Youtube
Prof. Mak Seyuen
https://www.youtube.com/user/makseyuen2
ScienceOnline
https://www.youtube.com/profile?user=ScienceOnline&view=videos
MIT Professor Walter Lewin
http://www.youtube.com/user/barrick007#g/u
Minute Physics
Prof. Mak Seyuen
https://www.youtube.com/user/makseyuen2
ScienceOnline
https://www.youtube.com/profile?user=ScienceOnline&view=videos
MIT Professor Walter Lewin
http://www.youtube.com/user/barrick007#g/u
Minute Physics