This technical note explores the sources of error in gravimetric measurements used for aerosol photometer calibration, emphasizing the impact of discrepancies in ...

This technical note discusses the rationale for using two-point calibration and multi-point verification in the calibration of aerosol photometers. It explains the theoretical basis for the linear ...

Since 2008, over 700 high school chemistry teachers received ACS-Hach High School Chemistry Classroom Grants. Teachers can request up to $1,800 for their ideas. Increase your chances for a proposal ...

The Hach DR 2700 Spectrophotometer can be used for more than 130 analytical methods. All of the chemistries and supplies needed for these tests are available from Hach. The spectrophotometer can ...

A high-speed photometer onboard detected light from high-energy sources. Three fine-guidance sensors installed in 1990 made high-precision measurements of the positions of celestial objects.

photometer, and atmospheric sensors — to study Venus's surface and atmosphere. While several Venera probes successfully transmitted data from Venus's surface, Kosmos 482 went off-course soon ...

With UV and Visible Spectrum capabilities, over 250 pre-programmed methods including the most common testing methods used, guided procedures, and integrated quality assurance software, the DR 6000 ...

The Korea AeroSpace Administration (KASA), in charge of the nation's space policy and securing core technologies, on May 27 marked its first anniversary. Launched in May last year in Sacheon, ...

and a multi-channel photometer he designed. The paper describing his survey's findings is published in the journal Acta Astronautica. For years, Stanton has used these instruments to observe more ...

Since retiring, he has dedicated himself to the Search for Extraterrestrial Intelligence (SETI) using the 76.2-cm (30-inch) telescope at the Shay Meadow Observatory in Big Bear, California, and a ...