Thomas Alva Edisonte chathiyil ninnum karakayari manushyarasikk uthakunna mahathaya niravadhi kandethalukal nadathiya Nikola Tesla enna mahanaya athbhutha manushyane kurichulla chila arivukalanu ee pusthakathil ulppeduthiyittullath. vichithrangalaya seelangal ulla oru kalathu ettavum dhanikanayirunna Nikola Teslaye palarkkum ariyilla. athinte karanavum Edison aanu. Sradheyanaya ezhuthukaranaya Sajeev Koikkal ezhuthiya ee pusthakam vayanakarku oru puthiya arivayirikkum.