IN the course of electron diffraction investigations, it is often necessary to have a more accurate method of measuring voltage than the spark gap affords. Reference films have been used by several ...

THE variation with pressure of the dielectric constant of the alkali halides has been measured, for selected salts, by Mayburg 1 and Jarman 2, whose work is summarized in Table 1. Jarman deduced that ...

A new method developed by bioengineers has disentangled the 'see-saw' balance of protein synthesis and degradation in single cells. The amount of proteins inside cells fluctuate over time and this ...

Atomic clocks have been transformational in science and technology, leading to innovations such as global positioning, advanced communications, and tests of fundamental constant variation.

An 80% variation in nuclear DNA amount at constant chromosome number has been found between families of seed progeny derived from established plants of Poa annua L. taken from a single pasture ...

Part 1 of this article series demonstrates, using real-world process data, that the four fundamental assumptions underlying the classical Shewhart control charts—randomness, independence, constant ...