Mechanický paradox , naklonená rovina , kotúľanie hore kopcom | Fyzika | Pokusy pre deti na doma

New channel FMFI UK: title sample judged 'pick' (Strong core of full lectures/courses (quantum mechanics, linear algebra, physics talks) but mixed with ceremonies, event); 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.