Question

What device, used by both a 9th century Arab scientist and a 15th century Italian painter, made it easier to copy three dimensional views onto a flat plane?

Answer 1

The camera obscura.

Step-by-step explanation:

The camera obscura was first invented by the Arab scientist Ibn al-Haytham. This was the first approximation to what we know today as a digital camera.

The camera obscura was a black small box (or a room) with a small hole in one side, that allows light to get through, this projects the image in the outside to one of the walls of the box; hence, a 2D projection of a 3D object.

Around 700 years later, the Italian painter Leonardo Da Vinci also used this device to work on his arts and invested a lot of time into improving its design.