High resolution observations in the radio range from the ground and X-rays from satellites during the past few years have provided new insights into the nature of emission processes and energies of solar eruptions. It is ...

In the present communication we have studied the contribution of cellular adaptation in increasing the photoreceptor increment threshold as a function of background intensity in intact eye and isolated retina. In intact ...

The occurrence of Total Solar Eclipse on October 24, 1995 provided an unique opportunity to conduct some experiments using IR sun photometers in the spectral range 0.75 micrometer to 1.6 micrometer and 205 to 14.5 micrometer ...

For successful observations in any telescope, guiding becomes important. On 2.34 m Telescope at Vainu Bappu Observatory, Kavalur, a remote guiding system is assembled using Intensified CCD camera and a PC based image ...

Intensity fluctuations of shadow bands during total solar eclipse of October 24, 1995 were recorded on magnetic tape using cross - shaped array of sixteen photo detectors at Nim Ka Thana. The plane of the array was placed ...

We present details of procedure on equidensitometry of globular clusters using the Sabattier technique in photography. Equidensitometry of Omega Centauri and 47 Tuc shows that both clusters become more elliptical beyond r ...

We have investigated how the radiation is distributed from the centre to the limb when the atmosphere receives a parallel beam of radiation from infinity. We have considered a purely reflecting surface at the bottom of the ...

We have applied the discrete space theory of radiative with the integral operator technique to calculate the spectral line profiles formed in a spherically symmetric expanding stellar atmospheres. We calculated the source ...