Russian mathematician Victor Veselago predicted that a material with simultaneously negative electric and magnetic polarization responses would yield a negative refractive index (an isotropic refractive index of −1), a ‘left-handed’ medium in which light propagates with opposite phase and energy velocities.
Lens | Lens, Pas-de-Calais | Independent Lens | Nicholas Lens | flat | lens | Fresnel lens | Single-lens reflex camera | Flat Earth | Tortilla Flat | flat racing | Panasonic Lumix 45mm lens | Panasonic Lumix G 14mm lens | Panasonic Lumix 20mm lens | Panasonic Leica DG 25mm lens | M42 lens mount | Lens (optics) | Judith of Lens | Flat Rock, Henderson County, North Carolina | Flat | First Suite in E-flat for Military Band | Digital single-lens reflex camera | Dairy Flat | Ultra wide angle lens | Through-the-lens metering | The World's Number One, Flat-Out, All-Time Great Stock Car Racing Book | The World Is Flat | Suicide in B Flat | run-flat tire | RNZAF Dip Flat |