Visitors check out a display at the laser exhibition inaugurated by Rajmani Prasad Singh, former chairman, Bihar School Examination Board, at Srikrishna Science Centre in Patna on Friday. The two-month exhibition, after covering nine cities, reached Patna this month. The aim of the exhibition is to make the public and students aware of the journey of laser in the past 50 years and its application. It also gives information about India’s contribution to laser technology. An interactive laser show has been organised for the visitors. Text by Roshan Kumar, picture by Ranjeet Kumar Dey