We all learned at school that the Earth is round and that it orbits around the Sun. But there are people who believe that the Earth is flat. And not just that they believe, but they use a powerful zoom of Nikon P900 and P1000 to prove it!
A team at Harvard University have build a lens that’s thinner than the waves of light it focuses. Based on light-warping metamaterials, this lens may one day replace the heavier glass lenses found in items like microscopes, smartphones, cameras and even telescopes.
Lens technology has come a very long way since those early days, but it’s still difficult to build very compact lenses. If you’ve ever wondered why your phone’s camera lens sticks slightly proud of the back, this is why.