Here we describe the design and performance of the Spider instrument. Spider is a balloon-borne cosmic microwave background polarization imager that will map part of the sky at 90, 145, and 280 GHz with sub-degree resolution and high sensitivity. Thi...
Jan 27, 2026 · Drum, musical instrument, the sound of which is produced by the vibration of a stretched membrane (it is thus classified as a membranophone within the larger category of percussion …
Automatic drum transcription, a subtask of the more general automatic music transcription, deals with extracting drum instrument note onsets from an audio source. Recently, progress in transcription performance has been made using non-negative matrix...
The Calculus Concept Readiness (CCR) instrument is based on the broad body of mathematics education research that has revealed major understandings, representational abilities, and reasoning abilities students need to construct in precalculus level c...
We present science cases and instrument design considerations for the BIFROST instrument that will open the short-wavelength (Y/J/H-band), high spectral dispersion (up to R=25,000) window for the VLT Interferometer. BIFROST will be part of the Asgard...
The very demanding requirements of the SKA-low instrument call for a challenging antenna design capable of delivering excellence performance in radiation patterns, impedance matching, polarization purity, cost, longevity, etc. This paper is devoted t...
The sitar is the most popular stringed instrument of Hindustani Classical Music, and due to the work of musical ambassadors like Ravi Shankar and the general appeal of Indian Music, has become well …
The sitar is the most popular stringed instrument of Hindustani Classical Music, and due to the work of musical ambassadors like Ravi Shankar and the general appeal of Indian Music, has become well …
An electric sitar is a type of electric string instrument designed to mimic the sound of the sitar, a traditional musical instrument of India. Depending
What is a carillon? A carillon is a musical instrument composed of at least 23 carillon bells, arranged in chromatic sequence, so tuned as to produce concordant harmony when many bells are sounded …
Carillon, musical instrument consisting of at least 23 cast bronze bells in fixed suspension, tuned in chromatic order (i.e., in half steps) and capable of concordant harmony when sounded together.
between parts feature cork seals. Cork grease is used on these seals to ease and lubricate instrument assembly, avoiding damage to the cork and the instrument's
the least count of a measuring instrument is the smallest value in the measured quantity that can be resolved on the instrument's scale. The least count
A localizer type directional aid (LDA) or Instrument Guidance System (IGS) is a type of localizer-based instrument approach to an airport. It is used
MIRC-X is a new beam combination instrument at the CHARA array that enables 6-telescope interferometric imaging on object classes that until now have been out of reach for milliarcsecond-resolution imaging. As part of an instrumentation effort lead b...
At the new neutron source FRM--II in Garching, Germany, the TACO control system, originally developed at the ESRF in Grenoble, France is used for instrument control purposes. TACO provides an object oriented, distributed control system including a...
AzTEC is a mm-wavelength bolometric camera utilizing 144 silicon nitride micromesh detectors. Herein we describe the AzTEC instrument architecture and its use as an astronomical instrument. We report on several performance metrics measured during a...
The horn is a brass instrument that consists of tubing wrapped into a coiled form. The instrument was first developed in England as a hunting horn around the year 1650. The French referred to it as the …
Horn, the orchestral and military brass instrument derived from the trompe (or cor) de chasse, a large circular hunting horn that appeared in France about 1650 and soon began to be used orchestrally.
The bulgari or boulgari (Greek: μπουλγαρί) is a string instrument that originates from Turkey, especially from Anatolia among the Oghuz Turks living in