Hi guys, Welcome to the Advanced Video Search Engine, and you are watching 20.04.21 금요일에 과학터치 온라인 강연 본 강연. That video is uploaded by NRF한국연구재단 at 2020-04-23T18:57:28-07:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [iDv4ZtCa8oM]