Video narration
Klaser rol nomborer talikay nirdishto byobodhane eki hauser chinho fire ele, tumi ki bujhte parbe talikar bhetore kono niyom ache? Moulogulokeo emonvabe sajano dorkar chhilo, shudhu nam noy, tader dhormer mil khuje pete. Prothome, mouloguloke parmanobik bhorer krome rakhle dekha gelo, kichu dhormo nirdishto byobodhane abar fire ase. Ei punorabrittiei chhilo asal sutro. Mendeleev ei dhara dhore 1869 saler kachakachi saroni toiri koren. Kothao porichito moul na thakleo tini faka jayga rakhen ebong vobishoter mouler dhormo onuman koren. Pore sei onumangulor songe notun abiskrito mouler milo pawa jay. Lothar Meyer-o swadhinbhabe mouler dhormer eki porjaykromik punorabritti dekhiye dharonatike somorthon koren. Tobe itihaser sei saronite kramer bhitti chhilo parmanobik bhor; adhunik saronite mul bhitti parmanobik shongkha. Karon parmanobik shongkha barar songe ilektron binyasher dhara punorabritto hoy. Tai mouler dhormo elomelo noy, nirdishto byobodhane fire ase. Etai porjay sutro: parmanobik shongkhar songe mouler dhormo porjaykrome poribortito hoy.