Liked on YouTube: "Which Way Is Down?"



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"BRAIN CANDY LIVE https://alll.es/2gZg9EU THE VSAUCE CURIOSITY BOX: https://alll.es/2iq5SBV Links to sources and to learn more below! my twitter https://twitter.com/tweetsauce my instagram https://alll.es/2gWJZtz Thanks to Eric Langlay (https://www.youtube.com/user/ericdraven30) for producing, editing, and animating this episode with me. Thanks also to Henry Reich (https://www.youtube.com/user/minutephysics) for his advice and guidance. Universe Sandbox² : https://alll.es/2iqPC3D Mass vs weight: https://alll.es/2gXUwVx Great Veritasium video: https://www.youtube.com/watch?v=_Z0X0yE8Ioc two other great videos: https://www.youtube.com/watch?v=6ccIjRwYO9U and https://www.youtube.com/watch?v=aCqQzrPCcFM baseballs coming together under gravitational attraction can be simulated in Universe Sandbox 2. More math behind it can be found here: https://alll.es/2iqPCk9 Weight to mass (on surface of Earth) convertor: https://alll.es/2gZgbww pencil and Earth falling numbers: https://alll.es/2iqPCAF NASA HD footage: https://alll.es/2gZgck4 Buoyancy: https://alll.es/2iqPCRb Earth’s spin and its effect on ‘down’: https://alll.es/2gZgcAA The measurement of Earth and its gravity: https://alll.es/2iqPDEJ https://alll.es/2gZgcR6 Movement of Earth’s center of mass: https://alll.es/2ir2B5x https://alll.es/2gZgd7C https://alll.es/2iqPEZj you get heavier before you get lighter as you descend into Earth: https://alll.es/2h0iSy1 vertical deflection: https://alll.es/2iqPFMR practical uses of measuring gravity: https://alll.es/2gXHQO8 geoid: https://alll.es/2iozgs4 https://alll.es/2gZFte0 https://www.youtube.com/watch?v=jOQl8DRzQks Interactive Earth geoid: https://alll.es/2iqPG3n your weight when moon is overhead: https://alll.es/2gZgesc Hammer and feather drop on moon: https://alll.es/2iqPGjT Why things fall at the same rate: https://alll.es/2gZgeII Wolfram Alpha cone geodesic tool: https://alll.es/2iqPGAp General Relativity: simple animation showing geodesic on cone and how it causes motion DOWN in space: https://www.youtube.com/watch?v=DdC0QN6f3G4 GREAT pbs spacetime video (watch the whole channel): https://www.youtube.com/watch?v=AwhKZ3fd9JA https://alll.es/2gWc1FI https://alll.es/2irDRd9 https://alll.es/2gYLcAD https://alll.es/2ipyn2E time and gravity: https://www.youtube.com/watch?v=jlTVIMOix3I https://youtu.be/1ENkP0h8nAg https://youtu.be/gcvq1DAM-DE https://alll.es/2gYdr2j https://alll.es/2ir04rF tests of general relativity: https://alll.es/2h0Dypf RECOMENDED BOOKS: great introductory texts: “Relativity Visualized” by Lewis Carroll Epstein https://alll.es/2ipsSkF There’s also this PDF that takes Epstein’s diagrams into more detail: https://alll.es/2h08u9t “Relativity Simply Explained” by Martin Gardener https://alll.es/2ipsSkF great intro to the math of general relativity: “A Most Incomprehensible Thing: Notes Towards a Very Gentle Introduction to the Mathematics of Relativity” by Peter Collier https://alll.es/2iqPJw5 Requires some background in relevant math topics (see above) but very very good: “Spacetime And Geometry: An Introduction To General Relativity” by Sean Carrol https://alll.es/2gZggAk"

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