Ts’ai Lun An official at the imperial court of China, Ts’ai Lun is credited with developing a paper - making process in about 105 C.E. that led to the mass production of paper.
त्याच्या शोधांमुळे, मानवांच्या वापरासाठी मोठ्या प्रमाणावर वीज उपलब्ध झाली.