Effect of azimuthal nonuniformity of magnetic field of synchrotron of state special standard of energy-luminance spectral density at 50?250 nm on error of unit reproduction

1985 ◽  
Vol 28 (3) ◽  
pp. 212-215
Author(s):  
V. V. Sanochkin ◽  
Yu. M. Tereshkii
Keyword(s):  
Magnetic Field ◽  
Spectral Density ◽  
Special Standard ◽  
State Special Standard ◽  
Azimuthal Nonuniformity

Comparison of Pneumatic Pressure Tester and State Special Standard of Pressure for Pressure Difference

Metrologia ◽  
1991 ◽  
Vol 28 (1) ◽  
pp. 51-53
Author(s):  
V N Gorobei ◽  
T S Dzagurova ◽  
S M Kesselman ◽  
V N Rusinova ◽  
L A Shildkret
Keyword(s):  
Pressure Difference ◽  
Special Standard ◽  
Pneumatic Pressure ◽  
State Special Standard

scholarly journals Magnetohydrodynamic calculation of the temperature and wind velocity profile of the solar transition region. Preliminary results.

2018 ◽  
Vol 145 ◽  
pp. 03009 ◽  
Author(s):  
Todor M. Mishonov ◽  
Albert M. Varonov ◽  
Nedeltcho I. Zahariev ◽  
Rositsa V. Topchiyska ◽  
Boian V. Lazov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Spectral Density ◽  
Solar Corona ◽  
Temperature Profile ◽  
Transition Region ◽  
Wind Velocity ◽  
Spectral Lines ◽  
Mhd Waves ◽  
Dimensional Approximation ◽  
Height Dependence

The sharp almost step like increase the temperature in the transition region (TR) between chromosphere and solar corona is well-known from decades; for first time we are giving a detailed magnetohydrodynamic (MHD) calculation of the height dependence of the temperature. The width of the transition region is evaluated by maximal value of the logarithmic derivative of the temperature. At fixed heating, only MHD can give such a narrow width and in such sense, even the qualitative agreement with the observational data, gives the final verdict what the heating mechanism of the solar corona is. Static profiles of the temperature and wind velocity are calculated for static frequency dependent spectral density of the incoming MHD waves; no time dependent computer simulations. At fixed spectral density of MHD waves, the MHD calculation predicts height dependence of the non-thermal broadening of spectral lines and its angular dependence. For illustration is used one dimensional approximation of completely ionized hydrogen plasma in weak magnetic field, but it is considered that the width of the TR is weakly dependent with respect of further elaboration. The analyzed MHD calculation is a numerical confirmation of the qualitative concept of self-induced opacity of the plasma with respect to MHD waves. The plasma viscosity strongly increases with the temperature. Heated by MHD waves, plasma increases the wave absorption and this positive feedback leads to further heating. The static temperature profile is a result of a self-consistent calculation of propagation of MHD wave through the static background of wind and temperature profile. The numerical method allows consideration of incoming MHD waves with an arbitrary spectral density. Further elaboration of the method are briefly discussed: influence of second viscosity in the chromospheric part of the TR, influence of the magnetic field on the coronal side of the TR and investigation of such type effects on the width of the TR.

State special standard for the units of length, velocity, and acceleration for seismometry in the frequency range 0.01–20 Hz

1997 ◽  
Vol 40 (6) ◽  
pp. 522-531
Author(s):  
V. F. Abdulin ◽  
E. G. Aleksandrov ◽  
E. P. Krivtsov ◽  
A. E. Sinel'nikov ◽  
A. A. Yankovskii
Keyword(s):  
Special Standard ◽  
Frequency Range ◽  
State Special Standard

State special standard of units of spectral transmission and reflection coefficients and the All-Union Test Circuit for color measurement means

1976 ◽  
Vol 19 (3) ◽  
pp. 354-359
Author(s):  
K. A. Alekseeva ◽  
N. N. Grigorovich ◽  
T. P. Zhikhareva ◽  
N. M. Nikitina ◽  
E. I. Nikonova ◽  
...  
Keyword(s):  
Color Measurement ◽  
Reflection Coefficients ◽  
Measurement Means ◽  
Spectral Transmission ◽  
Special Standard ◽  
State Special Standard ◽  
Transmission And Reflection Coefficients ◽  
Test Circuit ◽  
Transmission And Reflection

National primary special standard of pulse electric and magnetic field intensities units with pulse rise time in the range from 0,1 to 10,0 ns GET 148–2013

2018 ◽  
pp. 9-13
Author(s):  
K. Yu. Sakharov ◽  
◽  
O. V. Mikheev ◽  
V. A. Turkin ◽  
A. V. Sukhov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Rise Time ◽  
Special Standard ◽  
Pulse Rise Time ◽  
Electric And Magnetic Field ◽  
Pulse Electric
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