QUELLE EST LA CAUSE DES MARÉES ?

What causes tides? Why does sea level change periodically, and why does the water advance and retreat along beaches, in harbors, and inlets? Scientists have long sought to understand the causes of this phenomenon. The French mathematician Pierre-Simon Laplace even described it as the "most perplexing problem in all of celestial mechanics." In the first part of this video, we will try to explain his model in the simplest way possible. (Incidentally, we will also see why the other models that are too often found in the media are unsatisfactory.) In the second part of the video, we will briefly examine which parameters influence the periodicity of the tides and how. Contents: 0:00 Introduction 1:04 The Force of Gravity 1:54 Tidal Forces 5:25 How Tidal Forces Create Two Tides at Opposite Coasts of the Earth 6:50 The Periodicity of Tides - Semi-diurnal, Diurnal, or Mixed Tides 8:10 The Sun's Effect - Spring and Neap Tides 9:54 Effect of Orbital Ellipticity ————————————————————————————————————————————— ➤ USEFUL LINKS —————————————————————————————————————————————— 🔸To learn more, visit the website: https://classroom.bright-blue.ch/ 🔸To subscribe to the channel:    / @brightblue   🔸To support this work: https://utip.io/brightblue/ 🔸Find us on Instagram:   / bright.blue.classroom   ————————————————————————————————————————————— ➤ OTHER VIDEOS YOU MIGHT BE INTERESTED IN ——————————————————————————————————————————————— 🔸The Moon's Movement    • LE MOUVEMENT DE LA LUNE   #tides #astronomy #geology