21st May 2016

Who invented the first practical helicopter and when?

Prof. Henrich Focke, a German inventor, devised the first practical helicopter called the Focke-Wulf Fw 16, which was successfully flown in 1936.  By 1938 it set many world records for altitude, speed and flight duration. It could be flown by a pilot after only one hour of pilot briefing.

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29th March 2016

Fluctuations in the boiling point of water on Mount Everest

The boiling point of water decreases with the reduction of atmospheric pressure. Since the pressure at an altitude of 8,848 m gets highly reduced, the boiling point of water also gets drastically reduced. With every 285 m of elevation, the boiling point decreases by 1 °C. The boiling point of water on Mount Everest (8,848 m) is 71.0°C.

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