THE WEDGE-PHOTOMETER

Flux calibration of the Herschel -SPIRE photometer

We describe the procedure used to flux calibrate the three-band submillimetre photometer in the Spectral and Photometric Imaging Receiver instrument on the Herschel Space Observatory. This includes the equations describing the calibration scheme, a justification for using Neptune as the primary calibration source, a description of the observations and data processing procedures used to derive f...

Serum Calcium Using the Eel Flame Photometer

Flame photometry has many applications, and in the clinical field its use in the estimation of serum sodium and potassium is now well established. Difficulties have been encountered in the estimation of serum calcium by flame photometry, since the emission spectrum of calcium is relatively weak and is subject to interference by the presence of other ions, e.g., sodium. Although many methods hav...

PhotoMeter: Easy-to-use MonoGraphoMetrics

MonoGraphoMetrics is the science of computing 3D measures from a single image. Several recent research activities have produced theoretical principles and practical tools for extracting 3D measures from uncalibrated photographs. These tools require that the user identifies configurations of edges, which are used to establish constraints or to identify planes in the scene. The process involved i...

A lithium internal-standard flame photometer.

The Diaphanous Wedge

Complete solutions for the diaphanous wedge, by which is meant a wedge with identical wavenumbers inside and outside the wedge, are presented. The results are obtained from an integral equation for the fields on the wedge, which is solved by the Mellin and KantorovichLebedev transforms in the static and dynamic cases, respectively. Pertinent formulations of Gegenbauer’s addition theorems play a...