The Underground Telescope - Objectivity 232

Brady and Keith look at the fascinating history of an antique lens in the Royal Society's collection. More links below ↓↓↓ Featuring Royal Society Head Librarian Keith Moore speaking with Brady. Objectivity on Patreon:   / objectivity   Subscribe to Objectivity: http://bit.ly/Objectivity_Sub Check out some more Objectivity episodes... Big Old Lenses:    • Big Old Lenses - Objectivity 51   Newton's Principia Manuscript:    • Newton's Principia Manuscript - Objectivit...   Films by James Hennessy and Brady Haran Royal Society website: http://bit.ly/Royal_Society The Royal Society's own YouTube channel:    / royalsociety   Facebook:   / objectivityvideos   Twitter:   / objectivity_vid   Patron thank you page: http://www.bradyharanblog.com/objecti... Objectivity T-Shirts: https://teespring.com/stores/objectivity Some keywords: Telescope, underground, antique, lens, John Flamsteed, principia, first edition, letters, first Astronomer Royal, Martin Rees, Royal Observatory, Greenwich, object glass, refracting, Hevelius, green tint, chipped, label, engraving, Flamsteed, James Hodgson, venetian technique, Jonas Moore, aerial telescope, dome, well telescope, pit, parallax, circle, bricks, panorama,