Vibration calibration and measurement techniques are critical for ensuring the accuracy and reliability of sensors and instrumentation employed in diverse fields such as civil engineering, seismology, ...

MIT engineers have devised a new, noninvasive way to measure the stiffness of living cells using acoustic waves. Their technique allows them to monitor single cells over several generations and ...

The measurement technique of the aspheric surface is mainly for the surface form and parameters. The surface form is the three-dimensional distribution of the surface in the spatial domain. The ...

Measuring phase noise with a spectrum analyzer. The primary advantage of dedicated phase-noise analyzers. The cross-correlation method. Using a spectrum analyzer is the oldest, most straightforward, ...

Maybe the most common applications for very-low-value resistors (i.e., milliohms (mΩ) and below) are current-controlling circuits, where their low value reduces power losses. For these applications, a ...

Researchers at the University of Illinois, US, have developed an automated optical film-thickness measurement technique that they claim is both inexpensive and non-intrusive. Precise measurements of ...

For semi-crystalline polymers, the crystallinity rate is a key parameter which directly influences mechanical properties, such as mechanical resistance or stiffness, as well as thermal and gas barrier ...

A group of researchers from the California Institute of Technology (Caltech) has unveiled a pioneering method to measure soil moisture in the vadose zone-the shallow region between the earth's surface ...

Learn how economists measure externalities using equilibrium models, cost assessments, and qualitative methods. Gain insight into real-world and theoretical impacts.