footage Pentagon: UFO vids show trash, drones Rob Beschizza

illusions Trick your brain with this spinning dots optical illusion Popkin

photography 3D print a 164mm f/2.5 lens Rob Beschizza

cameras This incredibly tiny camera is the size of a grain of salt David Pescovitz

optical illusions This "Staircase to Heaven" is actually just a beautiful illusion Carla Sinclair

optical illusions Learn About "Fork-and-Knife Illusion" From A New Scientific Paper Written By A Middle-schooler Thom Dunn

Technology Man invents robotic device to insert contact lenses David Pescovitz

optics Lovely demonstration of the optic part of fiberoptic cable Andrea James

maker The guy standing behind this invisibility shield made a few improvements Andrea James

art This scientific paper about black holes includes a 1:1 image of a black hole John Struan

cameras Adapting a 100-year-old lens to shoot video on a new camera Rob Beschizza

vision How to easily identify your dominant eye David Pescovitz

maker How to make your own camera lens from sand and rocks David Pescovitz

Technology Bronze masks coated in Vantablack produce trippy illusions Andrea James

Science Watch how machine learning can enhance low-light images Andrea James

Science Watch the world's brightest flashlight burn stuff Andrea James

video Weather phenomenon of light pillars vs. northern lights Andrea James