In this episode, M. R. Hari describes the failure he encountered after installing a solar tunnel in a bid to harness solar energy to light up his house. Along with light, the tunnel radiated a lot of heat too into the interior. Later, on consulting Mr Ajithkumar, whose solar tunnel had been the driving inspiration behind this project at Puliyarakonam, he learnt that the tunnel had to be at least 10 feet long. Taking off from this point, M. R. Hari suggests that we talk to experts, and study a subject in the most comprehensive manner, before implementing a new idea.
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