This is a very clever way of making a simple periscope. Cut the two ends of a cardboard pencil box and attach two plain mirrors at 45-degrees make an improvised periscope. You can sit below the table and view the objects kept on the table with the help of your periscope.
http://www.arvindguptatoys.com/toys/periscope.html This work was supported by IUCAA and Tata Trust. This film was made by Ashok Rupner TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of qu
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