Was the MSSTA 2 mission successful?

The Multi-Spectral Solar Telescope Array (MSSTA) is a rocket borne solar observatory designed to address a wide range of scientific questions relating to two aspects of the structure and dynamics of the solar atmosphere: (1) The heating and dynamics of chromospheric and coronal structures including spicules, coronal loops, bright points, and planes; and the role of the fine scale structure of the chromospheric network in the transport of mass and energy between these structures, and (2) The large scale structures of the corona, including the interface of prominences and filaments with material at coronal temperatures, the transition region structure of coronal holes and plumes, and their relationship to the solar wind. In order to address these fundamental scientific problems, the observational objective of the MSSTA is to obtain a set of high resolution spectroheliograms with the following properties: (1) Sufficiently broad spectral coverage and accurate photometry to allow modeling of structures covering the full range of temperatures observed in non-flaring chromosphere/corona, 10(exp 4) K to 10(exp 7) K; (2) Sufficient spectral resolution (lambda / delta lambda approx. 30-100) in each spectroheliogram to allow isolation of the emission from lines excited over a narrow range of temperatures; (3) To address objective (a), spatial resolution sufficient to resolve structures on the sun on a scale of 100-200 km (0.1-0.3 arc seconds); to address objective (b), images of the full disk and inner corona with resolution at least 1.0 arc second, and high sensitivity images of the extended corona (to approx. 3-4 solar radii above the limb) with resolution of approx. 3 arc seconds; for both objectives (c), direct measurements of the coronal magnetic field. (4) To access the role of non-thermal phenomena in the heating and dynamics of the chromosphere/corona interface, high resolution (lambda / delta lambda greater than 1000) spectroheliograms with spatial resolution of 1-3 arc seconds

Woodwind Vibrato from the Eighteenth Century to the Present

RILM abstract: Surveys methods of vibrato production in woodwind performance. Beginning with Jacques Martin-Hotteterre, 18th-c. authors recommended finger vibrato. In the 19th c., Anton Bernhard Furstenau mentioned finger as well as jaw and breath vibrato. Late in the century, Maximillian Schwendler proclaimed that vibrato is initiated in the larynx (throat). The 20th c. has seen the debate continue over whether vibrato is produced by the breathing and blowing apparatus or by the throat, with recent scientific experiments supporting the latter claim

The Rotatoria of the Lake Okoboji Region

This report is based upon a series of collections and studies made during the months of July and August, 1919, at the Iowa Lakeside Laboratory. It is incomplete, since numerous species which will doubtless be found in this locality have been missed by reason of the short time during which collections were made