Aims The purpose of the study was to compare optical biometry based on partial coherence laser interferometry (PCLI) principle to conventional ultrasound biometry in the accuracy of intraocular lens ...

Manufacturing a precision surface requires a balance between satisfying the optimum quality requirements at the minimum cost. Steve Martinek summarizes the challenges of increasing the precision ...

To capture higher-definition and sharper images of cosmological objects, astronomers sometimes combine the data collected by ...

Modern semiconductor manufacturing technology has advanced rapidly. Because of this, measurement using non-contact displacement and transparent coating thickness has become very critical. Applications ...

For well over 70 years explorers have used seismic survey techniques and seismic wave amplitude interpretation to discover oil and gas. In that time they have relied solely on the measurement of ...

It is useful for expanding the effective aperture of the interferometer, in one axis. The measurement area is around the same size as the beam when a laser interferometer's round measurement beam ...

Information about the magnetic-field distribution is crucial for understanding the processes associated with the generation of hot electrons in the setting of shock-ignition fusion. However, the ...

Flow cytometry is an incredibly useful analytical tool that has revolutionized the way in which single-cell and particle characterization is performed. Despite its effectiveness, flow cytometry ...

Interferometers are widely used in various high spatial resolution imaging techniques to extend the diffraction limit. However, the conventional interferometric methods only work when the photons have ...

Warming up: illustration of the interferometer. (Courtesy: APS / Alan Stonebreaker) An atom interferometer that does not have to be cooled to cryognenic temperatures has been created by physicists in ...

Holding pattern Small clusters of caesium atoms (pink blobs) were held in a vertical optical lattice. A laser then splits each atom into a quantum state in which half of the atom was closer to a ...