My small journey on holy Ganga River in Varanasi city, India.


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Night is vanishing.

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Light pollution has become worldwide. By Dr. Nitish Priyadarshi Glittering stars some 20 km outside Ranchi. Light pollution with fog in Ranchi city.                          Scattering of light on the sky of Ranchi city.                   Over-Illuminated tree. Other example of light pollution. For most human history, the phrase “light pollution” would have made no sense. Imagine walking on Ranchi ( Jharkhand , India ) street on a dark night some 50 years back when it was thin population. People carrying torches and lanterns in the Ranchi  Street were common. Even the rickshaw pullers use to attach small lantern in front or back of rickshaws. Cycles were fit with dynamos. Only few houses were lit by gas during power cut and there were few public gaslights in the street. T he natural night sky light comes from starlight, zodiacal light (sunlight scattering from dust ...
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Ancient rock carvings on granite rocks near Ranchi city.

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Carvings are of Lord Ganesh, Lord Hanuman and Shivling. by  Dr. Nitish Priyadarshi email: nitish.priyadarshi@gmail.com  This site is in (Navratangarh) Doisagarh and is located in Gumla district of Jharkhand and is not much far from the capital city of Ranchi . Carvings are of Lord Ganesh, Lord Hanuman and Shivling. These carvings are estimated to be more than 400 years old. Stone has been used for carving since ancient times for many reasons. Most types of stone are easier to find than metal ores, which have to be mined and smelted. Stone can be dug from the surface and carved with hand tools. Stone is more durable than wood, and carvings in stone last much longer than wooden artifacts. Stone comes in many varieties and artists have abundant choices in color, quality and relative hardness. Carving stone into sculpture is an activity older than civilization itself.
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Fuller’s earth mining in Pakur district in Jharkhand State of India.

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Bentonite may have played a major role in Fuller’s earth formation. By Dr. Nitish Priyadarshi   Fig. Mining of Fuller's earth.  Fig. Fuller's earth.  Fig. Mining area. Fig. Bentonite. Abstract: Pakur   is located in the north east corner of Jharkhand State of India. Major part of the district is characterized by undulating topography covered by basaltic flows of Rajmahal Trap. Fuller’s earth mining is limited up to a shallow depth only and it is done manually. Most of the Fuller’s earth is send to local market of Pakur and neighboring state of West Bengal. Local villagers have the ownership of the mining and the profit is distributed among them. Fuller’s earth is mainly of sedimentary origin. It occurs interstratified with geologically late sands and clays. It is thought that most fuller’s earth originated from volcanic ash. Montmorillonite and attapulgite are the principal constituents, and montmorillonite is characteristic of bentonite. There is further suggestio...
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