Observations Of Black Holes - Edward Witten - Public Talks on Frontiers of Physics No.1 - 991129

New channel PSI - انجمن فیزیک ایران: title sample judged 'pick' (Mostly genuine physics lectures and colloquia, but monthly 'physics news' segments and roundtable/panel discussions are ); passed a second screen for sellers/exam-prep/re-uploads; 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.

A 118-minute video from PSI - انجمن فیزیک ایران: “Observations Of Black Holes - Edward Witten - Public Talks on Frontiers of Physics No.1 - 991129”.

Video by PSI - انجمن فیزیک ایران, played through YouTube's embedded player.