How Microwave Lenses REALLY Work!

Refraction, Focusing and Magnification are usually explained because light "slows down" in transparent materials. But DOES it? 3D-printed Microwave Dielectric Lenses are transforming how RF Engineers think about focusing Microwave and mmWave energy. Additive machining has changed the design process forever. Have a look at Phil Moriarty's Sixty Symbols discussion with Brady Haran    • More rambling on Refraction - Sixty Symbols   - it's all about Polaritons... As well as being an amazing application of 3D printing, dielectric materials are fascinating in their own right, so the detail at the molecular level is completely general and applies to any material at radio frequencies and into the far infra-red. This video doesn't use the complex jargon of the original video. The only thing I've held back on is the equations and the detail of the quantum-mechanical processes involved, but I'll probably put that on my second channel ‪@MachiningandMicrowavesPlus‬ along with the piece I was going to include about the weird dielectric behaviour of water with RF fields. Commercial enquiries about Radix™ 3D printable material: https://landing.rogerscorp.com/5/Radi... Fortify, Rogers' 3D printing partner, are at https://3dfortify.com/3d-printed-rf-d... Check out MAGTREX 555 as well, it's another amazing material from Rogers Corporation https://www.rogerscorp.com/advanced-e... BUY ME A COFFEE? https://ko-fi.com/machiningandmicrowaves MY PATREON PAGE:   / machiningandmicrowaves   MS Lattice download: https://github.com/MSLattice/MSLattic... Simple optics bench program: https://phydemo.app/ray-optics/simula... Searchlight image: Royal Air Force official photographer, Miller (P/O), Public domain, via Wikimedia Commons Blackbuck hunt image Unknown artist, Public domain, via Wikimedia Commons c 1775 Ibn Sahl (Abu Sa`d al-`Ala' ibn Sahl) (c. 940-1000), Public domain, via Wikimedia Commons Bag X-Ray: IDuke, CC BY 2.5 https://creativecommons.org/licenses/..., via Wikimedia Commons Spongebob image from wikipedia/en/thumb/3/3b/SpongeBob_SquarePants_character.svg Butterfly: Inorganic chiral 3-D photonic crystals with bicontinuous gyroid structure replicated from butterfly wing scales. Christian Mille, Eric C. Tyrodec and Robert W. Corkery Molview: https://molview.org/?smiles=C(F)(F)(C...[H])(F)C(F)(F)F Sapphire ring: https://geogallery.si.edu/10002687/lo... Spring animation: AlvaroLopez12, CC BY-SA 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons