Why are there TWO high tides per day?

From the creator

Visit http://brilliant.org/DrBecky/ to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription. We all learn that the tides are caused by the Moon pulling on the Earth's oceans. So how come there's two high tides per day but we only have one Moon? 00:00 - Introduction 00:35 - One Moon, Two High Tides? 00:54 - Is it the Sun? 01:07 - Spring Tides 01:16 - Neap Tides 01:42 - The Earth-Moon Barycentre (centre of mass) 02:45 - Planetary wobbles 03:09 - Detecting exoplanets with star wobbles 03:20 - Wobbles create centrifugal force 04:29 - A lunar day of 24h50m 04:56 - Brilliant 06:06 - Bloopers --- 📚 My new book, "A Brief History of Black Holes", out NOW in hardback, e-book and audiobook (which I narrated myself!): http://hyperurl.co/DrBecky 📚 Note, USA & Canada hardback out 1st November 2022 --- 👕 My new merch is available here (with worldwide shipping!): https://dr-becky.teemill.com/ --- 🎧 Royal Astronomical Society Podcast that I co-host: podfollow.com/supermassive --- 🔔 Don't forget to subscribe and click the little bell icon to be notified when I post a new video! --- 👩🏽‍💻 I'm Dr. Becky Smethurst, an astrophysicist at the University of Oxford (Christ Church). I love making videos about science with an unnatural level of enthusiasm. I like to focus on how we know things, not just what we know. And especially, the things we still don't know. If you've ever wondered about something in space and couldn't find an

Published 2022-07-07 · Watch on YouTube ↗
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