Abstract: Lateral shearing interferometry is an effective method for directly measuring the depth gradient of aspherical surfaces. To address the low phase reconstruction accuracy resulting from the ...

We suspect there are three kinds of people in the world. People who have access to a Michelson Interferometer and are glad, those who don’t have one and don’t know what one is, and a very small number ...

A state-of-the-art experiment at the US Department of Energy’s (DoE) Fermi National Accelerator Laboratory is one step closer to collecting experimental data. Fermilab has announced that it has ...

The only major difference between the sun and the stars we see at night is that the sun happens to be close to us—which is advantageous, assuming you enjoy being alive. Astronomers enjoy this as well ...

Accurately controlling film thickness and uniformity is extremely important for both throughput and performance in the automotive, aerospace, semiconductor, medical, and research industries. White ...

After Christmas dinner in 2021, our family was glued to the television, watching the nail-biting launch of NASA's US$10 billion (AU$15 billion) James Webb Space Telescope. There had not been such a ...

Ten years ago, astronomers made an epic discovery with the Laser Interferometer Gravitational-Wave Observatory. Cosmology hasn’t been the same since, and it might not stay that way much longer. Out ...

The Korea Research Institute of Standards and Science has successfully developed a length measurement system that achieves a level of precision approaching the theoretical limit allowed by quantum ...