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The search for objective reality with Jim Peebles
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=GY59ewhciwI
Join P. J. E. Peebles as he explores the big questions about the nature of science, and how we are discovering the nature of reality in successive approximations through increasingly rigorous scrutiny. Watch the Q A here: • Q A: The search for objective reality... • Jim's latest book 'The whole truth: a cosmologist's reflections on the search for objective reality' is available now: https://geni.us/JxMH0 • Subscribe for regular science videos: http://bit.ly/RiSubscRibe • Scienists have questioned how reality could agree with physical theories that keep changing. Today, concepts like dark matter and dark energy further complicate and enrich the search for objective reality. • In this talk, Peebles will draw on a lifetime of experience as a leading physicist and using cosmology as an example for this personal reflection. Discover if the concept of objective reality is meaningful. • This livestream was recorded on 13 October 2022. • 0:00 Introduction • 1:16 Constructions in natural science • 5:13 The objective reality of the speed of light • 8:32 Is all of our physics technically wrong? • 13:56 The inevitability of inventions • 16:52 The expanding universe • 23:01 Thermal radiation in the universe • 27:55 Evidence for the evolution of the universe • 46:20 Acoustic oscillations in the early universe • 52:06 Exciting discoveries that haven't been discovered yet • Philip James Edwin Peebles is a Canadian-American physicist and theoretical cosmologist who is currently the Albert Einstein Professor in Science, Emeritus, at Princeton University. He is widely regarded as one of the world's leading theoretical cosmologists in the period since 1970, with major theoretical contributions to primordial nucleosynthesis, dark matter, the cosmic microwave background, and structure formation. • Peebles was awarded half of the Nobel Prize in Physics in 2019 for his theoretical discoveries in physical cosmology. He shared the prize with Michael Mayor and Didier Queloz for their discovery of an exoplanet orbiting a sun-like star. • -- • A very special thank you to our Patreon supporters who help make these videos happen, especially: • Andy Carpenter, William Hudson, Richard Hawkins, Thomas Gønge, Don McLaughlin, Jonathan Sturm, Microslav Jarábek, Michael Rops, Supalak Foong, efkinel lo, Martin Paull, Ben Wynne-Simmons, Ivo Danihelka, Paulina Barren, Kevin Winoto, Jonathan Killin, Taylor Hornby, Rasiel Suarez, Stephan Giersche, William Billy Robillard, Scott Edwardsen, Jeffrey Schweitzer, Frances Dunne, jonas.app, Tim Karr, Adam Leos, Alan Latteri, Matt Townsend, John C. Vesey, Andrew McGhee, Robert Reinecke, Paul Brown, Lasse T Stendan, David Schick, Joe Godenzi, Dave Ostler, Osian Gwyn Williams, David Lindo, Roger Baker, Greg Nagel, Rebecca Pan. • -- • The Ri is on Patreon: / theroyalinstitution • and Twitter: / ri_science • and Facebook: / royalinstitution • and TikTok: / ri_science • Listen to the Ri podcast: https://anchor.fm/ri-science-podcast • Our editorial policy: https://www.rigb.org/editing-ri-talks... • Subscribe for the latest science videos: http://bit.ly/RiNewsletter • Product links on this page may be affiliate links which means it won't cost you any extra but we may earn a small commission if you decide to purchase through the link.
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