Abstract: "The design, simplified techniques of construction, and uses of an electromagnetically controlled quartz fiber microbalances are described. The balance is capable of weighing directly an unbalanced load as large as 1.2 milligrams, carrying a counter-balanced load of 100 to 150 milligrams, and giving a sensitivity of 0.1 microgram per 6 minutes of arc. The one-piece all-quartz balance unit fits into a 25 millimeter diameter tube 12 centimeters long. The balance may be used under wide conditions of temperature, pressure, and reagents in completely closed systems. The balance is controlled by an external variable electromagnetic field."
No takes yet. Share an insight, caveat, or question.
Edwards et al. (1951) studied this question.