Space-time transformation sky brightness at a horizontal position of the sun

2015 ◽  
Author(s):  
Viktor P. Galileiskii ◽  
Alexey I. Elizarov ◽  
Dmitrii V. Kokarev ◽  
Aleksandr M. Morozov
Keyword(s):  
Space Time ◽  
Time Transformation ◽  
The Sun ◽  
Horizontal Position ◽  
Sky Brightness

scholarly journals Interferometric Observation of the F-Corona Radial Velocities Field Between 3 and 7 R⊚

1985 ◽  
Vol 85 ◽  
pp. 77-80
Author(s):  
P.V. Shcheglov ◽  
L.I. Shestakova ◽  
A.K. Ajmanov
Keyword(s):  
Scattered Light ◽  
Interplanetary Dust ◽  
Radial Velocities ◽  
The Sun ◽  
Continuous Component ◽  
The North ◽  
The Earth ◽  
Fabry Perot ◽  
Interferometric Observation ◽  
Sky Brightness

AbstractDuring the July 31, 1981 solar eclipse, F-corona interferograms near MgI λ 5184 Å were obtained using a Fabry-Perot etalon (FPE) with an FWHM of 0.5 Å (corresponding to 30 km/sec) and an image tube. Radial velocities Vr of the interplanetary dust (i.d.) were measured in different directions.Both prograde and retrograde motions of i.d. in the ecliptic region is discovered. Most of velocity values do not exceed 50 km/sec. A negative velocity component appears after averaging all Vr for all directions. Its average increases to − 20 km/sec toward the Sun. Some ejections are observed. The strongest (+ 130 km/sec) is located at the north ecliptic pole at a distance of 6 to 7 R⊙.From the lack of unshifted Fraunhofer lines in the scattered sky light, we conclude that the sky brightness continuous component is predominant and its source is K-corona scattered light in the Earth’ s atmosphere.

Direct observation of the space-time transformation of a femtosecond laser pulse in fused quartz

JETP Letters ◽  
2009 ◽  
Vol 89 (11) ◽  
pp. 535-539 ◽  
Author(s):  
I. V. Blonskii ◽  
V. N. Kadan ◽  
O. I. Shpotyuk ◽  
I. N. Dmitruk ◽  
I. A. Pavlov
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Femtosecond Laser Pulse ◽  
Direct Observation ◽  
Space Time ◽  
Time Transformation ◽  
Fused Quartz

Summary of Sky Brightness Measurements During Eclipses of the Sun

1971 ◽  
Vol 10 (6) ◽  
pp. 1207 ◽  
Author(s):  
W. E. Sharp ◽  
S. M. Silverman ◽  
J. W. F. Lloyd
Keyword(s):  
The Sun ◽  
Sky Brightness

Calibration method of three-dimensional plane array laser radar based on space-time transformation

2020 ◽  
Vol 59 (28) ◽  
pp. 8595
Author(s):  
Shuo Zhang ◽  
Lipeng Sun ◽  
Yongran Chen ◽  
Yong Bi
Keyword(s):  
Three Dimensional ◽  
Calibration Method ◽  
Space Time ◽  
Laser Radar ◽  
Time Transformation ◽  
Dimensional Plane

scholarly journals Tilt response of pyranometers - studies at Pune

MAUSAM ◽  
2021 ◽  
Vol 48 (3) ◽  
pp. 429-432
Author(s):  
V. V. KANADE ◽  
V.V. ABHYANKAR
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Solar Irradiance ◽  
Solar Energy Conversion ◽  
The Sun ◽  
Horizontal Position ◽  
Radiation Laboratory ◽  
Tilt Response

ABSTRACT. Pyranometers are normally used in a horizontal position to measure the global solar irradiance from the sun and sky. Because of the use of the pyranometers at sloping angles for determining the efficiency of the solar energy conversion installations, the effect of the tilled positions have to be quantified. Central Radiation Laboratory at Pune has made its own device and made measurements of the outputs of different pyranometers at different sloping angles. The results are discussed in the paper.    

The formation of the sky brightness with horizon position of the sun

2015 ◽  
Author(s):  
Viktor P. Galileiskii ◽  
Alexey I. Elizarov ◽  
Dmitrii V. Kokarev ◽  
Aleksandr M. Morozov
Keyword(s):  
The Sun ◽  
Sky Brightness
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