Today, we see that India is progressing well in the field of science. But we have to realize that India had made advanced progress in the field of science and technology in the old age as well. Though the government provides aids these days, in various forms, earlier this aid was not easily available. Yet, many eminent scholars had put in relentless efforts and had come up with wonderful inventions benefitting the human race in the long term. Some like Raman, Bose, Saha, Bhabha and Bhatnagar were felicitated and acknowledged. We have to keep in mind that behind every successful person there are a dozen of people who never get any recognition. They keep on working without expecting any credit. They prefer to remain in dark. They work to satisfy their own minds. They work for the sake of work. The advanced country that India has become today stands erect on the foundation of such unseen and unheard people’s efforts. They do not receive encouragement or praises. But they go on and on. They study science and spend their lives in spreading the importance of science. Till death they remain ‘nobody’ and die as ‘nobody.’ They leave behind a strong lineage for common people to come ahead and take the lead. This book is an attempt to felicitate these great personalities albeit a bit late.