Invisibility cloaks. Transparent frogs. Stealth bombers. Gorilla mischief. Theoretical optical physicist and Invisible Photologist Dr. Greg Gbur joins Alie to chat about light, illusions, secret technology, science fiction inspiration, terrible camouflage, great movies, historical mishaps, and even a few great household life hacks – and why you should go read a book on your porch. Perhaps his book, Invisibility: The History and Science of How Not To Be Seen. Visit Dr. Greg Gbur’s blogs, Skulls in the Stars and Science Chamber of Horrors, and follow him on Twitter, Mastodon, Instagram and TikTokBuy Dr. Gbur’s book, Invisibility: The History and Science of How Not To Be Seen, on Bookshop.org or AmazonHis 2019 book, Falling Felines and Fundamental Physics, is also available on Bookshop.org and AmazonA donation went to Doctors Without BordersMore episode sources and linksOther episodes you may enjoy: Molecular Neurobiology (BRAIN CHEMICALS), Ophthalmology (EYES), Malacology (SNAILS & SLUGS), Teuthology (SQUIDS), Cosmetology (GLAM/GROOMING), Quantum Ontology (WHAT IS REAL?), Cosmology (THE UNIVERSE) Parts 1 & 2, Plumology (FEATHERS), Medusology (JELLYFISH)Sponsors of OlogiesTranscripts and bleeped episodesSmologies (short, classroom-safe) episodesBecome a patron of Ologies for as little as a buck a monthOlogiesMerch.com has hats, shirts, masks, totes!Follow @Ologies on Twitter and InstagramFollow @AlieWard on Twitter and InstagramEditing by Mercedes Maitland of Maitland Audio Productions and Jarrett Sleeper of MindJam Media and Mark David ChristensonTranscripts by Emily White of The WordaryWebsite by Kelly R. DwyerTheme song by Nick Thorburn