also pursued doctoral studies in meteorology. He served as a physicist at the National Bureau of Standards (now National Institute of Standards and Technology, NIST) in many areas, including pressure measurements, flow measurements, standardizing for chemical warfare agents, chemical engineering, processing of nuclear materials, nuclear safeguards, evaporation of water, humidity sensing, evapotranspiration, cloud physics, helicopter lift margin, moisture in materials, gas viscosity, air density, density of water, refractivity of air, earthquake research, mass, length, time, volume, and sound.

Randall M. Schoonover was an employee of the National Bureau of Standards (currently National Institute of Standards and Technology) for more than 30 years and was closely associated with mass and density metrology. Since his retirement in 1995 he has continued to work as a consultant and to publish scientific work. He attended many schools and has a diploma for electronics from Devry. During his career he authored and co-authored more than 50 scientific papers. His most notable work was the development, along with his colleague Horace A. Bowman, of the silicon density standard as part of the determination of Avogadro's constant; the silicon density standard is now in use throughout the world. He has several inventions and patents to his credit, among them are the immersed electronic density balance and a unique high-precision load cell mass comparator.