What REALLY are sine and cosine?

Why is a Frigate a Frigate (and not a Destroyer or a Corvette)

Take Off Feb 3rd The ocean from a different perspective

Tides , How the moon raises ocean water - OTMS-2

Correct analysis of tidal forces

Ocean Tides Making Sense - Differential Gravitational Attraction; the basis of the ocean tides

Newton's Law of Universal Gravitation in a spreadsheet (Gravitational Force Formula)

Ocean Tides Making Sense - Introduction to the series

Backyard Planetarium (English subtitles)

Ocean Tides - My Short Explanation ; how tides work (English subtitles)

Tides Explained - Why does the water go up? (with subtitles)