منابع مشابه
Registration of ‘Zenith’ Black Bean
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متن کاملZenith - Angle Distribution of J
March 197-i ABSTR.ACT The flux of atmospheric muons as a function of momentum and zenith angle is measured for p > 0.3 TeV and 60" < 8 C 87.. Special attention is given the angular distribution above. 1 TeV. In 1967, Bergeson et al. [i] published data from an underground cosmic ray experiment, suggesting that a new process is occurring in nucleon-nudleon interactions at energies of several TeV....
متن کاملImpact of a priori zenith hydrostatic delay errors on GPS estimates of station heights and zenith total delays
[1] Corrections to zenith atmospheric delays (including hydrostatic components) are estimated in geodetic analyses using partial derivatives that relate wet delays to the phase observations. At low-elevation angles, partial derivatives of the hydrostatic and wet delays are sufficiently different as to cause errors in the estimates of station heights and zenith total delays unless accurate surfa...
متن کاملWide-field tracking with zenith-pointing telescopes
Equipped with a suitable optical relay system, telescopes employing low-cost fixed primary mirrors could point and track while delivering high-quality images to a fixed location. Such an optical tracking system would enable liquid-mirror telescopes to access a large area of sky and employ infrared detectors and adaptive optics. Such telescopes could also form the elements of an array in which l...
متن کاملTropospheric Range Error at the Zenith
The atmospheric range error in an electromagnetic signal arriving vertically at the earth is measured by the height integral of the refractivity N through the atmosphere. (N = 10^ (n-1) where n is the index of refraction.) N in the non-ionized atmosphere is the sum of "dry" and "wet" components, which are considered separately. Only the dry part is important at optical wavelengths,and the prese...
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ژورنال
عنوان ژورنال: Nature
سال: 1911
ISSN: 0028-0836,1476-4687
DOI: 10.1038/087010b0