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 ...

In the first part of this series on the highs and lows of resistance measurements, I discussed the basic principles for making two- and 4-wire resistance measurements for measuring resistances of less ...

The complexities of nanoscale surface measurement are anything but nano-sized. With the advancement of nanotechnology, nanoscale surface measurement is an integral part of the development of this ever ...

As countries around the world strive to reduce their carbon footprints and seek sustainable energy resources, the solar energy industry has experienced significant growth. Among the diverse process ...

Many types of equipment use ball bearings to minimize friction in rotating parts, including automobiles, bicycles, electric appliances, and industrial machinery. Ball bearings are ground to ensure a ...

Don�t heap all the blame for a wrong measurement on the DMM. There can be several less obvious sources of the errors. Testing assemblies and components usually includes checking the continuity of ...

While ac internal resistance (ACIR) measurements are quite common and somewhat standardized when measuring lithium-ion cells, dc internal resistance (DCIR) measurements are nonstandard and generally ...

Insulation failure is the root cause of many electrical conductors and equipment failures. When insulation fails, not only can equipment be damaged, but fire and shock can also result. Ideally, when ...

In the second part of this series on the highs and lows of resistance measurements, I illustrated the differences between two-wire and four-wire resistance measurements on an actual low ohmic sample ...