Speed of Sound | Mechanical waves and sound | Physics | Khan Academy
Published January 4, 2014
Views 451K | Likes 2.71K | Comments 95
Based on an estimated $0.7–$2 CPM, this video's 451K views translate to an estimated $316 – $903 in lifetime ad revenue.
Revenue estimate
Based on an estimated $0.7–$2CPM (revenue per 1,000 views) — a rough public estimate, not actual creator earnings, which depend on ad rates, audience geography, and monetization settings YouTube doesn't expose publicly.
Total (all-time)$316 – $903