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| Principle of the periscope. The periscope on the left uses mirrors whereas the right uses prisms. a Mirrors b Prisms c Observer's eye |
First of all know what is periscope :
A periscope is an instrument for observation from a concealed position. In its simplest form it consists of a tube with mirrors at each end set parallel to each other at a 45-degree angle. This form of periscope, with the addition of two simple lenses, served for observation purposes in the trenches during World War I.
Source from Wiki.
Main Highlights are:
- A 10-meter long periscope, indigenously developed for a nuclear reactor at the Indira Gandhi Centre for Atomic Research (IGCAR) in Kalpakkam.
- claimed to be the longest in the world, was dedicated to the nation today.
- The Rs. 3.9-crore periscope, manufactured by city-based Visual Education Aids (P) Ltd (VEA) in collaboration with IGCAR and others
- it is handed over to Bharatiya Nabhikiya Vidyut Nigam (Bhavini), Kalpakkam, by IGCAR Director S.C. Chetal
- it take more than two-year time period.
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