The 3D Printing Revolution For thousands of years, manufacturing has been guided by the same principle. We take a block of material, machine, carve or chisel remove access material from it until we get to the final shape of the product we want to create. It is not much different from a hunter, way back in
Visible Light by National Geographic The human eye and brain work together to convert visible light energy into an electrical impulse that can be interpreted as an image--allowing us to see what we need to see to survive. https://youtu.be/8__9_Shxk1U The original video can be found on the National Geographic website.