Mohandas Karamchand Gandhi was born on 2nd October 1869 A.D. in Porbandar of Gujarat (1869-1948). Just after passing Barristership from London in 1883 A.D., he had to rush to South Africa to plead a case on behalf of ‘Dada Abdullah and Co.’ in 1897 A.D. At this time, he observed the exploitation … [Read more...]
Information on Raniganj Coalfield
The Raniganj coalfield, located in West Bengal, is situated at a distance of 125 km from Calcutta, the total area being about 1500 sq. km. the mining towns of Raniganj and Asansol are located within this coalfield. The Lower Gondwana rocks have been well preserved in this coalfield, the total … [Read more...]
Brief note on Platinum Metal
Platinum, a very valuable and important metal, falls in the category of strategic metals. This very heavy (special grade 14 to 19) metal does neither burn in fire nor melt in acid, but can take any shape, this steel white metal is so ductile, that it can take the shape of a wire with a diameter of … [Read more...]
History of Diamonds in India
Diamond is unique among gemstones in that it is the hardest substance in the world and its high index of refraction (refractive index 2.417) and dispersion (0.063) gives it brilliance and ‘fire’. Chemically diamond is carbon. It is transparent like water, but splashes of colour – blue, green, … [Read more...]
Classification of Industrial Diamond
Based on physical characteristics, industrial diamonds are classified into three types, viz. Carbondo, Bort and Ballas. They are discussed below: 1. Carbondo: There are hard, tough, black diamonds, and are utilized for dies in wire drawing, for diamond drill-bits used in exploring for ores and oil, … [Read more...]
Hindi Names of Gemstones
English Name of gemstones : Hindi Names of gemstones Ruby: Manikya, Chuni, Padmaragmoni in Hindi. Rose red diamond: Golabi Blue diamond: Nilbazro Cat’s eye: Baidurya-moni Aquamiarine: Paribhadro Zircon: Gomed Jade: Piloo Tourmaline: Gandharvo Pais Laijuri: Lajowar Garnet: … [Read more...]
Pokhraj Gemstone
Pokhraj Gemstone is known as Topaz in English. Pokhraj is a much-valued gemstone, the chemical formula being Al2SiO4(F,OH)2. The esteemed gemstone variety is a wine-yellow Pokhraj, but the blue, pale green and pink varieties are also gemstone. A rose-pink variety is yellow stone changed by heating. … [Read more...]
Uses of Clay in India
Clay is one of the most widespread and earliest minerals substances being used in India. Clays originate from the rocks by physic-chemical decomposition, i.e. weathering. In India, clay is used not only for making brick, but also earthen utensil, household appliances, and images of Gods and … [Read more...]
Buddhism in India
Buddhism in India Gautama Buddha: Gautama Buddha was the founder of Buddhism in India. Born to the republican state of Kapilavastu in the Terai region of Nepal in 563 B.C, Gautama Buddha was a Kshatriya prince and the founder of Buddhism. At 29, he renounced the material world and took lessons … [Read more...]
Achievements of Akbar
Mughal Emperor Akbar, as we know, came to rule a very small Mughal territory. He and his able successors transformed it to a pan-Indian power. A determined imperialist, Mughal Emperor Akbar, believed in constantly striving for expansion to keep ambitious neighbours in check. The expansion of the … [Read more...]
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