Tweedledum and Tweedledee - Eric Laithwaite's 1974 Christmas Lectures 2/6

Video Description

Taking Lewis Carroll’s twins as his starting point for his second lecture, Professor Eric Laithwaite explores the principles of symmetry in engineering. Watch all the lectures in this series here: https://www.youtube.com/playlist?list=PLbnrZHfNEDZwy6vCeZqHPslSO1re9gd7R Watch our newest Christmas lectures here: https://www.youtube.com/playlist?list=PLbnrZHfNEDZyQJZLPMjwEoOLdkFBLU2m1 This lecture was filmed at the Ri on Monday 23rd December 1974. -- This year marks 200 years of the Royal Institution Christmas Lectures — a world famous series showcasing science, curiosity, and mind-blowing demos, and started by the legendary Michael Faraday himself. To celebrate, we're unlocking the archive. Every Saturday, we’ll upload a classic lecture to our YouTube channel — some not seen since they aired on TV. Sign up as a Science Supporter and get early access here: https://www.youtube.com/channel/UCYeF244yNGuFefuFKqxIAXw/join -- Taking Lewis Carroll’s twins as his starting point for his second lecture, Professor Eric Laithwaite explores the principles of symmetry in engineering. With some fantastic optical demonstrations, Laithwaite asks whether we going the right way about right and left? -- Professor Eric Laithwaite (1921-97) presents his second televised series of CHRISTMAS LECTURES exploring the world of engineering, titled 'The Engineer Through the Looking Glass'. A sequel to his 1966 series, 'The Engineer in Wonderland', Laithwaite was the first person to present two series of Lectures on national television. His overriding theme running through this series is that "Science is exciting, curiosity its bait". Just as Lewis Caroll’s Alice peered down the rabbit hole and went through the mirror, Laithwaite describes the engineer’s target as the "seemingly impossible". As he states in his programme notes: "There may be no crown at the end for those who step through the glass, as there was for Alice, but if the delight is there, the journey itself is the reward". His six lectures explore the varied work of engineers across gravitation, inertia and electromagnetism, including the controversial fourth Lecture where Laithwaite used the behavioural gyroscopes in an attempt to challenge the validity of Newton’s Laws of motion and the laws of thermodynamics. -- Join this channel to get access to perks: https://www.youtube.com/channel/UCYeF244yNGuFefuFKqxIAXw/join Subscribe for regular science videos: http://bit.ly/RiSubscRibe The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution and TikTok: https://www.tiktok.com/@ri_science Listen to the Ri podcast: https://podcasters.spotify.com/pod/show/ri-science-podcast Donate to the RI and help us bring you more lectures: https://www.rigb.org/support-us/donate-ri Our editorial policy: https://www.rigb.org/editing-ri-talks-and-moderating-comments 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.