Comets – structure and naming
What are comets? Comets are frozen leftovers from the formation of the solar system composed of dust, rock and ices. The word comet comes from the Latin…
Why British tea planters did not succeed beyond the Darjeeling area?
Though consumption of tea in India has been mentioned in the Ramayana (750-500 BCE) , commercial production of tea did not begin until the arrival of the…
How dew is formed?
What is dew? Condensation of water droplets on the objects at the surface of the earth such as leaves and grasses are called as ‘Dew’. When the…
India in the eighth century
India in the eighth century was marked by the growth of three important political powers in India. These were Gurjara Pratiharas in north India, Palas in eastern…
Vattakirutal – fasting facing north
Tamils who lived 2000 years ago valued good reputation and family honour. They thought that it was better to die than to live in disgrace. The practice…
Ports of ancient India
Some of the important ports of ancient India were : Barygaza — Bharuch; Syrastrene — Saurashtra; Suppara — Soppara; Muziris — Pattanam; Colchi — Korkai; Camera –…
Local winds around the world
Local wind systems influence the weather pattern where ever they blow. Some important local winds are: Mountain and Valley Breezes Land and Sea Breezes Berg Location :…
Green energy
Green energy is energy that can be produced using a method, and from a source, that causes no harm to the natural environment. What’s the difference between…
Stupa – origin and structure
What is a Stupa? Stupa (Sanskrit for heap) is a mound-like or hemispherical burial structure containing relics of Buddhist monks. Examples: Sanchi Stupa in Madhya Pradesh is…
How Moon impacts Earth?
How Moon was formed? In a cataclysmic event some 60-175 million years after the birth of the solar system 4.5 billion years ago, a Mars-sized planet called…