How to Make Materials That Reflect Optical Properties Differently

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Most natural materials that exist for visible light respond to the electric field of a light wave. Greg says there are in principle materials that could respond to the magnetic part as well. If you can make a material that responds to both the electric and magnetic part, that's the sort of material you need if you want to make something invisible.

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 TikTok

Buy Dr. Gbur’s book, Invisibility: The History and Science of How Not To Be Seen, on Bookshop.org or Amazon

His 2019 book, Falling Felines and Fundamental Physics, is also available on Bookshop.org and Amazon

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